[FFmpeg-devel] [PATCH v2] Major library version bump

[FFmpeg-devel] [PATCH v2] Major library version bump

[Anton Khirnov]

Hi,
James is on vacation, so I'm continuing his work on the bump, with his
agreement.

The consensus from the previous thread was that we do NOT want any
instability period - this set is pushed all at once and the tree is
considered stable immediately after.

I've integrated all the patches submitted to the previous thread, except
for:
* my fifo patches, which as Andreas pointed out do not actually break
  ABI and thus do not need a bump
* the HDR vivid patches which break the API without a deprecation period

If nobody has further comments, I would like to push this soon.

Thanks,
-- 
Anton Khirnov

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[FFmpeg-devel] [PATCH v2 01/33] avformat/avformat: Remove AVOutputFormat.data_codec

[Anton Khirnov]

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

No AVOutputFormat has this set.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 libavformat/avformat.h  | 1 -
 libavformat/format.c    | 2 --
 libavformat/mux_utils.c | 3 +--
 3 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 1d97d56ac58..53bbc0063f0 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -614,7 +614,6 @@ typedef struct AVOutputFormat {
      * @see avdevice_list_devices() for more details.
      */
     int (*get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list);
-    enum AVCodecID data_codec; /**< default data codec */
     /**
      * Initialize format. May allocate data here, and set any AVFormatContext or
      * AVStream parameters that need to be set before packets are sent.
diff --git a/libavformat/format.c b/libavformat/format.c
index 4b1f3c2986e..76f25ab5a67 100644
--- a/libavformat/format.c
+++ b/libavformat/format.c
@@ -111,8 +111,6 @@ enum AVCodecID av_guess_codec(const AVOutputFormat *fmt, const char *short_name,
         return fmt->audio_codec;
     else if (type == AVMEDIA_TYPE_SUBTITLE)
         return fmt->subtitle_codec;
-    else if (type == AVMEDIA_TYPE_DATA)
-        return fmt->data_codec;
     else
         return AV_CODEC_ID_NONE;
 }
diff --git a/libavformat/mux_utils.c b/libavformat/mux_utils.c
index 764c834fa2c..55e58ae9d68 100644
--- a/libavformat/mux_utils.c
+++ b/libavformat/mux_utils.c
@@ -51,8 +51,7 @@ int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
             return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
         else if (codec_id == ofmt->video_codec ||
                  codec_id == ofmt->audio_codec ||
-                 codec_id == ofmt->subtitle_codec ||
-                 codec_id == ofmt->data_codec)
+                 codec_id == ofmt->subtitle_codec)
             return 1;
     }
     return AVERROR_PATCHWELCOME;
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 02/33] avformat/avformat: Move codecpar up in AVStream

[Anton Khirnov]

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

It is the most commonly used field and moving it to the start
e.g. allows to encode the offset in a pointer+offset addressing
mode on one byte on x86.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 libavformat/avformat.h | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 53bbc0063f0..a69ee1c575c 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -962,6 +962,17 @@ typedef struct AVStream {
      */
     int id;
 
+    /**
+     * Codec parameters associated with this stream. Allocated and freed by
+     * libavformat in avformat_new_stream() and avformat_free_context()
+     * respectively.
+     *
+     * - demuxing: filled by libavformat on stream creation or in
+     *             avformat_find_stream_info()
+     * - muxing: filled by the caller before avformat_write_header()
+     */
+    AVCodecParameters *codecpar;
+
     void *priv_data;
 
     /**
@@ -1097,17 +1108,6 @@ typedef struct AVStream {
      */
     AVRational r_frame_rate;
 
-    /**
-     * Codec parameters associated with this stream. Allocated and freed by
-     * libavformat in avformat_new_stream() and avformat_free_context()
-     * respectively.
-     *
-     * - demuxing: filled by libavformat on stream creation or in
-     *             avformat_find_stream_info()
-     * - muxing: filled by the caller before avformat_write_header()
-     */
-    AVCodecParameters *codecpar;
-
     /**
      * Number of bits in timestamps. Used for wrapping control.
      *
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 03/33] avcodec: Make avcodec_decode_subtitle2 accept a const AVPacket*

[Anton Khirnov]

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 doc/APIchanges            | 3 +++
 fftools/ffmpeg.c          | 4 ++--
 fftools/ffprobe.c         | 2 +-
 libavcodec/avcodec.h      | 3 +--
 libavcodec/decode.c       | 9 ++++-----
 tools/target_dec_fuzzer.c | 4 ++--
 6 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index bc52a079644..b1181ec60a3 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -14,6 +14,9 @@ libavutil:     2021-04-27
 
 API changes, most recent first:
 
+2023-02-xx - xxxxxxxxxx - lavc 60.0.100 - avcodec.h
+  avcodec_decode_subtitle2() now accepts const AVPacket*.
+
 2023-01-29 - xxxxxxxxxx - lavc 59.59.100 - avcodec.h
   Add AV_CODEC_FLAG_COPY_OPAQUE and AV_CODEC_FLAG_FRAME_DURATION.
 
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 92fd61f3158..257f319550c 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -2296,8 +2296,8 @@ fail:
     return err < 0 ? err : ret;
 }
 
-static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
-                               int *decode_failed)
+static int transcode_subtitles(InputStream *ist, const AVPacket *pkt,
+                               int *got_output, int *decode_failed)
 {
     AVSubtitle subtitle;
     int free_sub = 1;
diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
index dfa7ff1b241..5beaece094f 100644
--- a/fftools/ffprobe.c
+++ b/fftools/ffprobe.c
@@ -2733,7 +2733,7 @@ static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
 
 static av_always_inline int process_frame(WriterContext *w,
                                           InputFile *ifile,
-                                          AVFrame *frame, AVPacket *pkt,
+                                          AVFrame *frame, const AVPacket *pkt,
                                           int *packet_new)
 {
     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 90b437ccbe2..b9bd69a2ec7 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2601,8 +2601,7 @@ enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos);
  * @param[in] avpkt The input AVPacket containing the input buffer.
  */
 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
-                            int *got_sub_ptr,
-                            AVPacket *avpkt);
+                             int *got_sub_ptr, const AVPacket *avpkt);
 
 /**
  * Supply raw packet data as input to a decoder.
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 0abc88737b2..45c1f085792 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -780,8 +780,8 @@ static void get_subtitle_defaults(AVSubtitle *sub)
 }
 
 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
-static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt,
-                           AVPacket *inpkt, AVPacket *buf_pkt)
+static int recode_subtitle(AVCodecContext *avctx, const AVPacket **outpkt,
+                           const AVPacket *inpkt, AVPacket *buf_pkt)
 {
 #if CONFIG_ICONV
     iconv_t cd = (iconv_t)-1;
@@ -861,8 +861,7 @@ static int utf8_check(const uint8_t *str)
 }
 
 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
-                             int *got_sub_ptr,
-                             AVPacket *avpkt)
+                             int *got_sub_ptr, const AVPacket *avpkt)
 {
     int ret = 0;
 
@@ -882,7 +881,7 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
 
     if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
         AVCodecInternal *avci = avctx->internal;
-        AVPacket *pkt;
+        const AVPacket *pkt;
 
         ret = recode_subtitle(avctx, &pkt, avpkt, avci->buffer_pkt);
         if (ret < 0)
diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index a20345db5c6..8e89b613c07 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -81,8 +81,8 @@ static const FFCodec *AVCodecInitialize(enum AVCodecID codec_id)
     return ffcodec(res);
 }
 
-static int subtitle_handler(AVCodecContext *avctx, void *frame,
-                            int *got_sub_ptr, AVPacket *avpkt)
+static int subtitle_handler(AVCodecContext *avctx, AVFrame *unused,
+                            int *got_sub_ptr, const AVPacket *avpkt)
 {
     AVSubtitle sub;
     int ret = avcodec_decode_subtitle2(avctx, &sub, got_sub_ptr, avpkt);
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 04/33] avformat/demux: Avoid stack packet when decoding frame

[Anton Khirnov]

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Possible now that avcodec_decode_subtitle2() accepts a const AVPacket*.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 libavformat/demux.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/libavformat/demux.c b/libavformat/demux.c
index 2dfd82a63ca..ba2991750bc 100644
--- a/libavformat/demux.c
+++ b/libavformat/demux.c
@@ -1984,7 +1984,7 @@ static int has_codec_parameters(const AVStream *st, const char **errmsg_ptr)
 
 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
 static int try_decode_frame(AVFormatContext *s, AVStream *st,
-                            const AVPacket *avpkt, AVDictionary **options)
+                            const AVPacket *pkt, AVDictionary **options)
 {
     FFStream *const sti = ffstream(st);
     AVCodecContext *const avctx = sti->avctx;
@@ -1992,9 +1992,9 @@ static int try_decode_frame(AVFormatContext *s, AVStream *st,
     int got_picture = 1, ret = 0;
     AVFrame *frame = av_frame_alloc();
     AVSubtitle subtitle;
-    AVPacket pkt = *avpkt;
     int do_skip_frame = 0;
     enum AVDiscard skip_frame;
+    int pkt_to_send = pkt->size > 0;
 
     if (!frame)
         return AVERROR(ENOMEM);
@@ -2043,7 +2043,7 @@ static int try_decode_frame(AVFormatContext *s, AVStream *st,
         avctx->skip_frame = AVDISCARD_ALL;
     }
 
-    while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
+    while ((pkt_to_send || (!pkt->data && got_picture)) &&
            ret >= 0 &&
            (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
             (!sti->codec_info_nb_frames &&
@@ -2051,11 +2051,11 @@ static int try_decode_frame(AVFormatContext *s, AVStream *st,
         got_picture = 0;
         if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
             avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
-            ret = avcodec_send_packet(avctx, &pkt);
+            ret = avcodec_send_packet(avctx, pkt);
             if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
                 break;
             if (ret >= 0)
-                pkt.size = 0;
+                pkt_to_send = 0;
             ret = avcodec_receive_frame(avctx, frame);
             if (ret >= 0)
                 got_picture = 1;
@@ -2063,11 +2063,11 @@ static int try_decode_frame(AVFormatContext *s, AVStream *st,
                 ret = 0;
         } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
             ret = avcodec_decode_subtitle2(avctx, &subtitle,
-                                           &got_picture, &pkt);
+                                           &got_picture, pkt);
             if (got_picture)
                 avsubtitle_free(&subtitle);
             if (ret >= 0)
-                pkt.size = 0;
+                pkt_to_send = 0;
         }
         if (ret >= 0) {
             if (got_picture)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 05/33] avformat/avformat: Move AVOutputFormat internals out of public header

[Anton Khirnov]

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

This commit does for AVOutputFormat what commit
20f972701806be20a77f808db332d9489343bb78 did for AVCodec:
It adds a new type FFOutputFormat, moves all the internals
of AVOutputFormat to it and adds a now reduced AVOutputFormat
as first member.

This does not affect/improve extensibility of both public
or private fields for muxers (it is still a mess due to lavd).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 configure                        |   8 +-
 libavdevice/alldevices.c         |  31 +-
 libavdevice/alsa_enc.c           |  14 +-
 libavdevice/audiotoolbox.m       |  15 +-
 libavdevice/avdevice.c           |   9 +-
 libavdevice/caca.c               |  15 +-
 libavdevice/decklink_enc_c.c     |  17 +-
 libavdevice/fbdev_enc.c          |  15 +-
 libavdevice/opengl_enc.c         |  14 +-
 libavdevice/oss_enc.c            |  15 +-
 libavdevice/pulse_audio_enc.c    |  14 +-
 libavdevice/sdl2.c               |  15 +-
 libavdevice/sndio_enc.c          |  15 +-
 libavdevice/v4l2enc.c            |  15 +-
 libavdevice/xv.c                 |  14 +-
 libavformat/a64.c                |  11 +-
 libavformat/adtsenc.c            |  19 +-
 libavformat/aiffenc.c            |  19 +-
 libavformat/allformats.c         | 363 +++++++++++------------
 libavformat/alp.c                |  15 +-
 libavformat/amr.c                |  17 +-
 libavformat/amvenc.c             |  15 +-
 libavformat/apm.c                |  13 +-
 libavformat/apngenc.c            |  19 +-
 libavformat/argo_asf.c           |  15 +-
 libavformat/argo_cvg.c           |  15 +-
 libavformat/asfenc.c             |  40 +--
 libavformat/assenc.c             |  17 +-
 libavformat/astenc.c             |  17 +-
 libavformat/au.c                 |  19 +-
 libavformat/avformat.c           |   5 +-
 libavformat/avformat.h           | 109 -------
 libavformat/avienc.c             |  19 +-
 libavformat/bit.c                |  15 +-
 libavformat/cafenc.c             |  16 +-
 libavformat/chromaprint.c        |  13 +-
 libavformat/codec2.c             |  15 +-
 libavformat/crcenc.c             |  13 +-
 libavformat/dashenc.c            |  20 +-
 libavformat/daudenc.c            |  15 +-
 libavformat/dvenc.c              |  12 +-
 libavformat/ffmetaenc.c          |  11 +-
 libavformat/fifo.c               |  10 +-
 libavformat/fifo_test.c          |  11 +-
 libavformat/filmstripenc.c       |  13 +-
 libavformat/fitsenc.c            |  13 +-
 libavformat/flacenc.c            |  19 +-
 libavformat/flvenc.c             |  20 +-
 libavformat/framecrcenc.c        |  13 +-
 libavformat/gif.c                |  19 +-
 libavformat/gxfenc.c             |  12 +-
 libavformat/hashenc.c            |  71 ++---
 libavformat/hdsenc.c             |  14 +-
 libavformat/hlsenc.c             |  18 +-
 libavformat/icoenc.c             |  17 +-
 libavformat/idroqenc.c           |  13 +-
 libavformat/ilbc.c               |  15 +-
 libavformat/img2enc.c            |  25 +-
 libavformat/internal.h           |   3 +-
 libavformat/ircamenc.c           |  15 +-
 libavformat/ivfenc.c             |  14 +-
 libavformat/jacosubenc.c         |  15 +-
 libavformat/kvag.c               |  13 +-
 libavformat/latmenc.c            |  18 +-
 libavformat/lrcenc.c             |  14 +-
 libavformat/matroskaenc.c        |  62 ++--
 libavformat/microdvdenc.c        |  15 +-
 libavformat/mkvtimestamp_v2.c    |  11 +-
 libavformat/mmf.c                |  15 +-
 libavformat/movenc.c             | 170 +++++------
 libavformat/mp3enc.c             |  19 +-
 libavformat/mpegenc.c            |  99 +++----
 libavformat/mpegtsenc.c          |  18 +-
 libavformat/mpjpeg.c             |  19 +-
 libavformat/mux.c                |  77 ++---
 libavformat/mux.h                | 113 +++++++
 libavformat/mux_utils.c          |   4 +-
 libavformat/mxfenc.c             | 120 ++++----
 libavformat/nullenc.c            |  12 +-
 libavformat/nutenc.c             |  20 +-
 libavformat/oggenc.c             |  85 +++---
 libavformat/omaenc.c             |  17 +-
 libavformat/pcmenc.c             |  15 +-
 libavformat/rawenc.c             | 486 +++++++++++++++----------------
 libavformat/rmenc.c              |  17 +-
 libavformat/rsoenc.c             |  17 +-
 libavformat/rtpenc.c             |  15 +-
 libavformat/rtpenc_mpegts.c      |  13 +-
 libavformat/rtspenc.c            |  14 +-
 libavformat/sapenc.c             |  12 +-
 libavformat/sccenc.c             |  13 +-
 libavformat/segafilmenc.c        |  12 +-
 libavformat/segment.c            |  29 +-
 libavformat/smjpegenc.c          |  14 +-
 libavformat/smoothstreamingenc.c |  14 +-
 libavformat/soxenc.c             |  15 +-
 libavformat/spdifenc.c           |  17 +-
 libavformat/srtenc.c             |  15 +-
 libavformat/supenc.c             |  15 +-
 libavformat/swfenc.c             |  31 +-
 libavformat/tee.c                |  10 +-
 libavformat/ttaenc.c             |  15 +-
 libavformat/ttmlenc.c            |  15 +-
 libavformat/uncodedframecrcenc.c |  14 +-
 libavformat/vc1testenc.c         |  13 +-
 libavformat/vocenc.c             |  19 +-
 libavformat/wavenc.c             |  37 +--
 libavformat/webm_chunk.c         |  14 +-
 libavformat/webmdashenc.c        |  13 +-
 libavformat/webpenc.c            |  15 +-
 libavformat/webvttenc.c          |  15 +-
 libavformat/westwood_audenc.c    |  13 +-
 libavformat/wtvenc.c             |  14 +-
 libavformat/wvenc.c              |  17 +-
 libavformat/yuv4mpegenc.c        |  13 +-
 115 files changed, 1731 insertions(+), 1644 deletions(-)

diff --git a/configure b/configure
index 47790d10f57..ceb563310f3 100755
--- a/configure
+++ b/configure
@@ -4008,9 +4008,9 @@ find_filters_extern(){
 }
 
 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
-OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
+OUTDEV_LIST=$(find_things_extern muxer FFOutputFormat libavdevice/alldevices.c outdev)
 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
-MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
+MUXER_LIST=$(find_things_extern muxer FFOutputFormat libavformat/allformats.c)
 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
 ENCODER_LIST=$(find_things_extern encoder FFCodec libavcodec/allcodecs.c)
 DECODER_LIST=$(find_things_extern decoder FFCodec libavcodec/allcodecs.c)
@@ -7956,9 +7956,9 @@ print_enabled_components libavcodec/codec_list.c FFCodec codec_list $CODEC_LIST
 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
 print_enabled_components libavcodec/bsf_list.c FFBitStreamFilter bitstream_filters $BSF_LIST
 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
-print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
+print_enabled_components libavformat/muxer_list.c FFOutputFormat muxer_list $MUXER_LIST
 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
-print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
+print_enabled_components libavdevice/outdev_list.c FFOutputFormat outdev_list $OUTDEV_LIST
 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
 
 # Settings for pkg-config files
diff --git a/libavdevice/alldevices.c b/libavdevice/alldevices.c
index 22323a0a44a..8a90fcb5d78 100644
--- a/libavdevice/alldevices.c
+++ b/libavdevice/alldevices.c
@@ -19,40 +19,41 @@
  */
 
 #include "libavformat/internal.h"
+#include "libavformat/mux.h"
 #include "avdevice.h"
 
 /* devices */
 extern const AVInputFormat  ff_alsa_demuxer;
-extern const AVOutputFormat ff_alsa_muxer;
+extern const FFOutputFormat ff_alsa_muxer;
 extern const AVInputFormat  ff_android_camera_demuxer;
-extern const AVOutputFormat ff_audiotoolbox_muxer;
+extern const FFOutputFormat ff_audiotoolbox_muxer;
 extern const AVInputFormat  ff_avfoundation_demuxer;
 extern const AVInputFormat  ff_bktr_demuxer;
-extern const AVOutputFormat ff_caca_muxer;
+extern const FFOutputFormat ff_caca_muxer;
 extern const AVInputFormat  ff_decklink_demuxer;
-extern const AVOutputFormat ff_decklink_muxer;
+extern const FFOutputFormat ff_decklink_muxer;
 extern const AVInputFormat  ff_dshow_demuxer;
 extern const AVInputFormat  ff_fbdev_demuxer;
-extern const AVOutputFormat ff_fbdev_muxer;
+extern const FFOutputFormat ff_fbdev_muxer;
 extern const AVInputFormat  ff_gdigrab_demuxer;
 extern const AVInputFormat  ff_iec61883_demuxer;
 extern const AVInputFormat  ff_jack_demuxer;
 extern const AVInputFormat  ff_kmsgrab_demuxer;
 extern const AVInputFormat  ff_lavfi_demuxer;
 extern const AVInputFormat  ff_openal_demuxer;
-extern const AVOutputFormat ff_opengl_muxer;
+extern const FFOutputFormat ff_opengl_muxer;
 extern const AVInputFormat  ff_oss_demuxer;
-extern const AVOutputFormat ff_oss_muxer;
+extern const FFOutputFormat ff_oss_muxer;
 extern const AVInputFormat  ff_pulse_demuxer;
-extern const AVOutputFormat ff_pulse_muxer;
-extern const AVOutputFormat ff_sdl2_muxer;
+extern const FFOutputFormat ff_pulse_muxer;
+extern const FFOutputFormat ff_sdl2_muxer;
 extern const AVInputFormat  ff_sndio_demuxer;
-extern const AVOutputFormat ff_sndio_muxer;
+extern const FFOutputFormat ff_sndio_muxer;
 extern const AVInputFormat  ff_v4l2_demuxer;
-extern const AVOutputFormat ff_v4l2_muxer;
+extern const FFOutputFormat ff_v4l2_muxer;
 extern const AVInputFormat  ff_vfwcap_demuxer;
 extern const AVInputFormat  ff_xcbgrab_demuxer;
-extern const AVOutputFormat ff_xv_muxer;
+extern const FFOutputFormat ff_xv_muxer;
 
 /* external libraries */
 extern const AVInputFormat  ff_libcdio_demuxer;
@@ -97,12 +98,12 @@ static const void *next_output(const AVOutputFormat *prev, AVClassCategory c2)
     const AVClass *pc;
     const AVClassCategory c1 = AV_CLASS_CATEGORY_DEVICE_OUTPUT;
     AVClassCategory category = AV_CLASS_CATEGORY_NA;
-    const AVOutputFormat *fmt = NULL;
+    const FFOutputFormat *fmt = NULL;
     int i = 0;
 
     while (prev && (fmt = outdev_list[i])) {
         i++;
-        if (prev == fmt)
+        if (prev == &fmt->p)
             break;
     }
 
@@ -110,7 +111,7 @@ static const void *next_output(const AVOutputFormat *prev, AVClassCategory c2)
         fmt = outdev_list[i++];
         if (!fmt)
             break;
-        pc = fmt->priv_class;
+        pc = fmt->p.priv_class;
         if (!pc)
             continue;
         category = pc->category;
diff --git a/libavdevice/alsa_enc.c b/libavdevice/alsa_enc.c
index e461829d03b..62a20c7ba48 100644
--- a/libavdevice/alsa_enc.c
+++ b/libavdevice/alsa_enc.c
@@ -165,18 +165,18 @@ static const AVClass alsa_muxer_class = {
     .category       = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
 };
 
-const AVOutputFormat ff_alsa_muxer = {
-    .name           = "alsa",
-    .long_name      = NULL_IF_CONFIG_SMALL("ALSA audio output"),
+const FFOutputFormat ff_alsa_muxer = {
+    .p.name         = "alsa",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("ALSA audio output"),
     .priv_data_size = sizeof(AlsaData),
-    .audio_codec    = DEFAULT_CODEC_ID,
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = DEFAULT_CODEC_ID,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = audio_write_header,
     .write_packet   = audio_write_packet,
     .write_trailer  = ff_alsa_close,
     .write_uncoded_frame = audio_write_frame,
     .get_device_list = audio_get_device_list,
     .get_output_timestamp = audio_get_output_timestamp,
-    .flags          = AVFMT_NOFILE,
-    .priv_class     = &alsa_muxer_class,
+    .p.flags        = AVFMT_NOFILE,
+    .p.priv_class   = &alsa_muxer_class,
 };
diff --git a/libavdevice/audiotoolbox.m b/libavdevice/audiotoolbox.m
index 27a1fd4a78c..aa49e2c992a 100644
--- a/libavdevice/audiotoolbox.m
+++ b/libavdevice/audiotoolbox.m
@@ -30,6 +30,7 @@
 
 #include "libavutil/opt.h"
 #include "libavformat/internal.h"
+#include "libavformat/mux.h"
 #include "libavutil/internal.h"
 #include "avdevice.h"
 
@@ -294,15 +295,15 @@ static const AVClass at_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
 };
 
-const AVOutputFormat ff_audiotoolbox_muxer = {
-    .name           = "audiotoolbox",
-    .long_name      = NULL_IF_CONFIG_SMALL("AudioToolbox output device"),
+const FFOutputFormat ff_audiotoolbox_muxer = {
+    .p.name         = "audiotoolbox",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("AudioToolbox output device"),
     .priv_data_size = sizeof(ATContext),
-    .audio_codec    = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = at_write_header,
     .write_packet   = at_write_packet,
     .write_trailer  = at_write_trailer,
-    .flags          = AVFMT_NOFILE,
-    .priv_class     = &at_class,
+    .p.flags        = AVFMT_NOFILE,
+    .p.priv_class   = &at_class,
 };
diff --git a/libavdevice/avdevice.c b/libavdevice/avdevice.c
index 58996404b3b..b47f89c4bf2 100644
--- a/libavdevice/avdevice.c
+++ b/libavdevice/avdevice.c
@@ -19,6 +19,7 @@
 #include "libavutil/avassert.h"
 #include "avdevice.h"
 #include "internal.h"
+#include "libavformat/mux.h"
 
 #if FF_API_DEVICE_CAPABILITIES
 const AVOption av_device_capabilities[] = {
@@ -29,9 +30,9 @@ const AVOption av_device_capabilities[] = {
 int avdevice_app_to_dev_control_message(struct AVFormatContext *s, enum AVAppToDevMessageType type,
                                         void *data, size_t data_size)
 {
-    if (!s->oformat || !s->oformat->control_message)
+    if (!s->oformat || !ffofmt(s->oformat)->control_message)
         return AVERROR(ENOSYS);
-    return s->oformat->control_message(s, type, data, data_size);
+    return ffofmt(s->oformat)->control_message(s, type, data, data_size);
 }
 
 int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToAppMessageType type,
@@ -61,7 +62,7 @@ int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list)
     av_assert0(s);
     av_assert0(device_list);
     av_assert0(s->oformat || s->iformat);
-    if ((s->oformat && !s->oformat->get_device_list) ||
+    if ((s->oformat && !ffofmt(s->oformat)->get_device_list) ||
         (s->iformat && !s->iformat->get_device_list)) {
         *device_list = NULL;
         return AVERROR(ENOSYS);
@@ -72,7 +73,7 @@ int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list)
     /* no default device by default */
     (*device_list)->default_device = -1;
     if (s->oformat)
-        ret = s->oformat->get_device_list(s, *device_list);
+        ret = ffofmt(s->oformat)->get_device_list(s, *device_list);
     else
         ret = s->iformat->get_device_list(s, *device_list);
     if (ret < 0) {
diff --git a/libavdevice/caca.c b/libavdevice/caca.c
index 5536fd036ed..6af1649137e 100644
--- a/libavdevice/caca.c
+++ b/libavdevice/caca.c
@@ -21,6 +21,7 @@
 #include <caca.h>
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
+#include "libavformat/mux.h"
 #include "avdevice.h"
 
 typedef struct CACAContext {
@@ -220,15 +221,15 @@ static const AVClass caca_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_caca_muxer = {
-    .name           = "caca",
-    .long_name      = NULL_IF_CONFIG_SMALL("caca (color ASCII art) output device"),
+const FFOutputFormat ff_caca_muxer = {
+    .p.name         = "caca",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("caca (color ASCII art) output device"),
     .priv_data_size = sizeof(CACAContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_RAWVIDEO,
     .write_header   = caca_write_header,
     .write_packet   = caca_write_packet,
     .deinit         = caca_deinit,
-    .flags          = AVFMT_NOFILE,
-    .priv_class     = &caca_class,
+    .p.flags        = AVFMT_NOFILE,
+    .p.priv_class   = &caca_class,
 };
diff --git a/libavdevice/decklink_enc_c.c b/libavdevice/decklink_enc_c.c
index 990fbb81684..f7e315057fc 100644
--- a/libavdevice/decklink_enc_c.c
+++ b/libavdevice/decklink_enc_c.c
@@ -20,6 +20,7 @@
  */
 
 #include "libavformat/avformat.h"
+#include "libavformat/mux.h"
 #include "libavutil/opt.h"
 
 #include "decklink_common_c.h"
@@ -71,15 +72,15 @@ static const AVClass decklink_muxer_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_decklink_muxer = {
-    .name           = "decklink",
-    .long_name      = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
-    .audio_codec    = AV_CODEC_ID_PCM_S16LE,
-    .video_codec    = AV_CODEC_ID_WRAPPED_AVFRAME,
-    .subtitle_codec = AV_CODEC_ID_NONE,
-    .flags          = AVFMT_NOFILE,
+const FFOutputFormat ff_decklink_muxer = {
+    .p.name           = "decklink",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
+    .p.audio_codec    = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec    = AV_CODEC_ID_WRAPPED_AVFRAME,
+    .p.subtitle_codec = AV_CODEC_ID_NONE,
+    .p.flags          = AVFMT_NOFILE,
+    .p.priv_class     = &decklink_muxer_class,
     .get_device_list = ff_decklink_list_output_devices,
-    .priv_class     = &decklink_muxer_class,
     .priv_data_size = sizeof(struct decklink_cctx),
     .write_header   = ff_decklink_write_header,
     .write_packet   = ff_decklink_write_packet,
diff --git a/libavdevice/fbdev_enc.c b/libavdevice/fbdev_enc.c
index 77233880e7d..7f3e8e5935f 100644
--- a/libavdevice/fbdev_enc.c
+++ b/libavdevice/fbdev_enc.c
@@ -28,6 +28,7 @@
 #include "libavutil/log.h"
 #include "libavutil/opt.h"
 #include "libavformat/avformat.h"
+#include "libavformat/mux.h"
 #include "fbdev_common.h"
 #include "avdevice.h"
 
@@ -206,16 +207,16 @@ static const AVClass fbdev_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_fbdev_muxer = {
-    .name           = "fbdev",
-    .long_name      = NULL_IF_CONFIG_SMALL("Linux framebuffer"),
+const FFOutputFormat ff_fbdev_muxer = {
+    .p.name         = "fbdev",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Linux framebuffer"),
     .priv_data_size = sizeof(FBDevContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_RAWVIDEO,
     .write_header   = fbdev_write_header,
     .write_packet   = fbdev_write_packet,
     .write_trailer  = fbdev_write_trailer,
     .get_device_list = fbdev_get_device_list,
-    .flags          = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
-    .priv_class     = &fbdev_class,
+    .p.flags        = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
+    .p.priv_class   = &fbdev_class,
 };
diff --git a/libavdevice/opengl_enc.c b/libavdevice/opengl_enc.c
index b2140c80be5..06750bbba1e 100644
--- a/libavdevice/opengl_enc.c
+++ b/libavdevice/opengl_enc.c
@@ -1292,17 +1292,17 @@ static const AVClass opengl_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_opengl_muxer = {
-    .name           = "opengl",
-    .long_name      = NULL_IF_CONFIG_SMALL("OpenGL output"),
+const FFOutputFormat ff_opengl_muxer = {
+    .p.name              = "opengl",
+    .p.long_name         = NULL_IF_CONFIG_SMALL("OpenGL output"),
+    .p.audio_codec       = AV_CODEC_ID_NONE,
+    .p.video_codec       = AV_CODEC_ID_WRAPPED_AVFRAME,
+    .p.flags             = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
+    .p.priv_class        = &opengl_class,
     .priv_data_size = sizeof(OpenGLContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_WRAPPED_AVFRAME,
     .write_header   = opengl_write_header,
     .write_packet   = opengl_write_packet,
     .write_uncoded_frame = opengl_write_frame,
     .write_trailer  = opengl_write_trailer,
     .control_message = opengl_control_message,
-    .flags          = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
-    .priv_class     = &opengl_class,
 };
diff --git a/libavdevice/oss_enc.c b/libavdevice/oss_enc.c
index 704f434c53a..c125e6c0e9f 100644
--- a/libavdevice/oss_enc.c
+++ b/libavdevice/oss_enc.c
@@ -32,6 +32,7 @@
 
 #include "avdevice.h"
 #include "libavformat/internal.h"
+#include "libavformat/mux.h"
 
 #include "oss.h"
 
@@ -94,18 +95,18 @@ static const AVClass oss_muxer_class = {
     .category       = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
 };
 
-const AVOutputFormat ff_oss_muxer = {
-    .name           = "oss",
-    .long_name      = NULL_IF_CONFIG_SMALL("OSS (Open Sound System) playback"),
+const FFOutputFormat ff_oss_muxer = {
+    .p.name         = "oss",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("OSS (Open Sound System) playback"),
     .priv_data_size = sizeof(OSSAudioData),
     /* XXX: we make the assumption that the soundcard accepts this format */
     /* XXX: find better solution with "preinit" method, needed also in
        other formats */
-    .audio_codec    = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = audio_write_header,
     .write_packet   = audio_write_packet,
     .write_trailer  = audio_write_trailer,
-    .flags          = AVFMT_NOFILE,
-    .priv_class     = &oss_muxer_class,
+    .p.flags        = AVFMT_NOFILE,
+    .p.priv_class   = &oss_muxer_class,
 };
diff --git a/libavdevice/pulse_audio_enc.c b/libavdevice/pulse_audio_enc.c
index 038401c680c..3d8323233f7 100644
--- a/libavdevice/pulse_audio_enc.c
+++ b/libavdevice/pulse_audio_enc.c
@@ -788,12 +788,12 @@ static const AVClass pulse_muxer_class = {
     .category       = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
 };
 
-const AVOutputFormat ff_pulse_muxer = {
-    .name                 = "pulse",
-    .long_name            = NULL_IF_CONFIG_SMALL("Pulse audio output"),
+const FFOutputFormat ff_pulse_muxer = {
+    .p.name               = "pulse",
+    .p.long_name          = NULL_IF_CONFIG_SMALL("Pulse audio output"),
     .priv_data_size       = sizeof(PulseData),
-    .audio_codec          = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
-    .video_codec          = AV_CODEC_ID_NONE,
+    .p.audio_codec        = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
+    .p.video_codec        = AV_CODEC_ID_NONE,
     .write_header         = pulse_write_header,
     .write_packet         = pulse_write_packet,
     .write_uncoded_frame  = pulse_write_frame,
@@ -801,6 +801,6 @@ const AVOutputFormat ff_pulse_muxer = {
     .get_output_timestamp = pulse_get_output_timestamp,
     .get_device_list      = pulse_get_device_list,
     .control_message      = pulse_control_message,
-    .flags                = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
-    .priv_class           = &pulse_muxer_class,
+    .p.flags              = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
+    .p.priv_class         = &pulse_muxer_class,
 };
diff --git a/libavdevice/sdl2.c b/libavdevice/sdl2.c
index a9023153f13..342a253dc09 100644
--- a/libavdevice/sdl2.c
+++ b/libavdevice/sdl2.c
@@ -33,6 +33,7 @@
 #include "libavutil/pixdesc.h"
 #include "libavutil/time.h"
 #include "avdevice.h"
+#include "libavformat/mux.h"
 
 typedef struct {
     AVClass *class;
@@ -355,15 +356,15 @@ static const AVClass sdl2_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_sdl2_muxer = {
-    .name           = "sdl,sdl2",
-    .long_name      = NULL_IF_CONFIG_SMALL("SDL2 output device"),
+const FFOutputFormat ff_sdl2_muxer = {
+    .p.name         = "sdl,sdl2",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("SDL2 output device"),
     .priv_data_size = sizeof(SDLContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_RAWVIDEO,
     .write_header   = sdl2_write_header,
     .write_packet   = sdl2_write_packet,
     .write_trailer  = sdl2_write_trailer,
-    .flags          = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
-    .priv_class     = &sdl2_class,
+    .p.flags        = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
+    .p.priv_class   = &sdl2_class,
 };
diff --git a/libavdevice/sndio_enc.c b/libavdevice/sndio_enc.c
index 0cf58fdc6ab..578e287a41f 100644
--- a/libavdevice/sndio_enc.c
+++ b/libavdevice/sndio_enc.c
@@ -24,6 +24,7 @@
 
 #include "libavutil/internal.h"
 
+#include "libavformat/mux.h"
 
 #include "libavdevice/avdevice.h"
 #include "libavdevice/sndio.h"
@@ -86,18 +87,18 @@ static const AVClass sndio_muxer_class = {
     .category       = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
 };
 
-const AVOutputFormat ff_sndio_muxer = {
-    .name           = "sndio",
-    .long_name      = NULL_IF_CONFIG_SMALL("sndio audio playback"),
+const FFOutputFormat ff_sndio_muxer = {
+    .p.name         = "sndio",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("sndio audio playback"),
     .priv_data_size = sizeof(SndioData),
     /* XXX: we make the assumption that the soundcard accepts this format */
     /* XXX: find better solution with "preinit" method, needed also in
        other formats */
-    .audio_codec    = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = audio_write_header,
     .write_packet   = audio_write_packet,
     .write_trailer  = audio_write_trailer,
-    .flags          = AVFMT_NOFILE,
-    .priv_class     = &sndio_muxer_class,
+    .p.flags        = AVFMT_NOFILE,
+    .p.priv_class   = &sndio_muxer_class,
 };
diff --git a/libavdevice/v4l2enc.c b/libavdevice/v4l2enc.c
index b1006461b7a..8e8f911996c 100644
--- a/libavdevice/v4l2enc.c
+++ b/libavdevice/v4l2enc.c
@@ -21,6 +21,7 @@
 #include "libavutil/imgutils.h"
 #include "libavutil/pixdesc.h"
 #include "libavformat/avformat.h"
+#include "libavformat/mux.h"
 #include "v4l2-common.h"
 
 typedef struct {
@@ -111,15 +112,15 @@ static const AVClass v4l2_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_v4l2_muxer = {
-    .name           = "video4linux2,v4l2",
-    .long_name      = NULL_IF_CONFIG_SMALL("Video4Linux2 output device"),
+const FFOutputFormat ff_v4l2_muxer = {
+    .p.name         = "video4linux2,v4l2",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Video4Linux2 output device"),
     .priv_data_size = sizeof(V4L2Context),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_RAWVIDEO,
     .write_header   = write_header,
     .write_packet   = write_packet,
     .write_trailer  = write_trailer,
-    .flags          = AVFMT_NOFILE,
-    .priv_class     = &v4l2_class,
+    .p.flags        = AVFMT_NOFILE,
+    .p.priv_class   = &v4l2_class,
 };
diff --git a/libavdevice/xv.c b/libavdevice/xv.c
index 348c289beae..441f8541218 100644
--- a/libavdevice/xv.c
+++ b/libavdevice/xv.c
@@ -376,17 +376,17 @@ static const AVClass xv_class = {
     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
 };
 
-const AVOutputFormat ff_xv_muxer = {
-    .name           = "xv",
-    .long_name      = NULL_IF_CONFIG_SMALL("XV (XVideo) output device"),
+const FFOutputFormat ff_xv_muxer = {
+    .p.name         = "xv",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("XV (XVideo) output device"),
+    .p.audio_codec   = AV_CODEC_ID_NONE,
+    .p.video_codec   = AV_CODEC_ID_WRAPPED_AVFRAME,
+    .p.flags         = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
+    .p.priv_class    = &xv_class,
     .priv_data_size = sizeof(XVContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_WRAPPED_AVFRAME,
     .write_header   = xv_write_header,
     .write_packet   = xv_write_packet,
     .write_uncoded_frame = xv_write_frame,
     .write_trailer  = xv_write_trailer,
     .control_message = xv_control_message,
-    .flags          = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
-    .priv_class     = &xv_class,
 };
diff --git a/libavformat/a64.c b/libavformat/a64.c
index a66f2542b7e..23b20fc8b79 100644
--- a/libavformat/a64.c
+++ b/libavformat/a64.c
@@ -23,6 +23,7 @@
 #include "libavcodec/codec_id.h"
 #include "libavcodec/codec_par.h"
 #include "avformat.h"
+#include "mux.h"
 #include "rawenc.h"
 
 static int a64_write_header(AVFormatContext *s)
@@ -59,11 +60,11 @@ static int a64_write_header(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_a64_muxer = {
-    .name           = "a64",
-    .long_name      = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
-    .extensions     = "a64, A64",
-    .video_codec    = AV_CODEC_ID_A64_MULTI,
+const FFOutputFormat ff_a64_muxer = {
+    .p.name         = "a64",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
+    .p.extensions   = "a64, A64",
+    .p.video_codec  = AV_CODEC_ID_A64_MULTI,
     .write_header   = a64_write_header,
     .write_packet   = ff_raw_write_packet,
 };
diff --git a/libavformat/adtsenc.c b/libavformat/adtsenc.c
index 5f2461cc6c6..b5e9640544b 100644
--- a/libavformat/adtsenc.c
+++ b/libavformat/adtsenc.c
@@ -31,6 +31,7 @@
 #include "avformat.h"
 #include "apetag.h"
 #include "id3v2.h"
+#include "mux.h"
 
 #define ADTS_HEADER_SIZE 7
 
@@ -232,18 +233,18 @@ static const AVClass adts_muxer_class = {
     .version        = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_adts_muxer = {
-    .name              = "adts",
-    .long_name         = NULL_IF_CONFIG_SMALL("ADTS AAC (Advanced Audio Coding)"),
-    .mime_type         = "audio/aac",
-    .extensions        = "aac,adts",
+const FFOutputFormat ff_adts_muxer = {
+    .p.name            = "adts",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("ADTS AAC (Advanced Audio Coding)"),
+    .p.mime_type       = "audio/aac",
+    .p.extensions      = "aac,adts",
     .priv_data_size    = sizeof(ADTSContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = adts_init,
     .write_header      = adts_write_header,
     .write_packet      = adts_write_packet,
     .write_trailer     = adts_write_trailer,
-    .priv_class        = &adts_muxer_class,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.priv_class      = &adts_muxer_class,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/aiffenc.c b/libavformat/aiffenc.c
index bdaf5c2c3e4..11a5b18d573 100644
--- a/libavformat/aiffenc.c
+++ b/libavformat/aiffenc.c
@@ -30,6 +30,7 @@
 #include "avio_internal.h"
 #include "isom.h"
 #include "id3v2.h"
+#include "mux.h"
 
 typedef struct AIFFOutputContext {
     const AVClass *class;
@@ -284,18 +285,18 @@ static const AVClass aiff_muxer_class = {
     .version        = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_aiff_muxer = {
-    .name              = "aiff",
-    .long_name         = NULL_IF_CONFIG_SMALL("Audio IFF"),
-    .mime_type         = "audio/aiff",
-    .extensions        = "aif,aiff,afc,aifc",
+const FFOutputFormat ff_aiff_muxer = {
+    .p.name            = "aiff",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Audio IFF"),
+    .p.mime_type       = "audio/aiff",
+    .p.extensions      = "aif,aiff,afc,aifc",
     .priv_data_size    = sizeof(AIFFOutputContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16BE,
-    .video_codec       = AV_CODEC_ID_PNG,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16BE,
+    .p.video_codec     = AV_CODEC_ID_PNG,
     .write_header      = aiff_write_header,
     .write_packet      = aiff_write_packet,
     .write_trailer     = aiff_write_trailer,
     .deinit            = aiff_deinit,
-    .codec_tag         = ff_aiff_codec_tags_list,
-    .priv_class        = &aiff_muxer_class,
+    .p.codec_tag       = ff_aiff_codec_tags_list,
+    .p.priv_class      = &aiff_muxer_class,
 };
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 2d31956fd57..54ecf82a043 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -25,82 +25,83 @@
 
 #include "libavformat/internal.h"
 #include "avformat.h"
+#include "mux.h"
 
 /* (de)muxers */
-extern const AVOutputFormat ff_a64_muxer;
+extern const FFOutputFormat ff_a64_muxer;
 extern const AVInputFormat  ff_aa_demuxer;
 extern const AVInputFormat  ff_aac_demuxer;
 extern const AVInputFormat  ff_aax_demuxer;
 extern const AVInputFormat  ff_ac3_demuxer;
-extern const AVOutputFormat ff_ac3_muxer;
+extern const FFOutputFormat ff_ac3_muxer;
 extern const AVInputFormat  ff_ace_demuxer;
 extern const AVInputFormat  ff_acm_demuxer;
 extern const AVInputFormat  ff_act_demuxer;
 extern const AVInputFormat  ff_adf_demuxer;
 extern const AVInputFormat  ff_adp_demuxer;
 extern const AVInputFormat  ff_ads_demuxer;
-extern const AVOutputFormat ff_adts_muxer;
+extern const FFOutputFormat ff_adts_muxer;
 extern const AVInputFormat  ff_adx_demuxer;
-extern const AVOutputFormat ff_adx_muxer;
+extern const FFOutputFormat ff_adx_muxer;
 extern const AVInputFormat  ff_aea_demuxer;
 extern const AVInputFormat  ff_afc_demuxer;
 extern const AVInputFormat  ff_aiff_demuxer;
-extern const AVOutputFormat ff_aiff_muxer;
+extern const FFOutputFormat ff_aiff_muxer;
 extern const AVInputFormat  ff_aix_demuxer;
 extern const AVInputFormat  ff_alp_demuxer;
-extern const AVOutputFormat ff_alp_muxer;
+extern const FFOutputFormat ff_alp_muxer;
 extern const AVInputFormat  ff_amr_demuxer;
-extern const AVOutputFormat ff_amr_muxer;
+extern const FFOutputFormat ff_amr_muxer;
 extern const AVInputFormat  ff_amrnb_demuxer;
 extern const AVInputFormat  ff_amrwb_demuxer;
-extern const AVOutputFormat ff_amv_muxer;
+extern const FFOutputFormat ff_amv_muxer;
 extern const AVInputFormat  ff_anm_demuxer;
 extern const AVInputFormat  ff_apac_demuxer;
 extern const AVInputFormat  ff_apc_demuxer;
 extern const AVInputFormat  ff_ape_demuxer;
 extern const AVInputFormat  ff_apm_demuxer;
-extern const AVOutputFormat ff_apm_muxer;
+extern const FFOutputFormat ff_apm_muxer;
 extern const AVInputFormat  ff_apng_demuxer;
-extern const AVOutputFormat ff_apng_muxer;
+extern const FFOutputFormat ff_apng_muxer;
 extern const AVInputFormat  ff_aptx_demuxer;
-extern const AVOutputFormat ff_aptx_muxer;
+extern const FFOutputFormat ff_aptx_muxer;
 extern const AVInputFormat  ff_aptx_hd_demuxer;
-extern const AVOutputFormat ff_aptx_hd_muxer;
+extern const FFOutputFormat ff_aptx_hd_muxer;
 extern const AVInputFormat  ff_aqtitle_demuxer;
 extern const AVInputFormat  ff_argo_asf_demuxer;
-extern const AVOutputFormat ff_argo_asf_muxer;
+extern const FFOutputFormat ff_argo_asf_muxer;
 extern const AVInputFormat  ff_argo_brp_demuxer;
 extern const AVInputFormat  ff_argo_cvg_demuxer;
-extern const AVOutputFormat ff_argo_cvg_muxer;
+extern const FFOutputFormat ff_argo_cvg_muxer;
 extern const AVInputFormat  ff_asf_demuxer;
-extern const AVOutputFormat ff_asf_muxer;
+extern const FFOutputFormat ff_asf_muxer;
 extern const AVInputFormat  ff_asf_o_demuxer;
 extern const AVInputFormat  ff_ass_demuxer;
-extern const AVOutputFormat ff_ass_muxer;
+extern const FFOutputFormat ff_ass_muxer;
 extern const AVInputFormat  ff_ast_demuxer;
-extern const AVOutputFormat ff_ast_muxer;
-extern const AVOutputFormat ff_asf_stream_muxer;
+extern const FFOutputFormat ff_ast_muxer;
+extern const FFOutputFormat ff_asf_stream_muxer;
 extern const AVInputFormat  ff_au_demuxer;
-extern const AVOutputFormat ff_au_muxer;
+extern const FFOutputFormat ff_au_muxer;
 extern const AVInputFormat  ff_av1_demuxer;
 extern const AVInputFormat  ff_avi_demuxer;
-extern const AVOutputFormat ff_avi_muxer;
-extern const AVOutputFormat ff_avif_muxer;
+extern const FFOutputFormat ff_avi_muxer;
+extern const FFOutputFormat ff_avif_muxer;
 extern const AVInputFormat  ff_avisynth_demuxer;
-extern const AVOutputFormat ff_avm2_muxer;
+extern const FFOutputFormat ff_avm2_muxer;
 extern const AVInputFormat  ff_avr_demuxer;
 extern const AVInputFormat  ff_avs_demuxer;
 extern const AVInputFormat  ff_avs2_demuxer;
-extern const AVOutputFormat ff_avs2_muxer;
+extern const FFOutputFormat ff_avs2_muxer;
 extern const AVInputFormat  ff_avs3_demuxer;
-extern const AVOutputFormat ff_avs3_muxer;
+extern const FFOutputFormat ff_avs3_muxer;
 extern const AVInputFormat  ff_bethsoftvid_demuxer;
 extern const AVInputFormat  ff_bfi_demuxer;
 extern const AVInputFormat  ff_bintext_demuxer;
 extern const AVInputFormat  ff_bink_demuxer;
 extern const AVInputFormat  ff_binka_demuxer;
 extern const AVInputFormat  ff_bit_demuxer;
-extern const AVOutputFormat ff_bit_muxer;
+extern const FFOutputFormat ff_bit_muxer;
 extern const AVInputFormat  ff_bitpacked_demuxer;
 extern const AVInputFormat  ff_bmv_demuxer;
 extern const AVInputFormat  ff_bfstm_demuxer;
@@ -109,190 +110,190 @@ extern const AVInputFormat  ff_boa_demuxer;
 extern const AVInputFormat  ff_bonk_demuxer;
 extern const AVInputFormat  ff_c93_demuxer;
 extern const AVInputFormat  ff_caf_demuxer;
-extern const AVOutputFormat ff_caf_muxer;
+extern const FFOutputFormat ff_caf_muxer;
 extern const AVInputFormat  ff_cavsvideo_demuxer;
-extern const AVOutputFormat ff_cavsvideo_muxer;
+extern const FFOutputFormat ff_cavsvideo_muxer;
 extern const AVInputFormat  ff_cdg_demuxer;
 extern const AVInputFormat  ff_cdxl_demuxer;
 extern const AVInputFormat  ff_cine_demuxer;
 extern const AVInputFormat  ff_codec2_demuxer;
-extern const AVOutputFormat ff_codec2_muxer;
+extern const FFOutputFormat ff_codec2_muxer;
 extern const AVInputFormat  ff_codec2raw_demuxer;
-extern const AVOutputFormat ff_codec2raw_muxer;
+extern const FFOutputFormat ff_codec2raw_muxer;
 extern const AVInputFormat  ff_concat_demuxer;
-extern const AVOutputFormat ff_crc_muxer;
+extern const FFOutputFormat ff_crc_muxer;
 extern const AVInputFormat  ff_dash_demuxer;
-extern const AVOutputFormat ff_dash_muxer;
+extern const FFOutputFormat ff_dash_muxer;
 extern const AVInputFormat  ff_data_demuxer;
-extern const AVOutputFormat ff_data_muxer;
+extern const FFOutputFormat ff_data_muxer;
 extern const AVInputFormat  ff_daud_demuxer;
-extern const AVOutputFormat ff_daud_muxer;
+extern const FFOutputFormat ff_daud_muxer;
 extern const AVInputFormat  ff_dcstr_demuxer;
 extern const AVInputFormat  ff_derf_demuxer;
 extern const AVInputFormat  ff_dfa_demuxer;
 extern const AVInputFormat  ff_dfpwm_demuxer;
-extern const AVOutputFormat ff_dfpwm_muxer;
+extern const FFOutputFormat ff_dfpwm_muxer;
 extern const AVInputFormat  ff_dhav_demuxer;
 extern const AVInputFormat  ff_dirac_demuxer;
-extern const AVOutputFormat ff_dirac_muxer;
+extern const FFOutputFormat ff_dirac_muxer;
 extern const AVInputFormat  ff_dnxhd_demuxer;
-extern const AVOutputFormat ff_dnxhd_muxer;
+extern const FFOutputFormat ff_dnxhd_muxer;
 extern const AVInputFormat  ff_dsf_demuxer;
 extern const AVInputFormat  ff_dsicin_demuxer;
 extern const AVInputFormat  ff_dss_demuxer;
 extern const AVInputFormat  ff_dts_demuxer;
-extern const AVOutputFormat ff_dts_muxer;
+extern const FFOutputFormat ff_dts_muxer;
 extern const AVInputFormat  ff_dtshd_demuxer;
 extern const AVInputFormat  ff_dv_demuxer;
-extern const AVOutputFormat ff_dv_muxer;
+extern const FFOutputFormat ff_dv_muxer;
 extern const AVInputFormat  ff_dvbsub_demuxer;
 extern const AVInputFormat  ff_dvbtxt_demuxer;
 extern const AVInputFormat  ff_dxa_demuxer;
 extern const AVInputFormat  ff_ea_demuxer;
 extern const AVInputFormat  ff_ea_cdata_demuxer;
 extern const AVInputFormat  ff_eac3_demuxer;
-extern const AVOutputFormat ff_eac3_muxer;
+extern const FFOutputFormat ff_eac3_muxer;
 extern const AVInputFormat  ff_epaf_demuxer;
-extern const AVOutputFormat ff_f4v_muxer;
+extern const FFOutputFormat ff_f4v_muxer;
 extern const AVInputFormat  ff_ffmetadata_demuxer;
-extern const AVOutputFormat ff_ffmetadata_muxer;
-extern const AVOutputFormat ff_fifo_muxer;
-extern const AVOutputFormat ff_fifo_test_muxer;
+extern const FFOutputFormat ff_ffmetadata_muxer;
+extern const FFOutputFormat ff_fifo_muxer;
+extern const FFOutputFormat ff_fifo_test_muxer;
 extern const AVInputFormat  ff_filmstrip_demuxer;
-extern const AVOutputFormat ff_filmstrip_muxer;
+extern const FFOutputFormat ff_filmstrip_muxer;
 extern const AVInputFormat  ff_fits_demuxer;
-extern const AVOutputFormat ff_fits_muxer;
+extern const FFOutputFormat ff_fits_muxer;
 extern const AVInputFormat  ff_flac_demuxer;
-extern const AVOutputFormat ff_flac_muxer;
+extern const FFOutputFormat ff_flac_muxer;
 extern const AVInputFormat  ff_flic_demuxer;
 extern const AVInputFormat  ff_flv_demuxer;
-extern const AVOutputFormat ff_flv_muxer;
+extern const FFOutputFormat ff_flv_muxer;
 extern const AVInputFormat  ff_live_flv_demuxer;
 extern const AVInputFormat  ff_fourxm_demuxer;
-extern const AVOutputFormat ff_framecrc_muxer;
-extern const AVOutputFormat ff_framehash_muxer;
-extern const AVOutputFormat ff_framemd5_muxer;
+extern const FFOutputFormat ff_framecrc_muxer;
+extern const FFOutputFormat ff_framehash_muxer;
+extern const FFOutputFormat ff_framemd5_muxer;
 extern const AVInputFormat  ff_frm_demuxer;
 extern const AVInputFormat  ff_fsb_demuxer;
 extern const AVInputFormat  ff_fwse_demuxer;
 extern const AVInputFormat  ff_g722_demuxer;
-extern const AVOutputFormat ff_g722_muxer;
+extern const FFOutputFormat ff_g722_muxer;
 extern const AVInputFormat  ff_g723_1_demuxer;
-extern const AVOutputFormat ff_g723_1_muxer;
+extern const FFOutputFormat ff_g723_1_muxer;
 extern const AVInputFormat  ff_g726_demuxer;
-extern const AVOutputFormat ff_g726_muxer;
+extern const FFOutputFormat ff_g726_muxer;
 extern const AVInputFormat  ff_g726le_demuxer;
-extern const AVOutputFormat ff_g726le_muxer;
+extern const FFOutputFormat ff_g726le_muxer;
 extern const AVInputFormat  ff_g729_demuxer;
 extern const AVInputFormat  ff_gdv_demuxer;
 extern const AVInputFormat  ff_genh_demuxer;
 extern const AVInputFormat  ff_gif_demuxer;
-extern const AVOutputFormat ff_gif_muxer;
+extern const FFOutputFormat ff_gif_muxer;
 extern const AVInputFormat  ff_gsm_demuxer;
-extern const AVOutputFormat ff_gsm_muxer;
+extern const FFOutputFormat ff_gsm_muxer;
 extern const AVInputFormat  ff_gxf_demuxer;
-extern const AVOutputFormat ff_gxf_muxer;
+extern const FFOutputFormat ff_gxf_muxer;
 extern const AVInputFormat  ff_h261_demuxer;
-extern const AVOutputFormat ff_h261_muxer;
+extern const FFOutputFormat ff_h261_muxer;
 extern const AVInputFormat  ff_h263_demuxer;
-extern const AVOutputFormat ff_h263_muxer;
+extern const FFOutputFormat ff_h263_muxer;
 extern const AVInputFormat  ff_h264_demuxer;
-extern const AVOutputFormat ff_h264_muxer;
-extern const AVOutputFormat ff_hash_muxer;
+extern const FFOutputFormat ff_h264_muxer;
+extern const FFOutputFormat ff_hash_muxer;
 extern const AVInputFormat  ff_hca_demuxer;
 extern const AVInputFormat  ff_hcom_demuxer;
-extern const AVOutputFormat ff_hds_muxer;
+extern const FFOutputFormat ff_hds_muxer;
 extern const AVInputFormat  ff_hevc_demuxer;
-extern const AVOutputFormat ff_hevc_muxer;
+extern const FFOutputFormat ff_hevc_muxer;
 extern const AVInputFormat  ff_hls_demuxer;
-extern const AVOutputFormat ff_hls_muxer;
+extern const FFOutputFormat ff_hls_muxer;
 extern const AVInputFormat  ff_hnm_demuxer;
 extern const AVInputFormat  ff_ico_demuxer;
-extern const AVOutputFormat ff_ico_muxer;
+extern const FFOutputFormat ff_ico_muxer;
 extern const AVInputFormat  ff_idcin_demuxer;
 extern const AVInputFormat  ff_idf_demuxer;
 extern const AVInputFormat  ff_iff_demuxer;
 extern const AVInputFormat  ff_ifv_demuxer;
 extern const AVInputFormat  ff_ilbc_demuxer;
-extern const AVOutputFormat ff_ilbc_muxer;
+extern const FFOutputFormat ff_ilbc_muxer;
 extern const AVInputFormat  ff_image2_demuxer;
-extern const AVOutputFormat ff_image2_muxer;
+extern const FFOutputFormat ff_image2_muxer;
 extern const AVInputFormat  ff_image2pipe_demuxer;
-extern const AVOutputFormat ff_image2pipe_muxer;
+extern const FFOutputFormat ff_image2pipe_muxer;
 extern const AVInputFormat  ff_image2_alias_pix_demuxer;
 extern const AVInputFormat  ff_image2_brender_pix_demuxer;
 extern const AVInputFormat  ff_imf_demuxer;
 extern const AVInputFormat  ff_ingenient_demuxer;
 extern const AVInputFormat  ff_ipmovie_demuxer;
-extern const AVOutputFormat ff_ipod_muxer;
+extern const FFOutputFormat ff_ipod_muxer;
 extern const AVInputFormat  ff_ipu_demuxer;
 extern const AVInputFormat  ff_ircam_demuxer;
-extern const AVOutputFormat ff_ircam_muxer;
-extern const AVOutputFormat ff_ismv_muxer;
+extern const FFOutputFormat ff_ircam_muxer;
+extern const FFOutputFormat ff_ismv_muxer;
 extern const AVInputFormat  ff_iss_demuxer;
 extern const AVInputFormat  ff_iv8_demuxer;
 extern const AVInputFormat  ff_ivf_demuxer;
-extern const AVOutputFormat ff_ivf_muxer;
+extern const FFOutputFormat ff_ivf_muxer;
 extern const AVInputFormat  ff_ivr_demuxer;
 extern const AVInputFormat  ff_jacosub_demuxer;
-extern const AVOutputFormat ff_jacosub_muxer;
+extern const FFOutputFormat ff_jacosub_muxer;
 extern const AVInputFormat  ff_jv_demuxer;
 extern const AVInputFormat  ff_kux_demuxer;
 extern const AVInputFormat  ff_kvag_demuxer;
-extern const AVOutputFormat ff_kvag_muxer;
+extern const FFOutputFormat ff_kvag_muxer;
 extern const AVInputFormat  ff_laf_demuxer;
-extern const AVOutputFormat ff_latm_muxer;
+extern const FFOutputFormat ff_latm_muxer;
 extern const AVInputFormat  ff_lmlm4_demuxer;
 extern const AVInputFormat  ff_loas_demuxer;
 extern const AVInputFormat  ff_luodat_demuxer;
 extern const AVInputFormat  ff_lrc_demuxer;
-extern const AVOutputFormat ff_lrc_muxer;
+extern const FFOutputFormat ff_lrc_muxer;
 extern const AVInputFormat  ff_lvf_demuxer;
 extern const AVInputFormat  ff_lxf_demuxer;
 extern const AVInputFormat  ff_m4v_demuxer;
-extern const AVOutputFormat ff_m4v_muxer;
+extern const FFOutputFormat ff_m4v_muxer;
 extern const AVInputFormat  ff_mca_demuxer;
 extern const AVInputFormat  ff_mcc_demuxer;
-extern const AVOutputFormat ff_md5_muxer;
+extern const FFOutputFormat ff_md5_muxer;
 extern const AVInputFormat  ff_matroska_demuxer;
-extern const AVOutputFormat ff_matroska_muxer;
-extern const AVOutputFormat ff_matroska_audio_muxer;
+extern const FFOutputFormat ff_matroska_muxer;
+extern const FFOutputFormat ff_matroska_audio_muxer;
 extern const AVInputFormat  ff_mgsts_demuxer;
 extern const AVInputFormat  ff_microdvd_demuxer;
-extern const AVOutputFormat ff_microdvd_muxer;
+extern const FFOutputFormat ff_microdvd_muxer;
 extern const AVInputFormat  ff_mjpeg_demuxer;
-extern const AVOutputFormat ff_mjpeg_muxer;
+extern const FFOutputFormat ff_mjpeg_muxer;
 extern const AVInputFormat  ff_mjpeg_2000_demuxer;
 extern const AVInputFormat  ff_mlp_demuxer;
-extern const AVOutputFormat ff_mlp_muxer;
+extern const FFOutputFormat ff_mlp_muxer;
 extern const AVInputFormat  ff_mlv_demuxer;
 extern const AVInputFormat  ff_mm_demuxer;
 extern const AVInputFormat  ff_mmf_demuxer;
-extern const AVOutputFormat ff_mmf_muxer;
+extern const FFOutputFormat ff_mmf_muxer;
 extern const AVInputFormat  ff_mods_demuxer;
 extern const AVInputFormat  ff_moflex_demuxer;
 extern const AVInputFormat  ff_mov_demuxer;
-extern const AVOutputFormat ff_mov_muxer;
-extern const AVOutputFormat ff_mp2_muxer;
+extern const FFOutputFormat ff_mov_muxer;
+extern const FFOutputFormat ff_mp2_muxer;
 extern const AVInputFormat  ff_mp3_demuxer;
-extern const AVOutputFormat ff_mp3_muxer;
-extern const AVOutputFormat ff_mp4_muxer;
+extern const FFOutputFormat ff_mp3_muxer;
+extern const FFOutputFormat ff_mp4_muxer;
 extern const AVInputFormat  ff_mpc_demuxer;
 extern const AVInputFormat  ff_mpc8_demuxer;
-extern const AVOutputFormat ff_mpeg1system_muxer;
-extern const AVOutputFormat ff_mpeg1vcd_muxer;
-extern const AVOutputFormat ff_mpeg1video_muxer;
-extern const AVOutputFormat ff_mpeg2dvd_muxer;
-extern const AVOutputFormat ff_mpeg2svcd_muxer;
-extern const AVOutputFormat ff_mpeg2video_muxer;
-extern const AVOutputFormat ff_mpeg2vob_muxer;
+extern const FFOutputFormat ff_mpeg1system_muxer;
+extern const FFOutputFormat ff_mpeg1vcd_muxer;
+extern const FFOutputFormat ff_mpeg1video_muxer;
+extern const FFOutputFormat ff_mpeg2dvd_muxer;
+extern const FFOutputFormat ff_mpeg2svcd_muxer;
+extern const FFOutputFormat ff_mpeg2video_muxer;
+extern const FFOutputFormat ff_mpeg2vob_muxer;
 extern const AVInputFormat  ff_mpegps_demuxer;
 extern const AVInputFormat  ff_mpegts_demuxer;
-extern const AVOutputFormat ff_mpegts_muxer;
+extern const FFOutputFormat ff_mpegts_muxer;
 extern const AVInputFormat  ff_mpegtsraw_demuxer;
 extern const AVInputFormat  ff_mpegvideo_demuxer;
 extern const AVInputFormat  ff_mpjpeg_demuxer;
-extern const AVOutputFormat ff_mpjpeg_muxer;
+extern const FFOutputFormat ff_mpjpeg_muxer;
 extern const AVInputFormat  ff_mpl2_demuxer;
 extern const AVInputFormat  ff_mpsub_demuxer;
 extern const AVInputFormat  ff_msf_demuxer;
@@ -304,114 +305,114 @@ extern const AVInputFormat  ff_musx_demuxer;
 extern const AVInputFormat  ff_mv_demuxer;
 extern const AVInputFormat  ff_mvi_demuxer;
 extern const AVInputFormat  ff_mxf_demuxer;
-extern const AVOutputFormat ff_mxf_muxer;
-extern const AVOutputFormat ff_mxf_d10_muxer;
-extern const AVOutputFormat ff_mxf_opatom_muxer;
+extern const FFOutputFormat ff_mxf_muxer;
+extern const FFOutputFormat ff_mxf_d10_muxer;
+extern const FFOutputFormat ff_mxf_opatom_muxer;
 extern const AVInputFormat  ff_mxg_demuxer;
 extern const AVInputFormat  ff_nc_demuxer;
 extern const AVInputFormat  ff_nistsphere_demuxer;
 extern const AVInputFormat  ff_nsp_demuxer;
 extern const AVInputFormat  ff_nsv_demuxer;
-extern const AVOutputFormat ff_null_muxer;
+extern const FFOutputFormat ff_null_muxer;
 extern const AVInputFormat  ff_nut_demuxer;
-extern const AVOutputFormat ff_nut_muxer;
+extern const FFOutputFormat ff_nut_muxer;
 extern const AVInputFormat  ff_nuv_demuxer;
 extern const AVInputFormat  ff_obu_demuxer;
-extern const AVOutputFormat ff_obu_muxer;
-extern const AVOutputFormat ff_oga_muxer;
+extern const FFOutputFormat ff_obu_muxer;
+extern const FFOutputFormat ff_oga_muxer;
 extern const AVInputFormat  ff_ogg_demuxer;
-extern const AVOutputFormat ff_ogg_muxer;
-extern const AVOutputFormat ff_ogv_muxer;
+extern const FFOutputFormat ff_ogg_muxer;
+extern const FFOutputFormat ff_ogv_muxer;
 extern const AVInputFormat  ff_oma_demuxer;
-extern const AVOutputFormat ff_oma_muxer;
-extern const AVOutputFormat ff_opus_muxer;
+extern const FFOutputFormat ff_oma_muxer;
+extern const FFOutputFormat ff_opus_muxer;
 extern const AVInputFormat  ff_paf_demuxer;
 extern const AVInputFormat  ff_pcm_alaw_demuxer;
-extern const AVOutputFormat ff_pcm_alaw_muxer;
+extern const FFOutputFormat ff_pcm_alaw_muxer;
 extern const AVInputFormat  ff_pcm_mulaw_demuxer;
-extern const AVOutputFormat ff_pcm_mulaw_muxer;
+extern const FFOutputFormat ff_pcm_mulaw_muxer;
 extern const AVInputFormat  ff_pcm_vidc_demuxer;
-extern const AVOutputFormat ff_pcm_vidc_muxer;
+extern const FFOutputFormat ff_pcm_vidc_muxer;
 extern const AVInputFormat  ff_pcm_f64be_demuxer;
-extern const AVOutputFormat ff_pcm_f64be_muxer;
+extern const FFOutputFormat ff_pcm_f64be_muxer;
 extern const AVInputFormat  ff_pcm_f64le_demuxer;
-extern const AVOutputFormat ff_pcm_f64le_muxer;
+extern const FFOutputFormat ff_pcm_f64le_muxer;
 extern const AVInputFormat  ff_pcm_f32be_demuxer;
-extern const AVOutputFormat ff_pcm_f32be_muxer;
+extern const FFOutputFormat ff_pcm_f32be_muxer;
 extern const AVInputFormat  ff_pcm_f32le_demuxer;
-extern const AVOutputFormat ff_pcm_f32le_muxer;
+extern const FFOutputFormat ff_pcm_f32le_muxer;
 extern const AVInputFormat  ff_pcm_s32be_demuxer;
-extern const AVOutputFormat ff_pcm_s32be_muxer;
+extern const FFOutputFormat ff_pcm_s32be_muxer;
 extern const AVInputFormat  ff_pcm_s32le_demuxer;
-extern const AVOutputFormat ff_pcm_s32le_muxer;
+extern const FFOutputFormat ff_pcm_s32le_muxer;
 extern const AVInputFormat  ff_pcm_s24be_demuxer;
-extern const AVOutputFormat ff_pcm_s24be_muxer;
+extern const FFOutputFormat ff_pcm_s24be_muxer;
 extern const AVInputFormat  ff_pcm_s24le_demuxer;
-extern const AVOutputFormat ff_pcm_s24le_muxer;
+extern const FFOutputFormat ff_pcm_s24le_muxer;
 extern const AVInputFormat  ff_pcm_s16be_demuxer;
-extern const AVOutputFormat ff_pcm_s16be_muxer;
+extern const FFOutputFormat ff_pcm_s16be_muxer;
 extern const AVInputFormat  ff_pcm_s16le_demuxer;
-extern const AVOutputFormat ff_pcm_s16le_muxer;
+extern const FFOutputFormat ff_pcm_s16le_muxer;
 extern const AVInputFormat  ff_pcm_s8_demuxer;
-extern const AVOutputFormat ff_pcm_s8_muxer;
+extern const FFOutputFormat ff_pcm_s8_muxer;
 extern const AVInputFormat  ff_pcm_u32be_demuxer;
-extern const AVOutputFormat ff_pcm_u32be_muxer;
+extern const FFOutputFormat ff_pcm_u32be_muxer;
 extern const AVInputFormat  ff_pcm_u32le_demuxer;
-extern const AVOutputFormat ff_pcm_u32le_muxer;
+extern const FFOutputFormat ff_pcm_u32le_muxer;
 extern const AVInputFormat  ff_pcm_u24be_demuxer;
-extern const AVOutputFormat ff_pcm_u24be_muxer;
+extern const FFOutputFormat ff_pcm_u24be_muxer;
 extern const AVInputFormat  ff_pcm_u24le_demuxer;
-extern const AVOutputFormat ff_pcm_u24le_muxer;
+extern const FFOutputFormat ff_pcm_u24le_muxer;
 extern const AVInputFormat  ff_pcm_u16be_demuxer;
-extern const AVOutputFormat ff_pcm_u16be_muxer;
+extern const FFOutputFormat ff_pcm_u16be_muxer;
 extern const AVInputFormat  ff_pcm_u16le_demuxer;
-extern const AVOutputFormat ff_pcm_u16le_muxer;
+extern const FFOutputFormat ff_pcm_u16le_muxer;
 extern const AVInputFormat  ff_pcm_u8_demuxer;
-extern const AVOutputFormat ff_pcm_u8_muxer;
+extern const FFOutputFormat ff_pcm_u8_muxer;
 extern const AVInputFormat  ff_pjs_demuxer;
 extern const AVInputFormat  ff_pmp_demuxer;
 extern const AVInputFormat  ff_pp_bnk_demuxer;
-extern const AVOutputFormat ff_psp_muxer;
+extern const FFOutputFormat ff_psp_muxer;
 extern const AVInputFormat  ff_pva_demuxer;
 extern const AVInputFormat  ff_pvf_demuxer;
 extern const AVInputFormat  ff_qcp_demuxer;
 extern const AVInputFormat  ff_r3d_demuxer;
 extern const AVInputFormat  ff_rawvideo_demuxer;
-extern const AVOutputFormat ff_rawvideo_muxer;
+extern const FFOutputFormat ff_rawvideo_muxer;
 extern const AVInputFormat  ff_realtext_demuxer;
 extern const AVInputFormat  ff_redspark_demuxer;
 extern const AVInputFormat  ff_rl2_demuxer;
 extern const AVInputFormat  ff_rm_demuxer;
-extern const AVOutputFormat ff_rm_muxer;
+extern const FFOutputFormat ff_rm_muxer;
 extern const AVInputFormat  ff_roq_demuxer;
-extern const AVOutputFormat ff_roq_muxer;
+extern const FFOutputFormat ff_roq_muxer;
 extern const AVInputFormat  ff_rpl_demuxer;
 extern const AVInputFormat  ff_rsd_demuxer;
 extern const AVInputFormat  ff_rso_demuxer;
-extern const AVOutputFormat ff_rso_muxer;
+extern const FFOutputFormat ff_rso_muxer;
 extern const AVInputFormat  ff_rtp_demuxer;
-extern const AVOutputFormat ff_rtp_muxer;
-extern const AVOutputFormat ff_rtp_mpegts_muxer;
+extern const FFOutputFormat ff_rtp_muxer;
+extern const FFOutputFormat ff_rtp_mpegts_muxer;
 extern const AVInputFormat  ff_rtsp_demuxer;
-extern const AVOutputFormat ff_rtsp_muxer;
+extern const FFOutputFormat ff_rtsp_muxer;
 extern const AVInputFormat  ff_s337m_demuxer;
 extern const AVInputFormat  ff_sami_demuxer;
 extern const AVInputFormat  ff_sap_demuxer;
-extern const AVOutputFormat ff_sap_muxer;
+extern const FFOutputFormat ff_sap_muxer;
 extern const AVInputFormat  ff_sbc_demuxer;
-extern const AVOutputFormat ff_sbc_muxer;
+extern const FFOutputFormat ff_sbc_muxer;
 extern const AVInputFormat  ff_sbg_demuxer;
 extern const AVInputFormat  ff_scc_demuxer;
-extern const AVOutputFormat ff_scc_muxer;
+extern const FFOutputFormat ff_scc_muxer;
 extern const AVInputFormat  ff_scd_demuxer;
 extern const AVInputFormat  ff_sdp_demuxer;
 extern const AVInputFormat  ff_sdr2_demuxer;
 extern const AVInputFormat  ff_sds_demuxer;
 extern const AVInputFormat  ff_sdx_demuxer;
 extern const AVInputFormat  ff_segafilm_demuxer;
-extern const AVOutputFormat ff_segafilm_muxer;
-extern const AVOutputFormat ff_segment_muxer;
-extern const AVOutputFormat ff_stream_segment_muxer;
+extern const FFOutputFormat ff_segafilm_muxer;
+extern const FFOutputFormat ff_segment_muxer;
+extern const FFOutputFormat ff_stream_segment_muxer;
 extern const AVInputFormat  ff_ser_demuxer;
 extern const AVInputFormat  ff_sga_demuxer;
 extern const AVInputFormat  ff_shorten_demuxer;
@@ -420,85 +421,85 @@ extern const AVInputFormat  ff_simbiosis_imx_demuxer;
 extern const AVInputFormat  ff_sln_demuxer;
 extern const AVInputFormat  ff_smacker_demuxer;
 extern const AVInputFormat  ff_smjpeg_demuxer;
-extern const AVOutputFormat ff_smjpeg_muxer;
-extern const AVOutputFormat ff_smoothstreaming_muxer;
+extern const FFOutputFormat ff_smjpeg_muxer;
+extern const FFOutputFormat ff_smoothstreaming_muxer;
 extern const AVInputFormat  ff_smush_demuxer;
 extern const AVInputFormat  ff_sol_demuxer;
 extern const AVInputFormat  ff_sox_demuxer;
-extern const AVOutputFormat ff_sox_muxer;
-extern const AVOutputFormat ff_spx_muxer;
+extern const FFOutputFormat ff_sox_muxer;
+extern const FFOutputFormat ff_spx_muxer;
 extern const AVInputFormat  ff_spdif_demuxer;
-extern const AVOutputFormat ff_spdif_muxer;
+extern const FFOutputFormat ff_spdif_muxer;
 extern const AVInputFormat  ff_srt_demuxer;
-extern const AVOutputFormat ff_srt_muxer;
+extern const FFOutputFormat ff_srt_muxer;
 extern const AVInputFormat  ff_str_demuxer;
 extern const AVInputFormat  ff_stl_demuxer;
-extern const AVOutputFormat ff_streamhash_muxer;
+extern const FFOutputFormat ff_streamhash_muxer;
 extern const AVInputFormat  ff_subviewer1_demuxer;
 extern const AVInputFormat  ff_subviewer_demuxer;
 extern const AVInputFormat  ff_sup_demuxer;
-extern const AVOutputFormat ff_sup_muxer;
+extern const FFOutputFormat ff_sup_muxer;
 extern const AVInputFormat  ff_svag_demuxer;
 extern const AVInputFormat  ff_svs_demuxer;
 extern const AVInputFormat  ff_swf_demuxer;
-extern const AVOutputFormat ff_swf_muxer;
+extern const FFOutputFormat ff_swf_muxer;
 extern const AVInputFormat  ff_tak_demuxer;
-extern const AVOutputFormat ff_tee_muxer;
+extern const FFOutputFormat ff_tee_muxer;
 extern const AVInputFormat  ff_tedcaptions_demuxer;
-extern const AVOutputFormat ff_tg2_muxer;
-extern const AVOutputFormat ff_tgp_muxer;
+extern const FFOutputFormat ff_tg2_muxer;
+extern const FFOutputFormat ff_tgp_muxer;
 extern const AVInputFormat  ff_thp_demuxer;
 extern const AVInputFormat  ff_threedostr_demuxer;
 extern const AVInputFormat  ff_tiertexseq_demuxer;
-extern const AVOutputFormat ff_mkvtimestamp_v2_muxer;
+extern const FFOutputFormat ff_mkvtimestamp_v2_muxer;
 extern const AVInputFormat  ff_tmv_demuxer;
 extern const AVInputFormat  ff_truehd_demuxer;
-extern const AVOutputFormat ff_truehd_muxer;
+extern const FFOutputFormat ff_truehd_muxer;
 extern const AVInputFormat  ff_tta_demuxer;
-extern const AVOutputFormat ff_tta_muxer;
-extern const AVOutputFormat ff_ttml_muxer;
+extern const FFOutputFormat ff_tta_muxer;
+extern const FFOutputFormat ff_ttml_muxer;
 extern const AVInputFormat  ff_txd_demuxer;
 extern const AVInputFormat  ff_tty_demuxer;
 extern const AVInputFormat  ff_ty_demuxer;
-extern const AVOutputFormat ff_uncodedframecrc_muxer;
+extern const FFOutputFormat ff_uncodedframecrc_muxer;
 extern const AVInputFormat  ff_v210_demuxer;
 extern const AVInputFormat  ff_v210x_demuxer;
 extern const AVInputFormat  ff_vag_demuxer;
 extern const AVInputFormat  ff_vc1_demuxer;
-extern const AVOutputFormat ff_vc1_muxer;
+extern const FFOutputFormat ff_vc1_muxer;
 extern const AVInputFormat  ff_vc1t_demuxer;
-extern const AVOutputFormat ff_vc1t_muxer;
+extern const FFOutputFormat ff_vc1t_muxer;
 extern const AVInputFormat  ff_vividas_demuxer;
 extern const AVInputFormat  ff_vivo_demuxer;
 extern const AVInputFormat  ff_vmd_demuxer;
 extern const AVInputFormat  ff_vobsub_demuxer;
 extern const AVInputFormat  ff_voc_demuxer;
-extern const AVOutputFormat ff_voc_muxer;
+extern const FFOutputFormat ff_voc_muxer;
 extern const AVInputFormat  ff_vpk_demuxer;
 extern const AVInputFormat  ff_vplayer_demuxer;
 extern const AVInputFormat  ff_vqf_demuxer;
 extern const AVInputFormat  ff_w64_demuxer;
-extern const AVOutputFormat ff_w64_muxer;
+extern const FFOutputFormat ff_w64_muxer;
 extern const AVInputFormat  ff_wady_demuxer;
 extern const AVInputFormat  ff_wav_demuxer;
-extern const AVOutputFormat ff_wav_muxer;
+extern const FFOutputFormat ff_wav_muxer;
 extern const AVInputFormat  ff_wc3_demuxer;
-extern const AVOutputFormat ff_webm_muxer;
+extern const FFOutputFormat ff_webm_muxer;
 extern const AVInputFormat  ff_webm_dash_manifest_demuxer;
-extern const AVOutputFormat ff_webm_dash_manifest_muxer;
-extern const AVOutputFormat ff_webm_chunk_muxer;
-extern const AVOutputFormat ff_webp_muxer;
+extern const FFOutputFormat ff_webm_dash_manifest_muxer;
+extern const FFOutputFormat ff_webm_chunk_muxer;
+extern const FFOutputFormat ff_webp_muxer;
 extern const AVInputFormat  ff_webvtt_demuxer;
-extern const AVOutputFormat ff_webvtt_muxer;
+extern const FFOutputFormat ff_webvtt_muxer;
 extern const AVInputFormat  ff_wsaud_demuxer;
-extern const AVOutputFormat ff_wsaud_muxer;
+extern const FFOutputFormat ff_wsaud_muxer;
 extern const AVInputFormat  ff_wsd_demuxer;
 extern const AVInputFormat  ff_wsvqa_demuxer;
 extern const AVInputFormat  ff_wtv_demuxer;
-extern const AVOutputFormat ff_wtv_muxer;
+extern const FFOutputFormat ff_wtv_muxer;
 extern const AVInputFormat  ff_wve_demuxer;
 extern const AVInputFormat  ff_wv_demuxer;
-extern const AVOutputFormat ff_wv_muxer;
+extern const FFOutputFormat ff_wv_muxer;
 extern const AVInputFormat  ff_xa_demuxer;
 extern const AVInputFormat  ff_xbin_demuxer;
 extern const AVInputFormat  ff_xmd_demuxer;
@@ -507,7 +508,7 @@ extern const AVInputFormat  ff_xvag_demuxer;
 extern const AVInputFormat  ff_xwma_demuxer;
 extern const AVInputFormat  ff_yop_demuxer;
 extern const AVInputFormat  ff_yuv4mpegpipe_demuxer;
-extern const AVOutputFormat ff_yuv4mpegpipe_muxer;
+extern const FFOutputFormat ff_yuv4mpegpipe_muxer;
 /* image demuxers */
 extern const AVInputFormat  ff_image_bmp_pipe_demuxer;
 extern const AVInputFormat  ff_image_cri_pipe_demuxer;
@@ -547,7 +548,7 @@ extern const AVInputFormat  ff_image_xpm_pipe_demuxer;
 extern const AVInputFormat  ff_image_xwd_pipe_demuxer;
 
 /* external libraries */
-extern const AVOutputFormat ff_chromaprint_muxer;
+extern const FFOutputFormat ff_chromaprint_muxer;
 extern const AVInputFormat  ff_libgme_demuxer;
 extern const AVInputFormat  ff_libmodplug_demuxer;
 extern const AVInputFormat  ff_libopenmpt_demuxer;
@@ -563,19 +564,21 @@ const AVOutputFormat *av_muxer_iterate(void **opaque)
 {
     static const uintptr_t size = sizeof(muxer_list)/sizeof(muxer_list[0]) - 1;
     uintptr_t i = (uintptr_t)*opaque;
-    const AVOutputFormat *f = NULL;
+    const FFOutputFormat *f = NULL;
     uintptr_t tmp;
 
     if (i < size) {
         f = muxer_list[i];
     } else if (tmp = atomic_load_explicit(&outdev_list_intptr, memory_order_relaxed)) {
-        const AVOutputFormat *const *outdev_list = (const AVOutputFormat *const *)tmp;
+        const FFOutputFormat *const *outdev_list = (const FFOutputFormat *const *)tmp;
         f = outdev_list[i - size];
     }
 
-    if (f)
+    if (f) {
         *opaque = (void*)(i + 1);
-    return f;
+        return &f->p;
+    }
+    return NULL;
 }
 
 const AVInputFormat *av_demuxer_iterate(void **opaque)
@@ -597,7 +600,7 @@ const AVInputFormat *av_demuxer_iterate(void **opaque)
     return f;
 }
 
-void avpriv_register_devices(const AVOutputFormat * const o[], const AVInputFormat * const i[])
+void avpriv_register_devices(const FFOutputFormat * const o[], const AVInputFormat * const i[])
 {
     atomic_store_explicit(&outdev_list_intptr, (uintptr_t)o, memory_order_relaxed);
     atomic_store_explicit(&indev_list_intptr,  (uintptr_t)i, memory_order_relaxed);
diff --git a/libavformat/alp.c b/libavformat/alp.c
index 40e4890a387..8c6066a59c6 100644
--- a/libavformat/alp.c
+++ b/libavformat/alp.c
@@ -25,6 +25,7 @@
 #include "libavutil/channel_layout.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/internal.h"
@@ -290,16 +291,16 @@ static const AVClass alp_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT
 };
 
-const AVOutputFormat ff_alp_muxer = {
-    .name           = "alp",
-    .long_name      = NULL_IF_CONFIG_SMALL("LEGO Racers ALP"),
-    .extensions     = "tun,pcm",
-    .audio_codec    = AV_CODEC_ID_ADPCM_IMA_ALP,
-    .video_codec    = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_alp_muxer = {
+    .p.name         = "alp",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("LEGO Racers ALP"),
+    .p.extensions   = "tun,pcm",
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_IMA_ALP,
+    .p.video_codec  = AV_CODEC_ID_NONE,
+    .p.priv_class   = &alp_muxer_class,
     .init           = alp_write_init,
     .write_header   = alp_write_header,
     .write_packet   = ff_raw_write_packet,
-    .priv_class     = &alp_muxer_class,
     .priv_data_size = sizeof(ALPMuxContext)
 };
 #endif
diff --git a/libavformat/amr.c b/libavformat/amr.c
index 88f07ce0bac..b6615d8295c 100644
--- a/libavformat/amr.c
+++ b/libavformat/amr.c
@@ -30,6 +30,7 @@ Write and read amr data according to RFC3267, http://www.ietf.org/rfc/rfc3267.tx
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawdec.h"
 #include "rawenc.h"
 
@@ -266,15 +267,15 @@ const AVInputFormat ff_amrwb_demuxer = {
 #endif
 
 #if CONFIG_AMR_MUXER
-const AVOutputFormat ff_amr_muxer = {
-    .name              = "amr",
-    .long_name         = NULL_IF_CONFIG_SMALL("3GPP AMR"),
-    .mime_type         = "audio/amr",
-    .extensions        = "amr",
-    .audio_codec       = AV_CODEC_ID_AMR_NB,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_amr_muxer = {
+    .p.name            = "amr",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("3GPP AMR"),
+    .p.mime_type       = "audio/amr",
+    .p.extensions      = "amr",
+    .p.audio_codec     = AV_CODEC_ID_AMR_NB,
+    .p.video_codec     = AV_CODEC_ID_NONE,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
     .write_header      = amr_write_header,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
 };
 #endif
diff --git a/libavformat/amvenc.c b/libavformat/amvenc.c
index 28d4879b19e..e1b1ffd42e2 100644
--- a/libavformat/amvenc.c
+++ b/libavformat/amvenc.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include "avformat.h"
+#include "mux.h"
 #include "riff.h"
 #include "internal.h"
 #include "avio_internal.h"
@@ -401,14 +402,14 @@ static int amv_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_amv_muxer = {
-    .name           = "amv",
-    .long_name      = NULL_IF_CONFIG_SMALL("AMV"),
-    .mime_type      = "video/amv",
-    .extensions     = "amv",
+const FFOutputFormat ff_amv_muxer = {
+    .p.name         = "amv",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("AMV"),
+    .p.mime_type    = "video/amv",
+    .p.extensions   = "amv",
     .priv_data_size = sizeof(AMVContext),
-    .audio_codec    = AV_CODEC_ID_ADPCM_IMA_AMV,
-    .video_codec    = AV_CODEC_ID_AMV,
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_IMA_AMV,
+    .p.video_codec  = AV_CODEC_ID_AMV,
     .init           = amv_init,
     .deinit         = amv_deinit,
     .write_header   = amv_write_header,
diff --git a/libavformat/apm.c b/libavformat/apm.c
index a3ddc08e83b..ccb8e22437e 100644
--- a/libavformat/apm.c
+++ b/libavformat/apm.c
@@ -24,6 +24,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/internal.h"
@@ -303,12 +304,12 @@ static int apm_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_apm_muxer = {
-    .name           = "apm",
-    .long_name      = NULL_IF_CONFIG_SMALL("Ubisoft Rayman 2 APM"),
-    .extensions     = "apm",
-    .audio_codec    = AV_CODEC_ID_ADPCM_IMA_APM,
-    .video_codec    = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_apm_muxer = {
+    .p.name         = "apm",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Ubisoft Rayman 2 APM"),
+    .p.extensions   = "apm",
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_IMA_APM,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .init           = apm_write_init,
     .write_header   = apm_write_header,
     .write_packet   = ff_raw_write_packet,
diff --git a/libavformat/apngenc.c b/libavformat/apngenc.c
index cddb148d50b..a0af916f141 100644
--- a/libavformat/apngenc.c
+++ b/libavformat/apngenc.c
@@ -22,6 +22,7 @@
  */
 
 #include "avformat.h"
+#include "mux.h"
 #include "libavutil/avassert.h"
 #include "libavutil/crc.h"
 #include "libavutil/intreadwrite.h"
@@ -306,18 +307,18 @@ static const AVClass apng_muxer_class = {
     .option     = options,
 };
 
-const AVOutputFormat ff_apng_muxer = {
-    .name           = "apng",
-    .long_name      = NULL_IF_CONFIG_SMALL("Animated Portable Network Graphics"),
-    .mime_type      = "image/png",
-    .extensions     = "apng",
+const FFOutputFormat ff_apng_muxer = {
+    .p.name         = "apng",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Animated Portable Network Graphics"),
+    .p.mime_type    = "image/png",
+    .p.extensions   = "apng",
     .priv_data_size = sizeof(APNGMuxContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_APNG,
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_APNG,
     .write_header   = apng_write_header,
     .write_packet   = apng_write_packet,
     .write_trailer  = apng_write_trailer,
     .deinit         = apng_deinit,
-    .priv_class     = &apng_muxer_class,
-    .flags          = AVFMT_VARIABLE_FPS,
+    .p.priv_class   = &apng_muxer_class,
+    .p.flags        = AVFMT_VARIABLE_FPS,
 };
diff --git a/libavformat/argo_asf.c b/libavformat/argo_asf.c
index 39a60a0dde4..5f38b68b6ac 100644
--- a/libavformat/argo_asf.c
+++ b/libavformat/argo_asf.c
@@ -25,6 +25,7 @@
 #include "libavutil/avstring.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/avassert.h"
@@ -470,20 +471,20 @@ static const AVClass argo_asf_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT
 };
 
-const AVOutputFormat ff_argo_asf_muxer = {
-    .name           = "argo_asf",
-    .long_name      = NULL_IF_CONFIG_SMALL("Argonaut Games ASF"),
+const FFOutputFormat ff_argo_asf_muxer = {
+    .p.name         = "argo_asf",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Argonaut Games ASF"),
     /*
      * NB: Can't do this as it conflicts with the actual ASF format.
-     * .extensions  = "asf",
+     * .p.extensions  = "asf",
      */
-    .audio_codec    = AV_CODEC_ID_ADPCM_ARGO,
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_ARGO,
+    .p.video_codec  = AV_CODEC_ID_NONE,
+    .p.priv_class   = &argo_asf_muxer_class,
     .init           = argo_asf_write_init,
     .write_header   = argo_asf_write_header,
     .write_packet   = argo_asf_write_packet,
     .write_trailer  = argo_asf_write_trailer,
-    .priv_class     = &argo_asf_muxer_class,
     .priv_data_size = sizeof(ArgoASFMuxContext)
 };
 #endif
diff --git a/libavformat/argo_cvg.c b/libavformat/argo_cvg.c
index aedc7c4a329..2c74200b7d8 100644
--- a/libavformat/argo_cvg.c
+++ b/libavformat/argo_cvg.c
@@ -26,6 +26,7 @@
 #include "libavutil/channel_layout.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/opt.h"
 #include "libavutil/intreadwrite.h"
 
@@ -400,17 +401,17 @@ static const AVClass argo_cvg_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT
 };
 
-const AVOutputFormat ff_argo_cvg_muxer = {
-    .name           = "argo_cvg",
-    .long_name      = NULL_IF_CONFIG_SMALL("Argonaut Games CVG"),
-    .extensions     = "cvg",
-    .audio_codec    = AV_CODEC_ID_ADPCM_PSX,
-    .video_codec    = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_argo_cvg_muxer = {
+    .p.name         = "argo_cvg",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Argonaut Games CVG"),
+    .p.extensions   = "cvg",
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_PSX,
+    .p.video_codec  = AV_CODEC_ID_NONE,
+    .p.priv_class   = &argo_cvg_muxer_class,
     .init           = argo_cvg_write_init,
     .write_header   = argo_cvg_write_header,
     .write_packet   = argo_cvg_write_packet,
     .write_trailer  = argo_cvg_write_trailer,
-    .priv_class     = &argo_cvg_muxer_class,
     .priv_data_size = sizeof(ArgoCVGMuxContext),
 };
 #endif
diff --git a/libavformat/asfenc.c b/libavformat/asfenc.c
index 47240fc0a80..244c7e7a271 100644
--- a/libavformat/asfenc.c
+++ b/libavformat/asfenc.c
@@ -1129,39 +1129,39 @@ static const AVClass asf_muxer_class = {
 };
 
 #if CONFIG_ASF_MUXER
-const AVOutputFormat ff_asf_muxer = {
-    .name           = "asf",
-    .long_name      = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
-    .mime_type      = "video/x-ms-asf",
-    .extensions     = "asf,wmv,wma",
+const FFOutputFormat ff_asf_muxer = {
+    .p.name         = "asf",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
+    .p.mime_type    = "video/x-ms-asf",
+    .p.extensions   = "asf,wmv,wma",
+    .p.audio_codec  = AV_CODEC_ID_WMAV2,
+    .p.video_codec  = AV_CODEC_ID_MSMPEG4V3,
+    .p.flags        = AVFMT_GLOBALHEADER,
+    .p.codec_tag    = asf_codec_tags,
+    .p.priv_class   = &asf_muxer_class,
     .priv_data_size = sizeof(ASFContext),
-    .audio_codec    = AV_CODEC_ID_WMAV2,
-    .video_codec    = AV_CODEC_ID_MSMPEG4V3,
     .write_header   = asf_write_header,
     .write_packet   = asf_write_packet,
     .write_trailer  = asf_write_trailer,
-    .flags          = AVFMT_GLOBALHEADER,
-    .codec_tag      = asf_codec_tags,
-    .priv_class        = &asf_muxer_class,
     .deinit         = asf_deinit,
 };
 #endif /* CONFIG_ASF_MUXER */
 
 #if CONFIG_ASF_STREAM_MUXER
-const AVOutputFormat ff_asf_stream_muxer = {
-    .name           = "asf_stream",
-    .long_name      = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
-    .mime_type      = "video/x-ms-asf",
-    .extensions     = "asf,wmv,wma",
+const FFOutputFormat ff_asf_stream_muxer = {
+    .p.name         = "asf_stream",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
+    .p.mime_type    = "video/x-ms-asf",
+    .p.extensions   = "asf,wmv,wma",
     .priv_data_size = sizeof(ASFContext),
-    .audio_codec    = AV_CODEC_ID_WMAV2,
-    .video_codec    = AV_CODEC_ID_MSMPEG4V3,
+    .p.audio_codec  = AV_CODEC_ID_WMAV2,
+    .p.video_codec  = AV_CODEC_ID_MSMPEG4V3,
     .write_header   = asf_write_stream_header,
     .write_packet   = asf_write_packet,
     .write_trailer  = asf_write_trailer,
-    .flags          = AVFMT_GLOBALHEADER,
-    .codec_tag      = asf_codec_tags,
-    .priv_class     = &asf_muxer_class,
+    .p.flags        = AVFMT_GLOBALHEADER,
+    .p.codec_tag    = asf_codec_tags,
+    .p.priv_class   = &asf_muxer_class,
     .deinit         = asf_deinit,
 };
 #endif /* CONFIG_ASF_STREAM_MUXER */
diff --git a/libavformat/assenc.c b/libavformat/assenc.c
index 1600f0a02b2..85a1e533715 100644
--- a/libavformat/assenc.c
+++ b/libavformat/assenc.c
@@ -22,6 +22,7 @@
 #include "libavutil/avstring.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 #include "libavutil/opt.h"
 
@@ -226,16 +227,16 @@ static const AVClass ass_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_ass_muxer = {
-    .name           = "ass",
-    .long_name      = NULL_IF_CONFIG_SMALL("SSA (SubStation Alpha) subtitle"),
-    .mime_type      = "text/x-ass",
-    .extensions     = "ass,ssa",
+const FFOutputFormat ff_ass_muxer = {
+    .p.name           = "ass",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("SSA (SubStation Alpha) subtitle"),
+    .p.mime_type      = "text/x-ass",
+    .p.extensions     = "ass,ssa",
+    .p.subtitle_codec = AV_CODEC_ID_ASS,
+    .p.flags          = AVFMT_GLOBALHEADER | AVFMT_NOTIMESTAMPS | AVFMT_TS_NONSTRICT,
+    .p.priv_class     = &ass_class,
     .priv_data_size = sizeof(ASSContext),
-    .subtitle_codec = AV_CODEC_ID_ASS,
     .write_header   = write_header,
     .write_packet   = write_packet,
     .write_trailer  = write_trailer,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_NOTIMESTAMPS | AVFMT_TS_NONSTRICT,
-    .priv_class     = &ass_class,
 };
diff --git a/libavformat/astenc.c b/libavformat/astenc.c
index b29cfc4aaf0..9dd388040f9 100644
--- a/libavformat/astenc.c
+++ b/libavformat/astenc.c
@@ -23,6 +23,7 @@
 #include "avio_internal.h"
 #include "internal.h"
 #include "ast.h"
+#include "mux.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
 
@@ -194,16 +195,16 @@ static const AVClass ast_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_ast_muxer = {
-    .name              = "ast",
-    .long_name         = NULL_IF_CONFIG_SMALL("AST (Audio Stream)"),
-    .extensions        = "ast",
+const FFOutputFormat ff_ast_muxer = {
+    .p.name            = "ast",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("AST (Audio Stream)"),
+    .p.extensions      = "ast",
     .priv_data_size    = sizeof(ASTMuxContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16BE_PLANAR,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16BE_PLANAR,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .write_header      = ast_write_header,
     .write_packet      = ast_write_packet,
     .write_trailer     = ast_write_trailer,
-    .priv_class        = &ast_muxer_class,
-    .codec_tag         = ff_ast_codec_tags_list,
+    .p.priv_class      = &ast_muxer_class,
+    .p.codec_tag       = ff_ast_codec_tags_list,
 };
diff --git a/libavformat/au.c b/libavformat/au.c
index f7c47d53331..3bf21502584 100644
--- a/libavformat/au.c
+++ b/libavformat/au.c
@@ -33,6 +33,7 @@
 #include "avformat.h"
 #include "internal.h"
 #include "avio_internal.h"
+#include "mux.h"
 #include "pcm.h"
 #include "libavutil/avassert.h"
 
@@ -331,19 +332,19 @@ static int au_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_au_muxer = {
-    .name          = "au",
-    .long_name     = NULL_IF_CONFIG_SMALL("Sun AU"),
-    .mime_type     = "audio/basic",
-    .extensions    = "au",
+const FFOutputFormat ff_au_muxer = {
+    .p.name         = "au",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Sun AU"),
+    .p.mime_type    = "audio/basic",
+    .p.extensions   = "au",
+    .p.codec_tag    = au_codec_tags,
+    .p.audio_codec  = AV_CODEC_ID_PCM_S16BE,
+    .p.video_codec  = AV_CODEC_ID_NONE,
+    .p.flags        = AVFMT_NOTIMESTAMPS,
     .priv_data_size = sizeof(AUContext),
-    .audio_codec   = AV_CODEC_ID_PCM_S16BE,
-    .video_codec   = AV_CODEC_ID_NONE,
     .write_header  = au_write_header,
     .write_packet  = ff_raw_write_packet,
     .write_trailer = au_write_trailer,
-    .codec_tag     = au_codec_tags,
-    .flags         = AVFMT_NOTIMESTAMPS,
 };
 
 #endif /* CONFIG_AU_MUXER */
diff --git a/libavformat/avformat.c b/libavformat/avformat.c
index 19c72194714..88ff46a5744 100644
--- a/libavformat/avformat.c
+++ b/libavformat/avformat.c
@@ -35,6 +35,7 @@
 #include "avformat.h"
 #include "avio.h"
 #include "demux.h"
+#include "mux.h"
 #include "internal.h"
 
 void ff_free_stream(AVStream **pst)
@@ -100,8 +101,8 @@ void avformat_free_context(AVFormatContext *s)
         return;
     si = ffformatcontext(s);
 
-    if (s->oformat && s->oformat->deinit && si->initialized)
-        s->oformat->deinit(s);
+    if (s->oformat && ffofmt(s->oformat)->deinit && si->initialized)
+        ffofmt(s->oformat)->deinit(s);
 
     av_opt_free(s);
     if (s->iformat && s->iformat->priv_class && s->priv_data)
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index a69ee1c575c..49e50a5120a 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -328,10 +328,8 @@
 #endif
 
 struct AVFormatContext;
-struct AVStream;
 
 struct AVDeviceInfoList;
-struct AVDeviceCapabilitiesQuery;
 
 /**
  * @defgroup metadata_api Public Metadata API
@@ -536,113 +534,6 @@ typedef struct AVOutputFormat {
 
 
     const AVClass *priv_class; ///< AVClass for the private context
-
-    /*****************************************************************
-     * No fields below this line are part of the public API. They
-     * may not be used outside of libavformat and can be changed and
-     * removed at will.
-     * New public fields should be added right above.
-     *****************************************************************
-     */
-    /**
-     * size of private data so that it can be allocated in the wrapper
-     */
-    int priv_data_size;
-
-    /**
-     * Internal flags. See FF_FMT_FLAG_* in internal.h.
-     */
-    int flags_internal;
-
-    int (*write_header)(struct AVFormatContext *);
-    /**
-     * Write a packet. If AVFMT_ALLOW_FLUSH is set in flags,
-     * pkt can be NULL in order to flush data buffered in the muxer.
-     * When flushing, return 0 if there still is more data to flush,
-     * or 1 if everything was flushed and there is no more buffered
-     * data.
-     */
-    int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
-    int (*write_trailer)(struct AVFormatContext *);
-    /**
-     * A format-specific function for interleavement.
-     * If unset, packets will be interleaved by dts.
-     *
-     * @param s           An AVFormatContext for output. pkt will be added to
-     *                    resp. taken from its packet buffer.
-     * @param[in,out] pkt A packet to be interleaved if has_packet is set;
-     *                    also used to return packets. If no packet is returned
-     *                    (e.g. on error), pkt is blank on return.
-     * @param flush       1 if no further packets are available as input and
-     *                    all remaining packets should be output.
-     * @param has_packet  If set, pkt contains a packet to be interleaved
-     *                    on input; otherwise pkt is blank on input.
-     * @return 1 if a packet was output, 0 if no packet could be output,
-     *         < 0 if an error occurred
-     */
-    int (*interleave_packet)(struct AVFormatContext *s, AVPacket *pkt,
-                             int flush, int has_packet);
-    /**
-     * Test if the given codec can be stored in this container.
-     *
-     * @return 1 if the codec is supported, 0 if it is not.
-     *         A negative number if unknown.
-     *         MKTAG('A', 'P', 'I', 'C') if the codec is only supported as AV_DISPOSITION_ATTACHED_PIC
-     */
-    int (*query_codec)(enum AVCodecID id, int std_compliance);
-
-    void (*get_output_timestamp)(struct AVFormatContext *s, int stream,
-                                 int64_t *dts, int64_t *wall);
-    /**
-     * Allows sending messages from application to device.
-     */
-    int (*control_message)(struct AVFormatContext *s, int type,
-                           void *data, size_t data_size);
-
-    /**
-     * Write an uncoded AVFrame.
-     *
-     * See av_write_uncoded_frame() for details.
-     *
-     * The library will free *frame afterwards, but the muxer can prevent it
-     * by setting the pointer to NULL.
-     */
-    int (*write_uncoded_frame)(struct AVFormatContext *, int stream_index,
-                               AVFrame **frame, unsigned flags);
-    /**
-     * Returns device list with it properties.
-     * @see avdevice_list_devices() for more details.
-     */
-    int (*get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list);
-    /**
-     * Initialize format. May allocate data here, and set any AVFormatContext or
-     * AVStream parameters that need to be set before packets are sent.
-     * This method must not write output.
-     *
-     * Return 0 if streams were fully configured, 1 if not, negative AVERROR on failure
-     *
-     * Any allocations made here must be freed in deinit().
-     */
-    int (*init)(struct AVFormatContext *);
-    /**
-     * Deinitialize format. If present, this is called whenever the muxer is being
-     * destroyed, regardless of whether or not the header has been written.
-     *
-     * If a trailer is being written, this is called after write_trailer().
-     *
-     * This is called if init() fails as well.
-     */
-    void (*deinit)(struct AVFormatContext *);
-    /**
-     * Set up any necessary bitstream filtering and extract any extra data needed
-     * for the global header.
-     *
-     * @note pkt might have been directly forwarded by a meta-muxer; therefore
-     *       pkt->stream_index as well as the pkt's timebase might be invalid.
-     * Return 0 if more packets from this stream must be checked; 1 if not.
-     */
-    int (*check_bitstream)(struct AVFormatContext *s, struct AVStream *st,
-                           const AVPacket *pkt);
 } AVOutputFormat;
 /**
  * @}
diff --git a/libavformat/avienc.c b/libavformat/avienc.c
index 14115b3e2b8..a61e5c31095 100644
--- a/libavformat/avienc.c
+++ b/libavformat/avienc.c
@@ -28,6 +28,7 @@
 #include "config_components.h"
 #include "riff.h"
 #include "mpegts.h"
+#include "mux.h"
 #include "rawutils.h"
 #include "libavformat/avlanguage.h"
 #include "libavutil/avstring.h"
@@ -1003,19 +1004,19 @@ static const AVClass avi_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_avi_muxer = {
-    .name           = "avi",
-    .long_name      = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
-    .mime_type      = "video/x-msvideo",
-    .extensions     = "avi",
+const FFOutputFormat ff_avi_muxer = {
+    .p.name         = "avi",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
+    .p.mime_type    = "video/x-msvideo",
+    .p.extensions   = "avi",
     .priv_data_size = sizeof(AVIContext),
-    .audio_codec    = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
-    .video_codec    = AV_CODEC_ID_MPEG4,
+    .p.audio_codec  = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
+    .p.video_codec  = AV_CODEC_ID_MPEG4,
     .init           = avi_init,
     .deinit         = avi_deinit,
     .write_header   = avi_write_header,
     .write_packet   = avi_write_packet,
     .write_trailer  = avi_write_trailer,
-    .codec_tag      = ff_riff_codec_tags_list,
-    .priv_class     = &avi_muxer_class,
+    .p.codec_tag    = ff_riff_codec_tags_list,
+    .p.priv_class   = &avi_muxer_class,
 };
diff --git a/libavformat/bit.c b/libavformat/bit.c
index 9efb4ac0708..c3b9cf4d3dc 100644
--- a/libavformat/bit.c
+++ b/libavformat/bit.c
@@ -23,6 +23,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavcodec/get_bits.h"
 #include "libavcodec/put_bits.h"
 
@@ -158,13 +159,13 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_bit_muxer = {
-    .name         = "bit",
-    .long_name    = NULL_IF_CONFIG_SMALL("G.729 BIT file format"),
-    .mime_type    = "audio/bit",
-    .extensions   = "bit",
-    .audio_codec  = AV_CODEC_ID_G729,
-    .video_codec  = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_bit_muxer = {
+    .p.name         = "bit",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("G.729 BIT file format"),
+    .p.mime_type    = "audio/bit",
+    .p.extensions   = "bit",
+    .p.audio_codec  = AV_CODEC_ID_G729,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header = write_header,
     .write_packet = write_packet,
 };
diff --git a/libavformat/cafenc.c b/libavformat/cafenc.c
index b8317cd5edc..67be59806c0 100644
--- a/libavformat/cafenc.c
+++ b/libavformat/cafenc.c
@@ -276,16 +276,16 @@ static int caf_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_caf_muxer = {
-    .name           = "caf",
-    .long_name      = NULL_IF_CONFIG_SMALL("Apple CAF (Core Audio Format)"),
-    .mime_type      = "audio/x-caf",
-    .extensions     = "caf",
+const FFOutputFormat ff_caf_muxer = {
+    .p.name         = "caf",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Apple CAF (Core Audio Format)"),
+    .p.mime_type    = "audio/x-caf",
+    .p.extensions   = "caf",
     .priv_data_size = sizeof(CAFContext),
-    .audio_codec    = AV_CODEC_ID_PCM_S16BE,
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_CODEC_ID_PCM_S16BE,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = caf_write_header,
     .write_packet   = caf_write_packet,
     .write_trailer  = caf_write_trailer,
-    .codec_tag      = ff_caf_codec_tags_list,
+    .p.codec_tag    = ff_caf_codec_tags_list,
 };
diff --git a/libavformat/chromaprint.c b/libavformat/chromaprint.c
index 3953a5ced30..9e5fd780c1e 100644
--- a/libavformat/chromaprint.c
+++ b/libavformat/chromaprint.c
@@ -21,6 +21,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/opt.h"
 #include <chromaprint.h>
 
@@ -176,15 +177,15 @@ static const AVClass chromaprint_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_chromaprint_muxer = {
-    .name              = "chromaprint",
-    .long_name         = NULL_IF_CONFIG_SMALL("Chromaprint"),
+const FFOutputFormat ff_chromaprint_muxer = {
+    .p.name            = "chromaprint",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Chromaprint"),
     .priv_data_size    = sizeof(ChromaprintMuxContext),
-    .audio_codec       = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
+    .p.audio_codec     = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
     .write_header      = write_header,
     .write_packet      = write_packet,
     .write_trailer     = write_trailer,
     .deinit            = deinit,
-    .flags             = AVFMT_NOTIMESTAMPS,
-    .priv_class        = &chromaprint_class,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
+    .p.priv_class      = &chromaprint_class,
 };
diff --git a/libavformat/codec2.c b/libavformat/codec2.c
index 400c5acbdb6..f0f7b892533 100644
--- a/libavformat/codec2.c
+++ b/libavformat/codec2.c
@@ -28,6 +28,7 @@
 #include "avio_internal.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "pcm.h"
 
@@ -309,16 +310,16 @@ const AVInputFormat ff_codec2_demuxer = {
 #endif
 
 #if CONFIG_CODEC2_MUXER
-const AVOutputFormat ff_codec2_muxer = {
-    .name           = "codec2",
-    .long_name      = NULL_IF_CONFIG_SMALL("codec2 .c2 muxer"),
+const FFOutputFormat ff_codec2_muxer = {
+    .p.name         = "codec2",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("codec2 .c2 muxer"),
+    .p.extensions   = "c2",
+    .p.audio_codec  = AV_CODEC_ID_CODEC2,
+    .p.video_codec  = AV_CODEC_ID_NONE,
+    .p.flags        = AVFMT_NOTIMESTAMPS,
     .priv_data_size = sizeof(Codec2Context),
-    .extensions     = "c2",
-    .audio_codec    = AV_CODEC_ID_CODEC2,
-    .video_codec    = AV_CODEC_ID_NONE,
     .write_header   = codec2_write_header,
     .write_packet   = ff_raw_write_packet,
-    .flags          = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
diff --git a/libavformat/crcenc.c b/libavformat/crcenc.c
index 9f40dd4ec0d..1779bdd91c0 100644
--- a/libavformat/crcenc.c
+++ b/libavformat/crcenc.c
@@ -23,6 +23,7 @@
 
 #include "libavutil/adler32.h"
 #include "avformat.h"
+#include "mux.h"
 
 typedef struct CRCState {
     uint32_t crcval;
@@ -54,14 +55,14 @@ static int crc_write_trailer(struct AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_crc_muxer = {
-    .name              = "crc",
-    .long_name         = NULL_IF_CONFIG_SMALL("CRC testing"),
+const FFOutputFormat ff_crc_muxer = {
+    .p.name            = "crc",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("CRC testing"),
     .priv_data_size    = sizeof(CRCState),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .init              = crc_init,
     .write_packet      = crc_write_packet,
     .write_trailer     = crc_write_trailer,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
index 8e725a0d3fb..52865eacb51 100644
--- a/libavformat/dashenc.c
+++ b/libavformat/dashenc.c
@@ -2346,10 +2346,10 @@ static int dash_check_bitstream(AVFormatContext *s, AVStream *st,
     DASHContext *c = s->priv_data;
     OutputStream *os = &c->streams[st->index];
     AVFormatContext *oc = os->ctx;
-    if (oc->oformat->check_bitstream) {
+    if (ffofmt(oc->oformat)->check_bitstream) {
         AVStream *const ost = oc->streams[0];
         int ret;
-        ret = oc->oformat->check_bitstream(oc, ost, avpkt);
+        ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, avpkt);
         if (ret == 1) {
             FFStream *const  sti = ffstream(st);
             FFStream *const osti = ffstream(ost);
@@ -2419,19 +2419,19 @@ static const AVClass dash_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_dash_muxer = {
-    .name           = "dash",
-    .long_name      = NULL_IF_CONFIG_SMALL("DASH Muxer"),
-    .extensions     = "mpd",
+const FFOutputFormat ff_dash_muxer = {
+    .p.name          = "dash",
+    .p.long_name     = NULL_IF_CONFIG_SMALL("DASH Muxer"),
+    .p.extensions    = "mpd",
+    .p.audio_codec   = AV_CODEC_ID_AAC,
+    .p.video_codec   = AV_CODEC_ID_H264,
+    .p.flags         = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
+    .p.priv_class    = &dash_class,
     .priv_data_size = sizeof(DASHContext),
-    .audio_codec    = AV_CODEC_ID_AAC,
-    .video_codec    = AV_CODEC_ID_H264,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
     .init           = dash_init,
     .write_header   = dash_write_header,
     .write_packet   = dash_write_packet,
     .write_trailer  = dash_write_trailer,
     .deinit         = dash_free,
     .check_bitstream = dash_check_bitstream,
-    .priv_class     = &dash_class,
 };
diff --git a/libavformat/daudenc.c b/libavformat/daudenc.c
index 2e252449e92..2d84b16650e 100644
--- a/libavformat/daudenc.c
+++ b/libavformat/daudenc.c
@@ -20,6 +20,7 @@
  */
 
 #include "avformat.h"
+#include "mux.h"
 
 static int daud_init(struct AVFormatContext *s)
 {
@@ -42,13 +43,13 @@ static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_daud_muxer = {
-    .name         = "daud",
-    .long_name    = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
-    .extensions   = "302",
-    .audio_codec  = AV_CODEC_ID_PCM_S24DAUD,
-    .video_codec  = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_daud_muxer = {
+    .p.name        = "daud",
+    .p.long_name   = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
+    .p.extensions  = "302",
+    .p.audio_codec = AV_CODEC_ID_PCM_S24DAUD,
+    .p.video_codec = AV_CODEC_ID_NONE,
+    .p.flags       = AVFMT_NOTIMESTAMPS,
     .init         = daud_init,
     .write_packet = daud_write_packet,
-    .flags        = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/dvenc.c b/libavformat/dvenc.c
index 11947aa4934..29d2dc47acf 100644
--- a/libavformat/dvenc.c
+++ b/libavformat/dvenc.c
@@ -442,13 +442,13 @@ static void dv_deinit(AVFormatContext *s)
         av_fifo_freep2(&c->audio_data[i]);
 }
 
-const AVOutputFormat ff_dv_muxer = {
-    .name              = "dv",
-    .long_name         = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
-    .extensions        = "dv",
+const FFOutputFormat ff_dv_muxer = {
+    .p.name            = "dv",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
+    .p.extensions      = "dv",
     .priv_data_size    = sizeof(DVMuxContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_DVVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_DVVIDEO,
     .write_header      = dv_write_header,
     .write_packet      = dv_write_packet,
     .deinit            = dv_deinit,
diff --git a/libavformat/ffmetaenc.c b/libavformat/ffmetaenc.c
index f27ac1ac502..ef076407b5d 100644
--- a/libavformat/ffmetaenc.c
+++ b/libavformat/ffmetaenc.c
@@ -23,6 +23,7 @@
 
 #include "avformat.h"
 #include "ffmeta.h"
+#include "mux.h"
 #include "libavutil/dict.h"
 
 
@@ -87,12 +88,12 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_ffmetadata_muxer = {
-    .name          = "ffmetadata",
-    .long_name     = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"),
-    .extensions    = "ffmeta",
+const FFOutputFormat ff_ffmetadata_muxer = {
+    .p.name        = "ffmetadata",
+    .p.long_name   = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"),
+    .p.extensions  = "ffmeta",
     .write_header  = write_header,
     .write_packet  = write_packet,
     .write_trailer = write_trailer,
-    .flags         = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS,
+    .p.flags       = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS,
 };
diff --git a/libavformat/fifo.c b/libavformat/fifo.c
index c125a97b0dd..ebadeef645d 100644
--- a/libavformat/fifo.c
+++ b/libavformat/fifo.c
@@ -707,15 +707,15 @@ static const AVClass fifo_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_fifo_muxer = {
-    .name           = "fifo",
-    .long_name      = NULL_IF_CONFIG_SMALL("FIFO queue pseudo-muxer"),
+const FFOutputFormat ff_fifo_muxer = {
+    .p.name         = "fifo",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("FIFO queue pseudo-muxer"),
+    .p.priv_class   = &fifo_muxer_class,
+    .p.flags        = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
     .priv_data_size = sizeof(FifoContext),
     .init           = fifo_init,
     .write_header   = fifo_write_header,
     .write_packet   = fifo_write_packet,
     .write_trailer  = fifo_write_trailer,
     .deinit         = fifo_deinit,
-    .priv_class     = &fifo_muxer_class,
-    .flags          = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
 };
diff --git a/libavformat/fifo_test.c b/libavformat/fifo_test.c
index 80c0c846129..0f12d88b0fd 100644
--- a/libavformat/fifo_test.c
+++ b/libavformat/fifo_test.c
@@ -25,6 +25,7 @@
 #include "libavutil/time.h"
 
 #include "avformat.h"
+#include "mux.h"
 #include "url.h"
 
 /* Implementation of mock muxer to simulate real muxer failures */
@@ -137,15 +138,15 @@ static const AVClass failing_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_fifo_test_muxer = {
-    .name           = "fifo_test",
-    .long_name      = NULL_IF_CONFIG_SMALL("Fifo test muxer"),
+const FFOutputFormat ff_fifo_test_muxer = {
+    .p.name         = "fifo_test",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Fifo test muxer"),
     .priv_data_size = sizeof(FailingMuxerContext),
     .write_header   = failing_write_header,
     .write_packet   = failing_write_packet,
     .write_trailer  = failing_write_trailer,
     .deinit         = failing_deinit,
-    .priv_class     = &failing_muxer_class,
-    .flags          = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
+    .p.priv_class   = &failing_muxer_class,
+    .p.flags        = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
 };
 
diff --git a/libavformat/filmstripenc.c b/libavformat/filmstripenc.c
index ebb7294175f..9033dba6925 100644
--- a/libavformat/filmstripenc.c
+++ b/libavformat/filmstripenc.c
@@ -27,6 +27,7 @@
 #include "libavutil/intreadwrite.h"
 #include "avformat.h"
 #include "avio_internal.h"
+#include "mux.h"
 #include "rawenc.h"
 
 #define RAND_TAG MKBETAG('R','a','n','d')
@@ -59,12 +60,12 @@ static int write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_filmstrip_muxer = {
-    .name              = "filmstrip",
-    .long_name         = NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
-    .extensions        = "flm",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+const FFOutputFormat ff_filmstrip_muxer = {
+    .p.name            = "filmstrip",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
+    .p.extensions      = "flm",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .write_header      = write_header,
     .write_packet      = ff_raw_write_packet,
     .write_trailer     = write_trailer,
diff --git a/libavformat/fitsenc.c b/libavformat/fitsenc.c
index 37ee10bb139..1df7e2bcf2b 100644
--- a/libavformat/fitsenc.c
+++ b/libavformat/fitsenc.c
@@ -26,6 +26,7 @@
 
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 
 typedef struct FITSContext {
     int first_image;
@@ -191,13 +192,13 @@ static int fits_write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_fits_muxer = {
-    .name         = "fits",
-    .long_name    = NULL_IF_CONFIG_SMALL("Flexible Image Transport System"),
-    .extensions   = "fits",
+const FFOutputFormat ff_fits_muxer = {
+    .p.name         = "fits",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Flexible Image Transport System"),
+    .p.extensions   = "fits",
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_FITS,
     .priv_data_size = sizeof(FITSContext),
-    .audio_codec  = AV_CODEC_ID_NONE,
-    .video_codec  = AV_CODEC_ID_FITS,
     .write_header = fits_write_header,
     .write_packet = fits_write_packet,
 };
diff --git a/libavformat/flacenc.c b/libavformat/flacenc.c
index d7930f4a6e2..a8beec7750b 100644
--- a/libavformat/flacenc.c
+++ b/libavformat/flacenc.c
@@ -30,6 +30,7 @@
 #include "flacenc.h"
 #include "id3v2.h"
 #include "internal.h"
+#include "mux.h"
 #include "version.h"
 #include "vorbiscomment.h"
 
@@ -413,19 +414,19 @@ static const AVClass flac_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_flac_muxer = {
-    .name              = "flac",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw FLAC"),
+const FFOutputFormat ff_flac_muxer = {
+    .p.name            = "flac",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw FLAC"),
     .priv_data_size    = sizeof(FlacMuxerContext),
-    .mime_type         = "audio/x-flac",
-    .extensions        = "flac",
-    .audio_codec       = AV_CODEC_ID_FLAC,
-    .video_codec       = AV_CODEC_ID_PNG,
+    .p.mime_type       = "audio/x-flac",
+    .p.extensions      = "flac",
+    .p.audio_codec     = AV_CODEC_ID_FLAC,
+    .p.video_codec     = AV_CODEC_ID_PNG,
     .init              = flac_init,
     .write_header      = flac_write_header,
     .write_packet      = flac_write_packet,
     .write_trailer     = flac_write_trailer,
     .deinit            = flac_deinit,
-    .flags             = AVFMT_NOTIMESTAMPS,
-    .priv_class        = &flac_muxer_class,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
+    .p.priv_class      = &flac_muxer_class,
 };
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 128ae8ebc0e..81d9b6100da 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -1060,24 +1060,24 @@ static const AVClass flv_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_flv_muxer = {
-    .name           = "flv",
-    .long_name      = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
-    .mime_type      = "video/x-flv",
-    .extensions     = "flv",
+const FFOutputFormat ff_flv_muxer = {
+    .p.name         = "flv",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
+    .p.mime_type    = "video/x-flv",
+    .p.extensions   = "flv",
     .priv_data_size = sizeof(FLVContext),
-    .audio_codec    = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_ADPCM_SWF,
-    .video_codec    = AV_CODEC_ID_FLV1,
+    .p.audio_codec  = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_ADPCM_SWF,
+    .p.video_codec  = AV_CODEC_ID_FLV1,
     .init           = flv_init,
     .write_header   = flv_write_header,
     .write_packet   = flv_write_packet,
     .write_trailer  = flv_write_trailer,
     .deinit         = flv_deinit,
     .check_bitstream= flv_check_bitstream,
-    .codec_tag      = (const AVCodecTag* const []) {
+    .p.codec_tag    = (const AVCodecTag* const []) {
                           flv_video_codec_ids, flv_audio_codec_ids, 0
                       },
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
+    .p.flags        = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
                       AVFMT_TS_NONSTRICT,
-    .priv_class     = &flv_muxer_class,
+    .p.priv_class   = &flv_muxer_class,
 };
diff --git a/libavformat/framecrcenc.c b/libavformat/framecrcenc.c
index ab79903e318..ce306a6c498 100644
--- a/libavformat/framecrcenc.c
+++ b/libavformat/framecrcenc.c
@@ -30,6 +30,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 static int framecrc_write_header(struct AVFormatContext *s)
 {
@@ -69,13 +70,13 @@ static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_framecrc_muxer = {
-    .name              = "framecrc",
-    .long_name         = NULL_IF_CONFIG_SMALL("framecrc testing"),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+const FFOutputFormat ff_framecrc_muxer = {
+    .p.name            = "framecrc",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("framecrc testing"),
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .write_header      = framecrc_write_header,
     .write_packet      = framecrc_write_packet,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                          AVFMT_TS_NEGATIVE,
 };
diff --git a/libavformat/gif.c b/libavformat/gif.c
index b52ff4dd395..bfa7deb598c 100644
--- a/libavformat/gif.c
+++ b/libavformat/gif.c
@@ -23,6 +23,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/log.h"
 #include "libavutil/opt.h"
@@ -202,17 +203,17 @@ static const AVClass gif_muxer_class = {
     .option     = options,
 };
 
-const AVOutputFormat ff_gif_muxer = {
-    .name           = "gif",
-    .long_name      = NULL_IF_CONFIG_SMALL("CompuServe Graphics Interchange Format (GIF)"),
-    .mime_type      = "image/gif",
-    .extensions     = "gif",
+const FFOutputFormat ff_gif_muxer = {
+    .p.name         = "gif",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("CompuServe Graphics Interchange Format (GIF)"),
+    .p.mime_type    = "image/gif",
+    .p.extensions   = "gif",
     .priv_data_size = sizeof(GIFContext),
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_GIF,
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_GIF,
     .write_header   = gif_write_header,
     .write_packet   = gif_write_packet,
     .write_trailer  = gif_write_trailer,
-    .priv_class     = &gif_muxer_class,
-    .flags          = AVFMT_VARIABLE_FPS,
+    .p.priv_class   = &gif_muxer_class,
+    .p.flags        = AVFMT_VARIABLE_FPS,
 };
diff --git a/libavformat/gxfenc.c b/libavformat/gxfenc.c
index 0f971c039a4..74959247229 100644
--- a/libavformat/gxfenc.c
+++ b/libavformat/gxfenc.c
@@ -1009,13 +1009,13 @@ static int gxf_interleave_packet(AVFormatContext *s, AVPacket *pkt,
     return ff_interleave_packet_per_dts(s, pkt, flush, 0);
 }
 
-const AVOutputFormat ff_gxf_muxer = {
-    .name              = "gxf",
-    .long_name         = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"),
-    .extensions        = "gxf",
+const FFOutputFormat ff_gxf_muxer = {
+    .p.name            = "gxf",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"),
+    .p.extensions      = "gxf",
     .priv_data_size    = sizeof(GXFContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .write_header      = gxf_write_header,
     .write_packet      = gxf_write_packet,
     .write_trailer     = gxf_write_trailer,
diff --git a/libavformat/hashenc.c b/libavformat/hashenc.c
index 1aaba0b306e..17ee2f7e9fb 100644
--- a/libavformat/hashenc.c
+++ b/libavformat/hashenc.c
@@ -27,6 +27,7 @@
 #include "libavutil/opt.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 struct HashContext {
     const AVClass *avclass;
@@ -172,19 +173,19 @@ static void hash_free(struct AVFormatContext *s)
 }
 
 #if CONFIG_HASH_MUXER
-const AVOutputFormat ff_hash_muxer = {
-    .name              = "hash",
-    .long_name         = NULL_IF_CONFIG_SMALL("Hash testing"),
+const FFOutputFormat ff_hash_muxer = {
+    .p.name            = "hash",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Hash testing"),
     .priv_data_size    = sizeof(struct HashContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .init              = hash_init,
     .write_packet      = hash_write_packet,
     .write_trailer     = hash_write_trailer,
     .deinit            = hash_free,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                          AVFMT_TS_NEGATIVE,
-    .priv_class        = &hash_streamhashenc_class,
+    .p.priv_class      = &hash_streamhashenc_class,
 };
 #endif
 
@@ -196,36 +197,36 @@ static const AVClass md5enc_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_md5_muxer = {
-    .name              = "md5",
-    .long_name         = NULL_IF_CONFIG_SMALL("MD5 testing"),
+const FFOutputFormat ff_md5_muxer = {
+    .p.name            = "md5",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MD5 testing"),
     .priv_data_size    = sizeof(struct HashContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .init              = hash_init,
     .write_packet      = hash_write_packet,
     .write_trailer     = hash_write_trailer,
     .deinit            = hash_free,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                          AVFMT_TS_NEGATIVE,
-    .priv_class        = &md5enc_class,
+    .p.priv_class      = &md5enc_class,
 };
 #endif
 
 #if CONFIG_STREAMHASH_MUXER
-const AVOutputFormat ff_streamhash_muxer = {
-    .name              = "streamhash",
-    .long_name         = NULL_IF_CONFIG_SMALL("Per-stream hash testing"),
+const FFOutputFormat ff_streamhash_muxer = {
+    .p.name            = "streamhash",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Per-stream hash testing"),
     .priv_data_size    = sizeof(struct HashContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .init              = streamhash_init,
     .write_packet      = hash_write_packet,
     .write_trailer     = hash_write_trailer,
     .deinit            = hash_free,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                          AVFMT_TS_NEGATIVE,
-    .priv_class        = &hash_streamhashenc_class,
+    .p.priv_class      = &hash_streamhashenc_class,
 };
 #endif
 
@@ -324,19 +325,19 @@ static const AVClass framehash_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_framehash_muxer = {
-    .name              = "framehash",
-    .long_name         = NULL_IF_CONFIG_SMALL("Per-frame hash testing"),
+const FFOutputFormat ff_framehash_muxer = {
+    .p.name            = "framehash",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Per-frame hash testing"),
     .priv_data_size    = sizeof(struct HashContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .init              = framehash_init,
     .write_header      = framehash_write_header,
     .write_packet      = framehash_write_packet,
     .deinit            = hash_free,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                          AVFMT_TS_NEGATIVE,
-    .priv_class        = &framehash_class,
+    .p.priv_class      = &framehash_class,
 };
 #endif
 
@@ -348,18 +349,18 @@ static const AVClass framemd5_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_framemd5_muxer = {
-    .name              = "framemd5",
-    .long_name         = NULL_IF_CONFIG_SMALL("Per-frame MD5 testing"),
+const FFOutputFormat ff_framemd5_muxer = {
+    .p.name            = "framemd5",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Per-frame MD5 testing"),
     .priv_data_size    = sizeof(struct HashContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .init              = framehash_init,
     .write_header      = framehash_write_header,
     .write_packet      = framehash_write_packet,
     .deinit            = hash_free,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                          AVFMT_TS_NEGATIVE,
-    .priv_class        = &framemd5_class,
+    .p.priv_class      = &framemd5_class,
 };
 #endif
diff --git a/libavformat/hdsenc.c b/libavformat/hdsenc.c
index a8f340ac460..080a873ee8a 100644
--- a/libavformat/hdsenc.c
+++ b/libavformat/hdsenc.c
@@ -564,16 +564,16 @@ static const AVClass hds_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_hds_muxer = {
-    .name           = "hds",
-    .long_name      = NULL_IF_CONFIG_SMALL("HDS Muxer"),
+const FFOutputFormat ff_hds_muxer = {
+    .p.name         = "hds",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("HDS Muxer"),
+    .p.audio_codec  = AV_CODEC_ID_AAC,
+    .p.video_codec  = AV_CODEC_ID_H264,
+    .p.flags        = AVFMT_GLOBALHEADER | AVFMT_NOFILE,
+    .p.priv_class   = &hds_class,
     .priv_data_size = sizeof(HDSContext),
-    .audio_codec    = AV_CODEC_ID_AAC,
-    .video_codec    = AV_CODEC_ID_H264,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_NOFILE,
     .write_header   = hds_write_header,
     .write_packet   = hds_write_packet,
     .write_trailer  = hds_write_trailer,
     .deinit         = hds_free,
-    .priv_class     = &hds_class,
 };
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index 39df9becc7a..adf06ec7643 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -3183,19 +3183,19 @@ static const AVClass hls_class = {
 };
 
 
-const AVOutputFormat ff_hls_muxer = {
-    .name           = "hls",
-    .long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
-    .extensions     = "m3u8",
+const FFOutputFormat ff_hls_muxer = {
+    .p.name           = "hls",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
+    .p.extensions     = "m3u8",
+    .p.audio_codec    = AV_CODEC_ID_AAC,
+    .p.video_codec    = AV_CODEC_ID_H264,
+    .p.subtitle_codec = AV_CODEC_ID_WEBVTT,
+    .p.flags          = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
+    .p.priv_class     = &hls_class,
     .priv_data_size = sizeof(HLSContext),
-    .audio_codec    = AV_CODEC_ID_AAC,
-    .video_codec    = AV_CODEC_ID_H264,
-    .subtitle_codec = AV_CODEC_ID_WEBVTT,
-    .flags          = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
     .init           = hls_init,
     .write_header   = hls_write_header,
     .write_packet   = hls_write_packet,
     .write_trailer  = hls_write_trailer,
     .deinit         = hls_deinit,
-    .priv_class     = &hls_class,
 };
diff --git a/libavformat/icoenc.c b/libavformat/icoenc.c
index d684f677072..caa3ba4965a 100644
--- a/libavformat/icoenc.c
+++ b/libavformat/icoenc.c
@@ -31,6 +31,7 @@
 
 #include "avformat.h"
 #include "avio_internal.h"
+#include "mux.h"
 
 typedef struct {
     int offset;
@@ -193,17 +194,17 @@ static void ico_deinit(AVFormatContext *s)
     av_freep(&ico->images);
 }
 
-const AVOutputFormat ff_ico_muxer = {
-    .name           = "ico",
-    .long_name      = NULL_IF_CONFIG_SMALL("Microsoft Windows ICO"),
+const FFOutputFormat ff_ico_muxer = {
+    .p.name         = "ico",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Microsoft Windows ICO"),
     .priv_data_size = sizeof(IcoMuxContext),
-    .mime_type      = "image/vnd.microsoft.icon",
-    .extensions     = "ico",
-    .audio_codec    = AV_CODEC_ID_NONE,
-    .video_codec    = AV_CODEC_ID_BMP,
+    .p.mime_type    = "image/vnd.microsoft.icon",
+    .p.extensions   = "ico",
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_BMP,
     .write_header   = ico_write_header,
     .write_packet   = ico_write_packet,
     .write_trailer  = ico_write_trailer,
     .deinit         = ico_deinit,
-    .flags          = AVFMT_NOTIMESTAMPS,
+    .p.flags        = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/idroqenc.c b/libavformat/idroqenc.c
index 57dd7f024ef..9baf9ad1b1b 100644
--- a/libavformat/idroqenc.c
+++ b/libavformat/idroqenc.c
@@ -20,6 +20,7 @@
  */
 
 #include "avformat.h"
+#include "mux.h"
 #include "rawenc.h"
 
 
@@ -59,12 +60,12 @@ static int roq_write_header(struct AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_roq_muxer = {
-    .name         = "roq",
-    .long_name    = NULL_IF_CONFIG_SMALL("raw id RoQ"),
-    .extensions   = "roq",
-    .audio_codec  = AV_CODEC_ID_ROQ_DPCM,
-    .video_codec  = AV_CODEC_ID_ROQ,
+const FFOutputFormat ff_roq_muxer = {
+    .p.name        = "roq",
+    .p.long_name   = NULL_IF_CONFIG_SMALL("raw id RoQ"),
+    .p.extensions  = "roq",
+    .p.audio_codec = AV_CODEC_ID_ROQ_DPCM,
+    .p.video_codec = AV_CODEC_ID_ROQ,
     .write_header = roq_write_header,
     .write_packet = ff_raw_write_packet,
 };
diff --git a/libavformat/ilbc.c b/libavformat/ilbc.c
index 26336ef2ac3..6b5bb33b620 100644
--- a/libavformat/ilbc.c
+++ b/libavformat/ilbc.c
@@ -23,6 +23,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 
 static const char mode20_header[] = "#!iLBC20\n";
@@ -120,14 +121,14 @@ const AVInputFormat ff_ilbc_demuxer = {
 };
 
 #if CONFIG_ILBC_MUXER
-const AVOutputFormat ff_ilbc_muxer = {
-    .name         = "ilbc",
-    .long_name    = NULL_IF_CONFIG_SMALL("iLBC storage"),
-    .mime_type    = "audio/iLBC",
-    .extensions   = "lbc",
-    .audio_codec  = AV_CODEC_ID_ILBC,
+const FFOutputFormat ff_ilbc_muxer = {
+    .p.name         = "ilbc",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("iLBC storage"),
+    .p.mime_type    = "audio/iLBC",
+    .p.extensions   = "lbc",
+    .p.audio_codec  = AV_CODEC_ID_ILBC,
+    .p.flags        = AVFMT_NOTIMESTAMPS,
     .write_header = ilbc_write_header,
     .write_packet = ff_raw_write_packet,
-    .flags        = AVFMT_NOTIMESTAMPS,
 };
 #endif
diff --git a/libavformat/img2enc.c b/libavformat/img2enc.c
index c05f37e22b3..9b8ec06cea1 100644
--- a/libavformat/img2enc.c
+++ b/libavformat/img2enc.c
@@ -33,6 +33,7 @@
 #include "avio_internal.h"
 #include "internal.h"
 #include "img2.h"
+#include "mux.h"
 
 typedef struct VideoMuxData {
     const AVClass *class;  /**< Class for private options. */
@@ -268,30 +269,30 @@ static const AVClass img2mux_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_image2_muxer = {
-    .name           = "image2",
-    .long_name      = NULL_IF_CONFIG_SMALL("image2 sequence"),
-    .extensions     = "bmp,dpx,exr,jls,jpeg,jpg,jxl,ljpg,pam,pbm,pcx,pfm,pgm,pgmyuv,phm,"
+const FFOutputFormat ff_image2_muxer = {
+    .p.name         = "image2",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("image2 sequence"),
+    .p.extensions   = "bmp,dpx,exr,jls,jpeg,jpg,jxl,ljpg,pam,pbm,pcx,pfm,pgm,pgmyuv,phm,"
                       "png,ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,"
                       "im24,sunras,vbn,xbm,xface,pix,y,avif,qoi,hdr,wbmp",
     .priv_data_size = sizeof(VideoMuxData),
-    .video_codec    = AV_CODEC_ID_MJPEG,
+    .p.video_codec  = AV_CODEC_ID_MJPEG,
     .write_header   = write_header,
     .write_packet   = write_packet,
     .query_codec    = query_codec,
-    .flags          = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
-    .priv_class     = &img2mux_class,
+    .p.flags        = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
+    .p.priv_class   = &img2mux_class,
 };
 #endif
 #if CONFIG_IMAGE2PIPE_MUXER
-const AVOutputFormat ff_image2pipe_muxer = {
-    .name           = "image2pipe",
-    .long_name      = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
+const FFOutputFormat ff_image2pipe_muxer = {
+    .p.name         = "image2pipe",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
     .priv_data_size = sizeof(VideoMuxData),
-    .video_codec    = AV_CODEC_ID_MJPEG,
+    .p.video_codec  = AV_CODEC_ID_MJPEG,
     .write_header   = write_header,
     .write_packet   = write_packet_pipe,
     .query_codec    = query_codec,
-    .flags          = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
+    .p.flags        = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
 };
 #endif
diff --git a/libavformat/internal.h b/libavformat/internal.h
index ce837fefc76..f575064e8fb 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -705,6 +705,7 @@ int ff_unlock_avformat(void);
  */
 void ff_format_set_url(AVFormatContext *s, char *url);
 
-void avpriv_register_devices(const AVOutputFormat * const o[], const AVInputFormat * const i[]);
+struct FFOutputFormat;
+void avpriv_register_devices(const struct FFOutputFormat * const o[], const AVInputFormat * const i[]);
 
 #endif /* AVFORMAT_INTERNAL_H */
diff --git a/libavformat/ircamenc.c b/libavformat/ircamenc.c
index df1494b2b8d..ceeab2b305b 100644
--- a/libavformat/ircamenc.c
+++ b/libavformat/ircamenc.c
@@ -23,6 +23,7 @@
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "ircam.h"
 
@@ -50,13 +51,13 @@ static int ircam_write_header(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_ircam_muxer = {
-    .name           = "ircam",
-    .extensions     = "sf,ircam",
-    .long_name      = NULL_IF_CONFIG_SMALL("Berkeley/IRCAM/CARL Sound Format"),
-    .audio_codec    = AV_CODEC_ID_PCM_S16LE,
-    .video_codec    = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_ircam_muxer = {
+    .p.name         = "ircam",
+    .p.extensions   = "sf,ircam",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Berkeley/IRCAM/CARL Sound Format"),
+    .p.audio_codec  = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = ircam_write_header,
     .write_packet   = ff_raw_write_packet,
-    .codec_tag      = (const AVCodecTag *const []){ ff_codec_ircam_le_tags, 0 },
+    .p.codec_tag    = (const AVCodecTag *const []){ ff_codec_ircam_le_tags, 0 },
 };
diff --git a/libavformat/ivfenc.c b/libavformat/ivfenc.c
index ed5ec90ce94..47b4efbcd10 100644
--- a/libavformat/ivfenc.c
+++ b/libavformat/ivfenc.c
@@ -122,16 +122,16 @@ static const AVCodecTag codec_ivf_tags[] = {
     { AV_CODEC_ID_NONE, 0 }
 };
 
-const AVOutputFormat ff_ivf_muxer = {
+const FFOutputFormat ff_ivf_muxer = {
+    .p.name         = "ivf",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("On2 IVF"),
+    .p.extensions   = "ivf",
+    .p.audio_codec  = AV_CODEC_ID_NONE,
+    .p.video_codec  = AV_CODEC_ID_VP8,
+    .p.codec_tag    = (const AVCodecTag* const []){ codec_ivf_tags, 0 },
     .priv_data_size = sizeof(IVFEncContext),
-    .name         = "ivf",
-    .long_name    = NULL_IF_CONFIG_SMALL("On2 IVF"),
-    .extensions   = "ivf",
-    .audio_codec  = AV_CODEC_ID_NONE,
-    .video_codec  = AV_CODEC_ID_VP8,
     .init         = ivf_init,
     .write_header = ivf_write_header,
     .write_packet = ivf_write_packet,
     .write_trailer = ivf_write_trailer,
-    .codec_tag    = (const AVCodecTag* const []){ codec_ivf_tags, 0 },
 };
diff --git a/libavformat/jacosubenc.c b/libavformat/jacosubenc.c
index f0548bb2820..fa0f9fdaa2a 100644
--- a/libavformat/jacosubenc.c
+++ b/libavformat/jacosubenc.c
@@ -17,6 +17,7 @@
  */
 
 #include "avformat.h"
+#include "mux.h"
 #include "rawenc.h"
 
 static int jacosub_write_header(AVFormatContext *s)
@@ -29,13 +30,13 @@ static int jacosub_write_header(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_jacosub_muxer = {
-    .name           = "jacosub",
-    .long_name      = NULL_IF_CONFIG_SMALL("JACOsub subtitle format"),
-    .mime_type      = "text/x-jacosub",
-    .extensions     = "jss,js",
+const FFOutputFormat ff_jacosub_muxer = {
+    .p.name           = "jacosub",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("JACOsub subtitle format"),
+    .p.mime_type      = "text/x-jacosub",
+    .p.extensions     = "jss,js",
+    .p.flags          = AVFMT_TS_NONSTRICT,
+    .p.subtitle_codec = AV_CODEC_ID_JACOSUB,
     .write_header   = jacosub_write_header,
     .write_packet   = ff_raw_write_packet,
-    .flags          = AVFMT_TS_NONSTRICT,
-    .subtitle_codec = AV_CODEC_ID_JACOSUB,
 };
diff --git a/libavformat/kvag.c b/libavformat/kvag.c
index 7c3816ab828..9487e7dd0eb 100644
--- a/libavformat/kvag.c
+++ b/libavformat/kvag.c
@@ -26,6 +26,7 @@
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "libavutil/intreadwrite.h"
 
@@ -188,12 +189,12 @@ static int kvag_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_kvag_muxer = {
-    .name           = "kvag",
-    .long_name      = NULL_IF_CONFIG_SMALL("Simon & Schuster Interactive VAG"),
-    .extensions     = "vag",
-    .audio_codec    = AV_CODEC_ID_ADPCM_IMA_SSI,
-    .video_codec    = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_kvag_muxer = {
+    .p.name         = "kvag",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Simon & Schuster Interactive VAG"),
+    .p.extensions   = "vag",
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_IMA_SSI,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .init           = kvag_write_init,
     .write_header   = kvag_write_header,
     .write_packet   = ff_raw_write_packet,
diff --git a/libavformat/latmenc.c b/libavformat/latmenc.c
index 6fd36d1484f..8eec632c546 100644
--- a/libavformat/latmenc.c
+++ b/libavformat/latmenc.c
@@ -260,17 +260,17 @@ static int latm_check_bitstream(AVFormatContext *s, AVStream *st,
     return ret;
 }
 
-const AVOutputFormat ff_latm_muxer = {
-    .name           = "latm",
-    .long_name      = NULL_IF_CONFIG_SMALL("LOAS/LATM"),
-    .mime_type      = "audio/MP4A-LATM",
-    .extensions     = "latm,loas",
+const FFOutputFormat ff_latm_muxer = {
+    .p.name         = "latm",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("LOAS/LATM"),
+    .p.mime_type    = "audio/MP4A-LATM",
+    .p.extensions   = "latm,loas",
     .priv_data_size = sizeof(LATMContext),
-    .audio_codec    = AV_CODEC_ID_AAC,
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_CODEC_ID_AAC,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = latm_write_header,
     .write_packet   = latm_write_packet,
-    .priv_class     = &latm_muxer_class,
+    .p.priv_class   = &latm_muxer_class,
     .check_bitstream= latm_check_bitstream,
-    .flags          = AVFMT_NOTIMESTAMPS,
+    .p.flags        = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/lrcenc.c b/libavformat/lrcenc.c
index 2d6ca33e380..d66be9a8faa 100644
--- a/libavformat/lrcenc.c
+++ b/libavformat/lrcenc.c
@@ -125,14 +125,14 @@ static int lrc_write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_lrc_muxer = {
-    .name           = "lrc",
-    .long_name      = NULL_IF_CONFIG_SMALL("LRC lyrics"),
-    .extensions     = "lrc",
+const FFOutputFormat ff_lrc_muxer = {
+    .p.name           = "lrc",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("LRC lyrics"),
+    .p.extensions     = "lrc",
+    .p.flags          = AVFMT_VARIABLE_FPS | AVFMT_GLOBALHEADER |
+                        AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
+    .p.subtitle_codec = AV_CODEC_ID_SUBRIP,
     .priv_data_size = 0,
     .write_header   = lrc_write_header,
     .write_packet   = lrc_write_packet,
-    .flags          = AVFMT_VARIABLE_FPS | AVFMT_GLOBALHEADER |
-                      AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
-    .subtitle_codec = AV_CODEC_ID_SUBRIP
 };
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 2deb4284e84..113541bd9a2 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -3321,31 +3321,31 @@ static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
     return 0;
 }
 
-const AVOutputFormat ff_matroska_muxer = {
-    .name              = "matroska",
-    .long_name         = NULL_IF_CONFIG_SMALL("Matroska"),
-    .mime_type         = "video/x-matroska",
-    .extensions        = "mkv",
+const FFOutputFormat ff_matroska_muxer = {
+    .p.name            = "matroska",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Matroska"),
+    .p.mime_type       = "video/x-matroska",
+    .p.extensions      = "mkv",
     .priv_data_size    = sizeof(MatroskaMuxContext),
-    .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
+    .p.audio_codec     = CONFIG_LIBVORBIS_ENCODER ?
                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
-    .video_codec       = CONFIG_LIBX264_ENCODER ?
+    .p.video_codec     = CONFIG_LIBX264_ENCODER ?
                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
     .init              = mkv_init,
     .deinit            = mkv_deinit,
     .write_header      = mkv_write_header,
     .write_packet      = mkv_write_flush_packet,
     .write_trailer     = mkv_write_trailer,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
                          AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
-    .codec_tag         = (const AVCodecTag* const []){
+    .p.codec_tag       = (const AVCodecTag* const []){
          ff_codec_bmp_tags, ff_codec_wav_tags,
          additional_audio_tags, additional_video_tags, additional_subtitle_tags, 0
     },
-    .subtitle_codec    = AV_CODEC_ID_ASS,
+    .p.subtitle_codec  = AV_CODEC_ID_ASS,
     .query_codec       = mkv_query_codec,
     .check_bitstream   = mkv_check_bitstream,
-    .priv_class        = &matroska_webm_class,
+    .p.priv_class      = &matroska_webm_class,
 };
 #endif
 
@@ -3359,15 +3359,15 @@ static int webm_query_codec(enum AVCodecID codec_id, int std_compliance)
     return 0;
 }
 
-const AVOutputFormat ff_webm_muxer = {
-    .name              = "webm",
-    .long_name         = NULL_IF_CONFIG_SMALL("WebM"),
-    .mime_type         = "video/webm",
-    .extensions        = "webm",
+const FFOutputFormat ff_webm_muxer = {
+    .p.name            = "webm",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("WebM"),
+    .p.mime_type       = "video/webm",
+    .p.extensions      = "webm",
     .priv_data_size    = sizeof(MatroskaMuxContext),
-    .audio_codec       = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
-    .video_codec       = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
-    .subtitle_codec    = AV_CODEC_ID_WEBVTT,
+    .p.audio_codec     = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
+    .p.video_codec     = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
+    .p.subtitle_codec  = AV_CODEC_ID_WEBVTT,
     .init              = mkv_init,
     .deinit            = mkv_deinit,
     .write_header      = mkv_write_header,
@@ -3375,33 +3375,33 @@ const AVOutputFormat ff_webm_muxer = {
     .write_trailer     = mkv_write_trailer,
     .query_codec       = webm_query_codec,
     .check_bitstream   = mkv_check_bitstream,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
                          AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
-    .priv_class        = &matroska_webm_class,
+    .p.priv_class      = &matroska_webm_class,
 };
 #endif
 
 #if CONFIG_MATROSKA_AUDIO_MUXER
-const AVOutputFormat ff_matroska_audio_muxer = {
-    .name              = "matroska",
-    .long_name         = NULL_IF_CONFIG_SMALL("Matroska Audio"),
-    .mime_type         = "audio/x-matroska",
-    .extensions        = "mka",
+const FFOutputFormat ff_matroska_audio_muxer = {
+    .p.name            = "matroska",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Matroska Audio"),
+    .p.mime_type       = "audio/x-matroska",
+    .p.extensions      = "mka",
     .priv_data_size    = sizeof(MatroskaMuxContext),
-    .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
+    .p.audio_codec     = CONFIG_LIBVORBIS_ENCODER ?
                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = mkv_init,
     .deinit            = mkv_deinit,
     .write_header      = mkv_write_header,
     .write_packet      = mkv_write_flush_packet,
     .write_trailer     = mkv_write_trailer,
     .check_bitstream   = mkv_check_bitstream,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT |
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT |
                          AVFMT_ALLOW_FLUSH,
-    .codec_tag         = (const AVCodecTag* const []){
+    .p.codec_tag       = (const AVCodecTag* const []){
         ff_codec_wav_tags, additional_audio_tags, 0
     },
-    .priv_class        = &matroska_webm_class,
+    .p.priv_class      = &matroska_webm_class,
 };
 #endif
diff --git a/libavformat/microdvdenc.c b/libavformat/microdvdenc.c
index 4db5e701619..950309981bb 100644
--- a/libavformat/microdvdenc.c
+++ b/libavformat/microdvdenc.c
@@ -22,6 +22,7 @@
 #include <inttypes.h>
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 static int microdvd_write_header(struct AVFormatContext *s)
 {
@@ -55,13 +56,13 @@ static int microdvd_write_packet(AVFormatContext *avf, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_microdvd_muxer = {
-    .name           = "microdvd",
-    .long_name      = NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
-    .mime_type      = "text/x-microdvd",
-    .extensions     = "sub",
+const FFOutputFormat ff_microdvd_muxer = {
+    .p.name           = "microdvd",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
+    .p.mime_type      = "text/x-microdvd",
+    .p.extensions     = "sub",
+    .p.flags          = AVFMT_NOTIMESTAMPS,
+    .p.subtitle_codec = AV_CODEC_ID_MICRODVD,
     .write_header   = microdvd_write_header,
     .write_packet   = microdvd_write_packet,
-    .flags          = AVFMT_NOTIMESTAMPS,
-    .subtitle_codec = AV_CODEC_ID_MICRODVD,
 };
diff --git a/libavformat/mkvtimestamp_v2.c b/libavformat/mkvtimestamp_v2.c
index 27c7d7a68be..dde431ab7d0 100644
--- a/libavformat/mkvtimestamp_v2.c
+++ b/libavformat/mkvtimestamp_v2.c
@@ -21,6 +21,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 static int write_header(AVFormatContext *s)
 {
@@ -40,11 +41,11 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_mkvtimestamp_v2_muxer = {
-    .name         = "mkvtimestamp_v2",
-    .long_name    = NULL_IF_CONFIG_SMALL("extract pts as timecode v2 format, as defined by mkvtoolnix"),
-    .audio_codec  = AV_CODEC_ID_NONE,
-    .video_codec  = AV_CODEC_ID_RAWVIDEO,
+const FFOutputFormat ff_mkvtimestamp_v2_muxer = {
+    .p.name        = "mkvtimestamp_v2",
+    .p.long_name   = NULL_IF_CONFIG_SMALL("extract pts as timecode v2 format, as defined by mkvtoolnix"),
+    .p.audio_codec = AV_CODEC_ID_NONE,
+    .p.video_codec = AV_CODEC_ID_RAWVIDEO,
     .write_header = write_header,
     .write_packet = write_packet,
 };
diff --git a/libavformat/mmf.c b/libavformat/mmf.c
index 3f20d5bc0b7..5cac4381f45 100644
--- a/libavformat/mmf.c
+++ b/libavformat/mmf.c
@@ -25,6 +25,7 @@
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include "pcm.h"
 #include "rawenc.h"
 #include "riff.h"
@@ -309,14 +310,14 @@ const AVInputFormat ff_mmf_demuxer = {
 #endif
 
 #if CONFIG_MMF_MUXER
-const AVOutputFormat ff_mmf_muxer = {
-    .name           = "mmf",
-    .long_name      = NULL_IF_CONFIG_SMALL("Yamaha SMAF"),
-    .mime_type      = "application/vnd.smaf",
-    .extensions     = "mmf",
+const FFOutputFormat ff_mmf_muxer = {
+    .p.name         = "mmf",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Yamaha SMAF"),
+    .p.mime_type    = "application/vnd.smaf",
+    .p.extensions   = "mmf",
     .priv_data_size = sizeof(MMFContext),
-    .audio_codec    = AV_CODEC_ID_ADPCM_YAMAHA,
-    .video_codec    = AV_CODEC_ID_NONE,
+    .p.audio_codec  = AV_CODEC_ID_ADPCM_YAMAHA,
+    .p.video_codec  = AV_CODEC_ID_NONE,
     .write_header   = mmf_write_header,
     .write_packet   = ff_raw_write_packet,
     .write_trailer  = mmf_write_trailer,
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 8d31317838b..87ee7a921f0 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -7805,182 +7805,182 @@ static const AVClass mov_avif_muxer_class = {
 #endif
 
 #if CONFIG_MOV_MUXER
-const AVOutputFormat ff_mov_muxer = {
-    .name              = "mov",
-    .long_name         = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
-    .extensions        = "mov",
+const FFOutputFormat ff_mov_muxer = {
+    .p.name            = "mov",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
+    .p.extensions      = "mov",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = CONFIG_LIBX264_ENCODER ?
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = CONFIG_LIBX264_ENCODER ?
                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = (const AVCodecTag* const []){
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = (const AVCodecTag* const []){
         ff_codec_movvideo_tags, ff_codec_movaudio_tags, ff_codec_movsubtitle_tags, 0
     },
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_TGP_MUXER
-const AVOutputFormat ff_tgp_muxer = {
-    .name              = "3gp",
-    .long_name         = NULL_IF_CONFIG_SMALL("3GP (3GPP file format)"),
-    .extensions        = "3gp",
+const FFOutputFormat ff_tgp_muxer = {
+    .p.name            = "3gp",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("3GP (3GPP file format)"),
+    .p.extensions      = "3gp",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AMR_NB,
-    .video_codec       = AV_CODEC_ID_H263,
+    .p.audio_codec     = AV_CODEC_ID_AMR_NB,
+    .p.video_codec     = AV_CODEC_ID_H263,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = codec_3gp_tags_list,
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = codec_3gp_tags_list,
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_MP4_MUXER
-const AVOutputFormat ff_mp4_muxer = {
-    .name              = "mp4",
-    .long_name         = NULL_IF_CONFIG_SMALL("MP4 (MPEG-4 Part 14)"),
-    .mime_type         = "video/mp4",
-    .extensions        = "mp4",
+const FFOutputFormat ff_mp4_muxer = {
+    .p.name            = "mp4",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MP4 (MPEG-4 Part 14)"),
+    .p.mime_type       = "video/mp4",
+    .p.extensions      = "mp4",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = CONFIG_LIBX264_ENCODER ?
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = CONFIG_LIBX264_ENCODER ?
                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = mp4_codec_tags_list,
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = mp4_codec_tags_list,
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_PSP_MUXER
-const AVOutputFormat ff_psp_muxer = {
-    .name              = "psp",
-    .long_name         = NULL_IF_CONFIG_SMALL("PSP MP4 (MPEG-4 Part 14)"),
-    .extensions        = "mp4,psp",
+const FFOutputFormat ff_psp_muxer = {
+    .p.name            = "psp",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("PSP MP4 (MPEG-4 Part 14)"),
+    .p.extensions      = "mp4,psp",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = CONFIG_LIBX264_ENCODER ?
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = CONFIG_LIBX264_ENCODER ?
                          AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = mp4_codec_tags_list,
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = mp4_codec_tags_list,
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_TG2_MUXER
-const AVOutputFormat ff_tg2_muxer = {
-    .name              = "3g2",
-    .long_name         = NULL_IF_CONFIG_SMALL("3GP2 (3GPP2 file format)"),
-    .extensions        = "3g2",
+const FFOutputFormat ff_tg2_muxer = {
+    .p.name            = "3g2",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("3GP2 (3GPP2 file format)"),
+    .p.extensions      = "3g2",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AMR_NB,
-    .video_codec       = AV_CODEC_ID_H263,
+    .p.audio_codec     = AV_CODEC_ID_AMR_NB,
+    .p.video_codec     = AV_CODEC_ID_H263,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = codec_3gp_tags_list,
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = codec_3gp_tags_list,
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_IPOD_MUXER
-const AVOutputFormat ff_ipod_muxer = {
-    .name              = "ipod",
-    .long_name         = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 (MPEG-4 Part 14)"),
-    .mime_type         = "video/mp4",
-    .extensions        = "m4v,m4a,m4b",
+const FFOutputFormat ff_ipod_muxer = {
+    .p.name            = "ipod",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 (MPEG-4 Part 14)"),
+    .p.mime_type       = "video/mp4",
+    .p.extensions      = "m4v,m4a,m4b",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_H264,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_H264,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = (const AVCodecTag* const []){ codec_ipod_tags, 0 },
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = (const AVCodecTag* const []){ codec_ipod_tags, 0 },
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_ISMV_MUXER
-const AVOutputFormat ff_ismv_muxer = {
-    .name              = "ismv",
-    .long_name         = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming)"),
-    .mime_type         = "video/mp4",
-    .extensions        = "ismv,isma",
+const FFOutputFormat ff_ismv_muxer = {
+    .p.name            = "ismv",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming)"),
+    .p.mime_type       = "video/mp4",
+    .p.extensions      = "ismv,isma",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_H264,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_H264,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
-    .codec_tag         = (const AVCodecTag* const []){
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.codec_tag       = (const AVCodecTag* const []){
         codec_mp4_tags, codec_ism_tags, 0 },
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_F4V_MUXER
-const AVOutputFormat ff_f4v_muxer = {
-    .name              = "f4v",
-    .long_name         = NULL_IF_CONFIG_SMALL("F4V Adobe Flash Video"),
-    .mime_type         = "application/f4v",
-    .extensions        = "f4v",
+const FFOutputFormat ff_f4v_muxer = {
+    .p.name            = "f4v",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("F4V Adobe Flash Video"),
+    .p.mime_type       = "application/f4v",
+    .p.extensions      = "f4v",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_H264,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_H264,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = mov_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
-    .codec_tag         = (const AVCodecTag* const []){ codec_f4v_tags, 0 },
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
+    .p.codec_tag       = (const AVCodecTag* const []){ codec_f4v_tags, 0 },
     .check_bitstream   = mov_check_bitstream,
-    .priv_class        = &mov_isobmff_muxer_class,
+    .p.priv_class      = &mov_isobmff_muxer_class,
 };
 #endif
 #if CONFIG_AVIF_MUXER
-const AVOutputFormat ff_avif_muxer = {
-    .name              = "avif",
-    .long_name         = NULL_IF_CONFIG_SMALL("AVIF"),
-    .mime_type         = "image/avif",
-    .extensions        = "avif",
+const FFOutputFormat ff_avif_muxer = {
+    .p.name            = "avif",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("AVIF"),
+    .p.mime_type       = "image/avif",
+    .p.extensions      = "avif",
     .priv_data_size    = sizeof(MOVMuxContext),
-    .video_codec       = AV_CODEC_ID_AV1,
+    .p.video_codec     = AV_CODEC_ID_AV1,
     .init              = mov_init,
     .write_header      = mov_write_header,
     .write_packet      = mov_write_packet,
     .write_trailer     = avif_write_trailer,
     .deinit            = mov_free,
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
-    .codec_tag         = codec_avif_tags_list,
-    .priv_class        = &mov_avif_muxer_class,
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
+    .p.codec_tag       = codec_avif_tags_list,
+    .p.priv_class      = &mov_avif_muxer_class,
 };
 #endif
diff --git a/libavformat/mp3enc.c b/libavformat/mp3enc.c
index 91874fa14ef..5e81f72a59a 100644
--- a/libavformat/mp3enc.c
+++ b/libavformat/mp3enc.c
@@ -23,6 +23,7 @@
 #include "avio_internal.h"
 #include "id3v1.h"
 #include "id3v2.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "libavutil/avstring.h"
 #include "libavcodec/mpegaudio.h"
@@ -636,20 +637,20 @@ static void mp3_deinit(struct AVFormatContext *s)
     av_freep(&mp3->xing_frame);
 }
 
-const AVOutputFormat ff_mp3_muxer = {
-    .name              = "mp3",
-    .long_name         = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
-    .mime_type         = "audio/mpeg",
-    .extensions        = "mp3",
+const FFOutputFormat ff_mp3_muxer = {
+    .p.name            = "mp3",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
+    .p.mime_type       = "audio/mpeg",
+    .p.extensions      = "mp3",
     .priv_data_size    = sizeof(MP3Context),
-    .audio_codec       = AV_CODEC_ID_MP3,
-    .video_codec       = AV_CODEC_ID_PNG,
+    .p.audio_codec     = AV_CODEC_ID_MP3,
+    .p.video_codec     = AV_CODEC_ID_PNG,
     .init              = mp3_init,
     .write_header      = mp3_write_header,
     .write_packet      = mp3_write_packet,
     .write_trailer     = mp3_write_trailer,
     .deinit            = mp3_deinit,
     .query_codec       = query_codec,
-    .flags             = AVFMT_NOTIMESTAMPS,
-    .priv_class        = &mp3_muxer_class,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
+    .p.priv_class      = &mp3_muxer_class,
 };
diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
index 3ab4bd3f9b2..c06e3082963 100644
--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -35,6 +35,7 @@
 #include "avio_internal.h"
 #include "internal.h"
 #include "mpeg.h"
+#include "mux.h"
 
 #define MAX_PAYLOAD_SIZE 4096
 
@@ -86,10 +87,10 @@ typedef struct MpegMuxContext {
     int preload;
 } MpegMuxContext;
 
-extern const AVOutputFormat ff_mpeg1vcd_muxer;
-extern const AVOutputFormat ff_mpeg2dvd_muxer;
-extern const AVOutputFormat ff_mpeg2svcd_muxer;
-extern const AVOutputFormat ff_mpeg2vob_muxer;
+extern const FFOutputFormat ff_mpeg1vcd_muxer;
+extern const FFOutputFormat ff_mpeg2dvd_muxer;
+extern const FFOutputFormat ff_mpeg2svcd_muxer;
+extern const FFOutputFormat ff_mpeg2vob_muxer;
 
 static int put_pack_header(AVFormatContext *ctx, uint8_t *buf,
                            int64_t timestamp)
@@ -307,12 +308,12 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
     int video_bitrate;
 
     s->packet_number = 0;
-    s->is_vcd   =  (CONFIG_MPEG1VCD_MUXER  && ctx->oformat == &ff_mpeg1vcd_muxer);
-    s->is_svcd  =  (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer);
-    s->is_mpeg2 = ((CONFIG_MPEG2VOB_MUXER  && ctx->oformat == &ff_mpeg2vob_muxer) ||
-                   (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer) ||
-                   (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer));
-    s->is_dvd   =  (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer);
+    s->is_vcd   =  (CONFIG_MPEG1VCD_MUXER  && ctx->oformat == &ff_mpeg1vcd_muxer.p);
+    s->is_svcd  =  (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer.p);
+    s->is_mpeg2 = ((CONFIG_MPEG2VOB_MUXER  && ctx->oformat == &ff_mpeg2vob_muxer.p) ||
+                   (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer.p) ||
+                   (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer.p));
+    s->is_dvd   =  (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer.p);
 
     if (ctx->packet_size) {
         if (ctx->packet_size < 20 || ctx->packet_size > (1 << 23) + 10) {
@@ -1293,87 +1294,87 @@ static const AVClass mpeg_class = {
 };
 
 #if CONFIG_MPEG1SYSTEM_MUXER
-const AVOutputFormat ff_mpeg1system_muxer = {
-    .name              = "mpeg",
-    .long_name         = NULL_IF_CONFIG_SMALL("MPEG-1 Systems / MPEG program stream"),
-    .mime_type         = "video/mpeg",
-    .extensions        = "mpg,mpeg",
+const FFOutputFormat ff_mpeg1system_muxer = {
+    .p.name            = "mpeg",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MPEG-1 Systems / MPEG program stream"),
+    .p.mime_type       = "video/mpeg",
+    .p.extensions      = "mpg,mpeg",
     .priv_data_size    = sizeof(MpegMuxContext),
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_MPEG1VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_MP2,
+    .p.video_codec     = AV_CODEC_ID_MPEG1VIDEO,
     .write_header      = mpeg_mux_init,
     .write_packet      = mpeg_mux_write_packet,
     .write_trailer     = mpeg_mux_end,
     .deinit            = mpeg_mux_deinit,
-    .priv_class        = &mpeg_class,
+    .p.priv_class      = &mpeg_class,
 };
 #endif
 
 #if CONFIG_MPEG1VCD_MUXER
-const AVOutputFormat ff_mpeg1vcd_muxer = {
-    .name              = "vcd",
-    .long_name         = NULL_IF_CONFIG_SMALL("MPEG-1 Systems / MPEG program stream (VCD)"),
-    .mime_type         = "video/mpeg",
+const FFOutputFormat ff_mpeg1vcd_muxer = {
+    .p.name            = "vcd",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MPEG-1 Systems / MPEG program stream (VCD)"),
+    .p.mime_type       = "video/mpeg",
     .priv_data_size    = sizeof(MpegMuxContext),
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_MPEG1VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_MP2,
+    .p.video_codec     = AV_CODEC_ID_MPEG1VIDEO,
     .write_header      = mpeg_mux_init,
     .write_packet      = mpeg_mux_write_packet,
     .write_trailer     = mpeg_mux_end,
     .deinit            = mpeg_mux_deinit,
-    .priv_class        = &mpeg_class,
+    .p.priv_class      = &mpeg_class,
 };
 #endif
 
 #if CONFIG_MPEG2VOB_MUXER
-const AVOutputFormat ff_mpeg2vob_muxer = {
-    .name              = "vob",
-    .long_name         = NULL_IF_CONFIG_SMALL("MPEG-2 PS (VOB)"),
-    .mime_type         = "video/mpeg",
-    .extensions        = "vob",
+const FFOutputFormat ff_mpeg2vob_muxer = {
+    .p.name            = "vob",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MPEG-2 PS (VOB)"),
+    .p.mime_type       = "video/mpeg",
+    .p.extensions      = "vob",
     .priv_data_size    = sizeof(MpegMuxContext),
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_MP2,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .write_header      = mpeg_mux_init,
     .write_packet      = mpeg_mux_write_packet,
     .write_trailer     = mpeg_mux_end,
     .deinit            = mpeg_mux_deinit,
-    .priv_class        = &mpeg_class,
+    .p.priv_class      = &mpeg_class,
 };
 #endif
 
 /* Same as mpeg2vob_mux except that the pack size is 2324 */
 #if CONFIG_MPEG2SVCD_MUXER
-const AVOutputFormat ff_mpeg2svcd_muxer = {
-    .name              = "svcd",
-    .long_name         = NULL_IF_CONFIG_SMALL("MPEG-2 PS (SVCD)"),
-    .mime_type         = "video/mpeg",
-    .extensions        = "vob",
+const FFOutputFormat ff_mpeg2svcd_muxer = {
+    .p.name            = "svcd",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MPEG-2 PS (SVCD)"),
+    .p.mime_type       = "video/mpeg",
+    .p.extensions      = "vob",
     .priv_data_size    = sizeof(MpegMuxContext),
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_MP2,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .write_header      = mpeg_mux_init,
     .write_packet      = mpeg_mux_write_packet,
     .write_trailer     = mpeg_mux_end,
     .deinit            = mpeg_mux_deinit,
-    .priv_class        = &mpeg_class,
+    .p.priv_class      = &mpeg_class,
 };
 #endif
 
 /*  Same as mpeg2vob_mux except the 'is_dvd' flag is set to produce NAV pkts */
 #if CONFIG_MPEG2DVD_MUXER
-const AVOutputFormat ff_mpeg2dvd_muxer = {
-    .name              = "dvd",
-    .long_name         = NULL_IF_CONFIG_SMALL("MPEG-2 PS (DVD VOB)"),
-    .mime_type         = "video/mpeg",
-    .extensions        = "dvd",
+const FFOutputFormat ff_mpeg2dvd_muxer = {
+    .p.name            = "dvd",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MPEG-2 PS (DVD VOB)"),
+    .p.mime_type       = "video/mpeg",
+    .p.extensions      = "dvd",
     .priv_data_size    = sizeof(MpegMuxContext),
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_MP2,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .write_header      = mpeg_mux_init,
     .write_packet      = mpeg_mux_write_packet,
     .write_trailer     = mpeg_mux_end,
     .deinit            = mpeg_mux_deinit,
-    .priv_class        = &mpeg_class,
+    .p.priv_class      = &mpeg_class,
 };
 #endif
diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 48d39e6a7da..00ad426086f 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -2308,19 +2308,19 @@ static const AVClass mpegts_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_mpegts_muxer = {
-    .name           = "mpegts",
-    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
-    .mime_type      = "video/MP2T",
-    .extensions     = "ts,m2t,m2ts,mts",
+const FFOutputFormat ff_mpegts_muxer = {
+    .p.name         = "mpegts",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
+    .p.mime_type    = "video/MP2T",
+    .p.extensions   = "ts,m2t,m2ts,mts",
     .priv_data_size = sizeof(MpegTSWrite),
-    .audio_codec    = AV_CODEC_ID_MP2,
-    .video_codec    = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec  = AV_CODEC_ID_MP2,
+    .p.video_codec  = AV_CODEC_ID_MPEG2VIDEO,
     .init           = mpegts_init,
     .write_packet   = mpegts_write_packet,
     .write_trailer  = mpegts_write_end,
     .deinit         = mpegts_deinit,
     .check_bitstream = mpegts_check_bitstream,
-    .flags          = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
-    .priv_class     = &mpegts_muxer_class,
+    .p.flags        = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
+    .p.priv_class   = &mpegts_muxer_class,
 };
diff --git a/libavformat/mpjpeg.c b/libavformat/mpjpeg.c
index c5e5d1e2864..81ace8e9ee1 100644
--- a/libavformat/mpjpeg.c
+++ b/libavformat/mpjpeg.c
@@ -20,6 +20,7 @@
  */
 #include "libavutil/opt.h"
 #include "avformat.h"
+#include "mux.h"
 
 /* Multipart JPEG */
 
@@ -61,16 +62,16 @@ static const AVClass mpjpeg_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_mpjpeg_muxer = {
-    .name              = "mpjpeg",
-    .long_name         = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
-    .mime_type         = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
-    .extensions        = "mjpg",
+const FFOutputFormat ff_mpjpeg_muxer = {
+    .p.name            = "mpjpeg",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
+    .p.mime_type       = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
+    .p.extensions      = "mjpg",
     .priv_data_size    = sizeof(MPJPEGContext),
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_MJPEG,
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_MJPEG,
     .write_header      = mpjpeg_write_header,
     .write_packet      = mpjpeg_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
-    .priv_class        = &mpjpeg_muxer_class,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
+    .p.priv_class      = &mpjpeg_muxer_class,
 };
diff --git a/libavformat/mux.c b/libavformat/mux.c
index b2b5be63b44..04de05ec178 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -118,8 +118,8 @@ int avformat_alloc_output_context2(AVFormatContext **avctx, const AVOutputFormat
     }
 
     s->oformat = oformat;
-    if (s->oformat->priv_data_size > 0) {
-        s->priv_data = av_mallocz(s->oformat->priv_data_size);
+    if (ffofmt(s->oformat)->priv_data_size > 0) {
+        s->priv_data = av_mallocz(ffofmt(s->oformat)->priv_data_size);
         if (!s->priv_data)
             goto nomem;
         if (s->oformat->priv_class) {
@@ -182,7 +182,7 @@ static int init_muxer(AVFormatContext *s, AVDictionary **options)
 {
     FFFormatContext *const si = ffformatcontext(s);
     AVDictionary *tmp = NULL;
-    const AVOutputFormat *of = s->oformat;
+    const FFOutputFormat *of = ffofmt(s->oformat);
     AVDictionaryEntry *e;
     int ret = 0;
 
@@ -201,7 +201,7 @@ static int init_muxer(AVFormatContext *s, AVDictionary **options)
     }
 
     // some sanity checks
-    if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
+    if (s->nb_streams == 0 && !(of->p.flags & AVFMT_NOSTREAMS)) {
         av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
         ret = AVERROR(EINVAL);
         goto fail;
@@ -251,7 +251,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
             break;
         case AVMEDIA_TYPE_VIDEO:
             if ((par->width <= 0 || par->height <= 0) &&
-                !(of->flags & AVFMT_NODIMENSIONS)) {
+                !(of->p.flags & AVFMT_NODIMENSIONS)) {
                 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
                 ret = AVERROR(EINVAL);
                 goto fail;
@@ -281,11 +281,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
         sti->is_intra_only = ff_is_intra_only(par->codec_id);
 
-        if (of->codec_tag) {
+        if (of->p.codec_tag) {
             if (   par->codec_tag
                 && par->codec_id == AV_CODEC_ID_RAWVIDEO
-                && (   av_codec_get_tag(of->codec_tag, par->codec_id) == 0
-                    || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
+                && (   av_codec_get_tag(of->p.codec_tag, par->codec_id) == 0
+                    || av_codec_get_tag(of->p.codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
                 && !validate_codec_tag(s, st)) {
                 // the current rawvideo encoding system ends up setting
                 // the wrong codec_tag for avi/mov, we override it here
@@ -301,7 +301,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                     goto fail;
                 }
             } else
-                par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
+                par->codec_tag = av_codec_get_tag(of->p.codec_tag, par->codec_id);
         }
 
         if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT)
@@ -319,8 +319,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
             ret = AVERROR(ENOMEM);
             goto fail;
         }
-        if (of->priv_class) {
-            *(const AVClass **)s->priv_data = of->priv_class;
+        if (of->p.priv_class) {
+            *(const AVClass **)s->priv_data = of->p.priv_class;
             av_opt_set_defaults(s->priv_data);
             if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
                 goto fail;
@@ -343,10 +343,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
          *options = tmp;
     }
 
-    if (s->oformat->init) {
-        if ((ret = s->oformat->init(s)) < 0) {
-            if (s->oformat->deinit)
-                s->oformat->deinit(s);
+    if (of->init) {
+        if ((ret = of->init(s)) < 0) {
+            if (of->deinit)
+                of->deinit(s);
             return ret;
         }
         return ret == 0;
@@ -420,8 +420,9 @@ static void flush_if_needed(AVFormatContext *s)
 static void deinit_muxer(AVFormatContext *s)
 {
     FFFormatContext *const si = ffformatcontext(s);
-    if (s->oformat && s->oformat->deinit && si->initialized)
-        s->oformat->deinit(s);
+    const FFOutputFormat *const of = ffofmt(s->oformat);
+    if (of && of->deinit && si->initialized)
+        of->deinit(s);
     si->initialized =
     si->streams_initialized = 0;
 }
@@ -437,7 +438,7 @@ int avformat_init_output(AVFormatContext *s, AVDictionary **options)
     si->initialized = 1;
     si->streams_initialized = ret;
 
-    if (s->oformat->init && ret) {
+    if (ffofmt(s->oformat)->init && ret) {
         if ((ret = init_pts(s)) < 0)
             return ret;
 
@@ -460,8 +461,8 @@ int avformat_write_header(AVFormatContext *s, AVDictionary **options)
 
     if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
         avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
-    if (s->oformat->write_header) {
-        ret = s->oformat->write_header(s);
+    if (ffofmt(s->oformat)->write_header) {
+        ret = ffofmt(s->oformat)->write_header(s);
         if (ret >= 0 && s->pb && s->pb->error < 0)
             ret = s->pb->error;
         if (ret < 0)
@@ -724,9 +725,9 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
     if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
         AVFrame **frame = (AVFrame **)pkt->data;
         av_assert0(pkt->size == sizeof(*frame));
-        ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, frame, 0);
+        ret = ffofmt(s->oformat)->write_uncoded_frame(s, pkt->stream_index, frame, 0);
     } else {
-        ret = s->oformat->write_packet(s, pkt);
+        ret = ffofmt(s->oformat)->write_packet(s, pkt);
     }
 
     if (s->pb && ret >= 0) {
@@ -1078,9 +1079,9 @@ static int check_bitstream(AVFormatContext *s, FFStream *sti, AVPacket *pkt)
     if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
         return 1;
 
-    if (s->oformat->check_bitstream) {
+    if (ffofmt(s->oformat)->check_bitstream) {
         if (!sti->bitstream_checked) {
-            if ((ret = s->oformat->check_bitstream(s, &sti->pub, pkt)) < 0)
+            if ((ret = ffofmt(s->oformat)->check_bitstream(s, &sti->pub, pkt)) < 0)
                 return ret;
             else if (ret == 1)
                 sti->bitstream_checked = 1;
@@ -1198,7 +1199,7 @@ int av_write_frame(AVFormatContext *s, AVPacket *in)
 
     if (!in) {
         if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
-            ret = s->oformat->write_packet(s, NULL);
+            ret = ffofmt(s->oformat)->write_packet(s, NULL);
             flush_if_needed(s);
             if (ret >= 0 && s->pb && s->pb->error < 0)
                 ret = s->pb->error;
@@ -1273,14 +1274,12 @@ int av_write_trailer(AVFormatContext *s)
     if (ret >= 0)
         ret = ret1;
 
-    if (s->oformat->write_trailer) {
+    if (ffofmt(s->oformat)->write_trailer) {
         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
-        if (ret >= 0) {
-        ret = s->oformat->write_trailer(s);
-        } else {
-            s->oformat->write_trailer(s);
-        }
+        ret1 = ffofmt(s->oformat)->write_trailer(s);
+        if (ret >= 0)
+            ret = ret1;
     }
 
     deinit_muxer(s);
@@ -1303,9 +1302,10 @@ int av_write_trailer(AVFormatContext *s)
 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
                             int64_t *dts, int64_t *wall)
 {
-    if (!s->oformat || !s->oformat->get_output_timestamp)
+    const FFOutputFormat *const of = ffofmt(s->oformat);
+    if (!of || !of->get_output_timestamp)
         return AVERROR(ENOSYS);
-    s->oformat->get_output_timestamp(s, stream, dts, wall);
+    of->get_output_timestamp(s, stream, dts, wall);
     return 0;
 }
 
@@ -1395,7 +1395,7 @@ static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
     AVPacket *pkt = si->parse_pkt;
 
     av_assert0(s->oformat);
-    if (!s->oformat->write_uncoded_frame) {
+    if (!ffofmt(s->oformat)->write_uncoded_frame) {
         av_frame_free(&frame);
         return AVERROR(ENOSYS);
     }
@@ -1452,9 +1452,10 @@ int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index,
 
 int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
 {
-    av_assert0(s->oformat);
-    if (!s->oformat->write_uncoded_frame)
+    const FFOutputFormat *const of = ffofmt(s->oformat);
+    av_assert0(of);
+    if (!of->write_uncoded_frame)
         return AVERROR(ENOSYS);
-    return s->oformat->write_uncoded_frame(s, stream_index, NULL,
-                                           AV_WRITE_UNCODED_FRAME_QUERY);
+    return of->write_uncoded_frame(s, stream_index, NULL,
+                                   AV_WRITE_UNCODED_FRAME_QUERY);
 }
diff --git a/libavformat/mux.h b/libavformat/mux.h
index 1bfcaf795fd..c2de45400c2 100644
--- a/libavformat/mux.h
+++ b/libavformat/mux.h
@@ -25,6 +25,119 @@
 #include "libavcodec/packet.h"
 #include "avformat.h"
 
+struct AVDeviceInfoList;
+
+typedef struct FFOutputFormat {
+    /**
+     * The public AVOutputFormat. See avformat.h for it.
+     */
+    AVOutputFormat p;
+    /**
+     * size of private data so that it can be allocated in the wrapper
+     */
+    int priv_data_size;
+
+    /**
+     * Internal flags. See FF_FMT_FLAG_* in internal.h.
+     */
+    int flags_internal;
+
+    int (*write_header)(AVFormatContext *);
+    /**
+     * Write a packet. If AVFMT_ALLOW_FLUSH is set in flags,
+     * pkt can be NULL in order to flush data buffered in the muxer.
+     * When flushing, return 0 if there still is more data to flush,
+     * or 1 if everything was flushed and there is no more buffered
+     * data.
+     */
+    int (*write_packet)(AVFormatContext *, AVPacket *pkt);
+    int (*write_trailer)(AVFormatContext *);
+    /**
+     * A format-specific function for interleavement.
+     * If unset, packets will be interleaved by dts.
+     *
+     * @param s           An AVFormatContext for output. pkt will be added to
+     *                    resp. taken from its packet buffer.
+     * @param[in,out] pkt A packet to be interleaved if has_packet is set;
+     *                    also used to return packets. If no packet is returned
+     *                    (e.g. on error), pkt is blank on return.
+     * @param flush       1 if no further packets are available as input and
+     *                    all remaining packets should be output.
+     * @param has_packet  If set, pkt contains a packet to be interleaved
+     *                    on input; otherwise pkt is blank on input.
+     * @return 1 if a packet was output, 0 if no packet could be output,
+     *         < 0 if an error occurred
+     */
+    int (*interleave_packet)(AVFormatContext *s, AVPacket *pkt,
+                             int flush, int has_packet);
+    /**
+     * Test if the given codec can be stored in this container.
+     *
+     * @return 1 if the codec is supported, 0 if it is not.
+     *         A negative number if unknown.
+     *         MKTAG('A', 'P', 'I', 'C') if the codec is only supported as AV_DISPOSITION_ATTACHED_PIC
+     */
+    int (*query_codec)(enum AVCodecID id, int std_compliance);
+
+    void (*get_output_timestamp)(AVFormatContext *s, int stream,
+                                 int64_t *dts, int64_t *wall);
+    /**
+     * Allows sending messages from application to device.
+     */
+    int (*control_message)(AVFormatContext *s, int type,
+                           void *data, size_t data_size);
+
+    /**
+     * Write an uncoded AVFrame.
+     *
+     * See av_write_uncoded_frame() for details.
+     *
+     * The library will free *frame afterwards, but the muxer can prevent it
+     * by setting the pointer to NULL.
+     */
+    int (*write_uncoded_frame)(AVFormatContext *, int stream_index,
+                               AVFrame **frame, unsigned flags);
+    /**
+     * Returns device list with it properties.
+     * @see avdevice_list_devices() for more details.
+     */
+    int (*get_device_list)(AVFormatContext *s, struct AVDeviceInfoList *device_list);
+    /**
+     * Initialize format. May allocate data here, and set any AVFormatContext or
+     * AVStream parameters that need to be set before packets are sent.
+     * This method must not write output.
+     *
+     * Return 0 if streams were fully configured, 1 if not, negative AVERROR on failure
+     *
+     * Any allocations made here must be freed in deinit().
+     */
+    int (*init)(AVFormatContext *);
+    /**
+     * Deinitialize format. If present, this is called whenever the muxer is being
+     * destroyed, regardless of whether or not the header has been written.
+     *
+     * If a trailer is being written, this is called after write_trailer().
+     *
+     * This is called if init() fails as well.
+     */
+    void (*deinit)(AVFormatContext *);
+    /**
+     * Set up any necessary bitstream filtering and extract any extra data needed
+     * for the global header.
+     *
+     * @note pkt might have been directly forwarded by a meta-muxer; therefore
+     *       pkt->stream_index as well as the pkt's timebase might be invalid.
+     * Return 0 if more packets from this stream must be checked; 1 if not.
+     */
+    int (*check_bitstream)(AVFormatContext *s, AVStream *st,
+                           const AVPacket *pkt);
+} FFOutputFormat;
+
+static inline const FFOutputFormat *ffofmt(const AVOutputFormat *fmt)
+{
+    return (const FFOutputFormat*)fmt;
+}
+
 /**
  * Add packet to an AVFormatContext's packet_buffer list, determining its
  * interleaved position using compare() function argument.
diff --git a/libavformat/mux_utils.c b/libavformat/mux_utils.c
index 55e58ae9d68..3e63b8039af 100644
--- a/libavformat/mux_utils.c
+++ b/libavformat/mux_utils.c
@@ -45,8 +45,8 @@ int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
 {
     if (ofmt) {
         unsigned int codec_tag;
-        if (ofmt->query_codec)
-            return ofmt->query_codec(codec_id, std_compliance);
+        if (ffofmt(ofmt)->query_codec)
+            return ffofmt(ofmt)->query_codec(codec_id, std_compliance);
         else if (ofmt->codec_tag)
             return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
         else if (codec_id == ofmt->video_codec ||
diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index 58c551c83c3..a29d678098c 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -61,8 +61,11 @@
 #include "config.h"
 #include "version.h"
 
-extern const AVOutputFormat ff_mxf_d10_muxer;
-extern const AVOutputFormat ff_mxf_opatom_muxer;
+extern const FFOutputFormat ff_mxf_d10_muxer;
+extern const FFOutputFormat ff_mxf_opatom_muxer;
+
+#define IS_D10(s)    ((s)->oformat == &ff_mxf_d10_muxer.p)
+#define IS_OPATOM(s) ((s)->oformat == &ff_mxf_opatom_muxer.p)
 
 #define EDIT_UNITS_PER_BODY 250
 #define KAG_SIZE 512
@@ -667,7 +670,7 @@ static void mxf_write_preface(AVFormatContext *s)
 
     // operational pattern
     mxf_write_local_tag(s, 16, 0x3B09);
-    if (s->oformat == &ff_mxf_opatom_muxer)
+    if (IS_OPATOM(s))
         avio_write(pb, opatom_ul, 16);
     else
         avio_write(pb, op1a_ul, 16);
@@ -765,7 +768,7 @@ static void mxf_write_identification(AVFormatContext *s)
     AVDictionaryEntry *product_entry = av_dict_get(s->metadata, "product_name", NULL, 0);
     AVDictionaryEntry *version_entry = av_dict_get(s->metadata, "product_version", NULL, 0);
     const char *company = com_entry ? com_entry->value : "FFmpeg";
-    const char *product = product_entry ? product_entry->value : s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
+    const char *product = product_entry ? product_entry->value : !IS_OPATOM(s) ? "OP1a Muxer" : "OPAtom Muxer";
     const char *platform = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : PLATFORM_IDENT;
     const char *version = version_entry ? version_entry->value :
                               s->flags & AVFMT_FLAG_BITEXACT ? "0.0.0" :
@@ -866,7 +869,7 @@ static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *packag
     // write edit rate
     mxf_write_local_tag(s, 8, 0x4B01);
 
-    if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer) {
+    if (st == mxf->timecode_track && IS_OPATOM(s)) {
         avio_wb32(pb, mxf->tc.rate.num);
         avio_wb32(pb, mxf->tc.rate.den);
     } else {
@@ -902,7 +905,7 @@ static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
     // write duration
     mxf_write_local_tag(s, 8, 0x0202);
 
-    if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+    if (st != mxf->timecode_track && IS_OPATOM(s) && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
     } else {
         avio_wb64(pb, mxf->duration);
@@ -1066,7 +1069,7 @@ static int64_t mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UI
     avio_wb32(pb, st->index+2);
 
     mxf_write_local_tag(s, 8, 0x3001);
-    if (s->oformat == &ff_mxf_d10_muxer) {
+    if (IS_D10(s)) {
         avio_wb32(pb, mxf->time_base.den);
         avio_wb32(pb, mxf->time_base.num);
     } else {
@@ -1138,7 +1141,7 @@ static int64_t mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID
     mxf_write_local_tag(s, 4, 0x3202);
     avio_wb32(pb, stored_height>>sc->interlaced);
 
-    if (s->oformat == &ff_mxf_d10_muxer) {
+    if (IS_D10(s)) {
         //Stored F2 Offset
         mxf_write_local_tag(s, 4, 0x3216);
         avio_wb32(pb, 0);
@@ -1435,7 +1438,7 @@ static int64_t mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st,
     int show_warnings = !mxf->footer_partition_offset;
     int64_t pos = mxf_write_generic_desc(s, st, key);
 
-    if (s->oformat == &ff_mxf_opatom_muxer) {
+    if (IS_OPATOM(s)) {
         mxf_write_local_tag(s, 8, 0x3002);
         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
     }
@@ -1449,19 +1452,19 @@ static int64_t mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st,
     avio_wb32(pb, st->codecpar->sample_rate);
     avio_wb32(pb, 1);
 
-    if (s->oformat == &ff_mxf_d10_muxer) {
+    if (IS_D10(s)) {
         mxf_write_local_tag(s, 1, 0x3D04);
         avio_w8(pb, 0);
     }
 
     mxf_write_local_tag(s, 4, 0x3D07);
     if (mxf->channel_count == -1) {
-        if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) &&
+        if (show_warnings && IS_D10(s) &&
             (st->codecpar->ch_layout.nb_channels != 4) &&
             (st->codecpar->ch_layout.nb_channels != 8))
             av_log(s, AV_LOG_WARNING, "the number of audio channels shall be 4 or 8 : the output will not comply to MXF D-10 specs, use -d10_channelcount to fix this\n");
         avio_wb32(pb, st->codecpar->ch_layout.nb_channels);
-    } else if (s->oformat == &ff_mxf_d10_muxer) {
+    } else if (IS_D10(s)) {
         if (show_warnings && (mxf->channel_count < st->codecpar->ch_layout.nb_channels))
             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
@@ -1961,7 +1964,7 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid,
     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
 
     // BodyOffset
-    if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
+    if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && !IS_OPATOM(s))
         avio_wb64(pb, mxf->body_offset);
     else
         avio_wb64(pb, 0);
@@ -1969,7 +1972,7 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid,
     avio_wb32(pb, bodysid); // bodySID
 
     // operational pattern
-    if (s->oformat == &ff_mxf_opatom_muxer)
+    if (IS_OPATOM(s))
         avio_write(pb, opatom_ul, 16);
     else
         avio_write(pb, op1a_ul, 16);
@@ -2436,7 +2439,7 @@ static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
             }
         }
     }
-    if (s->oformat != &ff_mxf_d10_muxer) {
+    if (!IS_D10(s)) {
         const UID *codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);
         if (!codec_ul)
             return 0;
@@ -2533,7 +2536,7 @@ static int mxf_init(AVFormatContext *s)
     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
     int64_t timestamp = 0;
 
-    if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {
+    if (IS_OPATOM(s) && s->nb_streams != 1) {
         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
         return -1;
     }
@@ -2549,7 +2552,7 @@ static int mxf_init(AVFormatContext *s)
         st->priv_data = sc;
         sc->index = -1;
 
-        if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
+        if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && !IS_OPATOM(s)) {
             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
             return -1;
         }
@@ -2593,12 +2596,12 @@ static int mxf_init(AVFormatContext *s)
 
             sc->video_bit_rate = st->codecpar->bit_rate;
 
-            if (s->oformat == &ff_mxf_d10_muxer ||
+            if (IS_D10(s) ||
                 st->codecpar->codec_id == AV_CODEC_ID_DNXHD ||
                 st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO)
                 mxf->cbr_index = 1;
 
-            if (s->oformat == &ff_mxf_d10_muxer) {
+            if (IS_D10(s)) {
                 int ntsc = mxf->time_base.den != 25;
                 int ul_index;
 
@@ -2636,7 +2639,7 @@ static int mxf_init(AVFormatContext *s)
                 return -1;
             }
             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
-            if (s->oformat == &ff_mxf_d10_muxer) {
+            if (IS_D10(s)) {
                 if (st->index != 1) {
                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
                     return -1;
@@ -2648,7 +2651,7 @@ static int mxf_init(AVFormatContext *s)
                 sc->index = INDEX_D10_AUDIO;
                 sc->container_ul = ((MXFStreamContext*)s->streams[0]->priv_data)->container_ul;
                 sc->frame_size = 4 + 8 * av_rescale_rnd(st->codecpar->sample_rate, mxf->time_base.num, mxf->time_base.den, AV_ROUND_UP) * 4;
-            } else if (s->oformat == &ff_mxf_opatom_muxer) {
+            } else if (IS_OPATOM(s)) {
                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
 
                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
@@ -2707,7 +2710,7 @@ static int mxf_init(AVFormatContext *s)
 
         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
         sc->track_essence_element_key[15] = present[sc->index];
-        if (s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
+        if (IS_OPATOM(s) && st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
             // clip-wrapping requires 0x0D per ST2019-4:2009 or 0x06 per previous version ST2019-4:2008
             // we choose to use 0x06 instead 0x0D to be compatible with AVID systems
             // and produce mxf files with the most relevant flavour for opatom
@@ -2720,7 +2723,7 @@ static int mxf_init(AVFormatContext *s)
         present[sc->index]++;
     }
 
-    if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
+    if (IS_D10(s) || IS_OPATOM(s)) {
         mxf->essence_container_count = 1;
     }
 
@@ -2889,7 +2892,7 @@ static void mxf_compute_edit_unit_byte_count(AVFormatContext *s)
     MXFContext *mxf = s->priv_data;
     int i;
 
-    if (s->oformat == &ff_mxf_opatom_muxer) {
+    if (IS_OPATOM(s)) {
         MXFStreamContext *sc = s->streams[0]->priv_data;
         mxf->edit_unit_byte_count = sc->frame_size;
         return;
@@ -2915,7 +2918,7 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
     int err;
 
     if (!mxf->header_written && pkt->stream_index != 0 &&
-        s->oformat != &ff_mxf_opatom_muxer) {
+        !IS_OPATOM(s)) {
         av_log(s, AV_LOG_ERROR, "Received non-video packet before "
                                 "header has been written\n");
         return AVERROR_INVALIDDATA;
@@ -2967,7 +2970,7 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
             mxf_compute_edit_unit_byte_count(s);
     }
 
-    if (s->oformat == &ff_mxf_opatom_muxer)
+    if (IS_OPATOM(s))
         return mxf_write_opatom_packet(s, pkt, &ie);
 
     if (!mxf->header_written) {
@@ -3015,8 +3018,7 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
 
     mxf_write_klv_fill(s);
     avio_write(pb, sc->track_essence_element_key, 16); // write key
-    if (s->oformat == &ff_mxf_d10_muxer &&
-        st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+    if (IS_D10(s) && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
         mxf_write_d10_audio_packet(s, st, pkt);
     } else {
         klv_encode_ber4_length(pb, pkt->size); // write length
@@ -3037,7 +3039,7 @@ static void mxf_write_random_index_pack(AVFormatContext *s)
     avio_write(pb, ff_mxf_random_index_pack_key, 16);
     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
 
-    if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
+    if (mxf->edit_unit_byte_count && !IS_OPATOM(s))
         avio_wb32(pb, 1); // BodySID of header partition
     else
         avio_wb32(pb, 0);
@@ -3061,7 +3063,7 @@ static int mxf_write_footer(AVFormatContext *s)
     int i, err;
 
     if (!mxf->header_written ||
-        (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
+        (IS_OPATOM(s) && !mxf->body_partition_offset)) {
         /* reason could be invalid options/not supported codec/out of memory */
         return AVERROR_UNKNOWN;
     }
@@ -3070,7 +3072,7 @@ static int mxf_write_footer(AVFormatContext *s)
 
     mxf_write_klv_fill(s);
     mxf->footer_partition_offset = avio_tell(pb);
-    if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
+    if (mxf->edit_unit_byte_count && !IS_OPATOM(s)) { // no need to repeat index
         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
             return err;
     } else {
@@ -3084,7 +3086,7 @@ static int mxf_write_footer(AVFormatContext *s)
     mxf_write_random_index_pack(s);
 
     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
-        if (s->oformat == &ff_mxf_opatom_muxer) {
+        if (IS_OPATOM(s)) {
             /* rewrite body partition to update lengths */
             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
             if ((err = mxf_write_opatom_body_partition(s)) < 0)
@@ -3092,7 +3094,7 @@ static int mxf_write_footer(AVFormatContext *s)
         }
 
         avio_seek(pb, 0, SEEK_SET);
-        if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
+        if (mxf->edit_unit_byte_count && !IS_OPATOM(s)) {
             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
                 return err;
             mxf_write_klv_fill(s);
@@ -3260,52 +3262,52 @@ static const AVClass mxf_opatom_muxer_class = {
     .version        = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_mxf_muxer = {
-    .name              = "mxf",
-    .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
-    .mime_type         = "application/mxf",
-    .extensions        = "mxf",
+const FFOutputFormat ff_mxf_muxer = {
+    .p.name            = "mxf",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
+    .p.mime_type       = "application/mxf",
+    .p.extensions      = "mxf",
     .priv_data_size    = sizeof(MXFContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .init              = mxf_init,
     .write_packet      = mxf_write_packet,
     .write_trailer     = mxf_write_footer,
     .deinit            = mxf_deinit,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
     .interleave_packet = mxf_interleave,
-    .priv_class        = &mxf_muxer_class,
+    .p.priv_class      = &mxf_muxer_class,
 };
 
-const AVOutputFormat ff_mxf_d10_muxer = {
-    .name              = "mxf_d10",
-    .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
-    .mime_type         = "application/mxf",
+const FFOutputFormat ff_mxf_d10_muxer = {
+    .p.name            = "mxf_d10",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
+    .p.mime_type       = "application/mxf",
     .priv_data_size    = sizeof(MXFContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .init              = mxf_init,
     .write_packet      = mxf_write_packet,
     .write_trailer     = mxf_write_footer,
     .deinit            = mxf_deinit,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
     .interleave_packet = mxf_interleave,
-    .priv_class        = &mxf_d10_muxer_class,
+    .p.priv_class      = &mxf_d10_muxer_class,
 };
 
-const AVOutputFormat ff_mxf_opatom_muxer = {
-    .name              = "mxf_opatom",
-    .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
-    .mime_type         = "application/mxf",
-    .extensions        = "mxf",
+const FFOutputFormat ff_mxf_opatom_muxer = {
+    .p.name            = "mxf_opatom",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
+    .p.mime_type       = "application/mxf",
+    .p.extensions      = "mxf",
     .priv_data_size    = sizeof(MXFContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_DNXHD,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_DNXHD,
     .init              = mxf_init,
     .write_packet      = mxf_write_packet,
     .write_trailer     = mxf_write_footer,
     .deinit            = mxf_deinit,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
     .interleave_packet = mxf_interleave,
-    .priv_class        = &mxf_opatom_muxer_class,
+    .p.priv_class      = &mxf_opatom_muxer_class,
 };
diff --git a/libavformat/nullenc.c b/libavformat/nullenc.c
index 3deca5a7eda..60bde2a0690 100644
--- a/libavformat/nullenc.c
+++ b/libavformat/nullenc.c
@@ -27,12 +27,12 @@ static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_null_muxer = {
-    .name              = "null",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw null video"),
-    .audio_codec       = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
-    .video_codec       = AV_CODEC_ID_WRAPPED_AVFRAME,
+const FFOutputFormat ff_null_muxer = {
+    .p.name            = "null",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw null video"),
+    .p.audio_codec     = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
+    .p.video_codec     = AV_CODEC_ID_WRAPPED_AVFRAME,
     .write_packet      = null_write_packet,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_NOFILE | AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_NOFILE | AVFMT_NOTIMESTAMPS,
     .interleave_packet = ff_interleave_packet_passthrough,
 };
diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c
index ff81ee34aa0..a5198c7ca9f 100644
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@@ -1253,20 +1253,20 @@ static const AVClass class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_nut_muxer = {
-    .name           = "nut",
-    .long_name      = NULL_IF_CONFIG_SMALL("NUT"),
-    .mime_type      = "video/x-nut",
-    .extensions     = "nut",
+const FFOutputFormat ff_nut_muxer = {
+    .p.name         = "nut",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("NUT"),
+    .p.mime_type    = "video/x-nut",
+    .p.extensions   = "nut",
     .priv_data_size = sizeof(NUTContext),
-    .audio_codec    = CONFIG_LIBVORBIS ? AV_CODEC_ID_VORBIS :
+    .p.audio_codec  = CONFIG_LIBVORBIS ? AV_CODEC_ID_VORBIS :
                       CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
-    .video_codec    = AV_CODEC_ID_MPEG4,
+    .p.video_codec  = AV_CODEC_ID_MPEG4,
     .write_header   = nut_write_header,
     .write_packet   = nut_write_packet,
     .write_trailer  = nut_write_trailer,
     .deinit         = nut_write_deinit,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
-    .codec_tag      = ff_nut_codec_tags,
-    .priv_class     = &class,
+    .p.flags        = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
+    .p.codec_tag    = ff_nut_codec_tags,
+    .p.priv_class   = &class,
 };
diff --git a/libavformat/oggenc.c b/libavformat/oggenc.c
index 458b2a9bdc4..2e582d0754c 100644
--- a/libavformat/oggenc.c
+++ b/libavformat/oggenc.c
@@ -33,6 +33,7 @@
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include "version.h"
 #include "vorbiscomment.h"
 
@@ -746,11 +747,11 @@ static void ogg_free(AVFormatContext *s)
 }
 
 #if CONFIG_OGG_MUXER
-const AVOutputFormat ff_ogg_muxer = {
-    .name              = "ogg",
-    .long_name         = NULL_IF_CONFIG_SMALL("Ogg"),
-    .mime_type         = "application/ogg",
-    .extensions        = "ogg"
+const FFOutputFormat ff_ogg_muxer = {
+    .p.name            = "ogg",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Ogg"),
+    .p.mime_type       = "application/ogg",
+    .p.extensions      = "ogg"
 #if !CONFIG_OGV_MUXER
                          ",ogv"
 #endif
@@ -762,90 +763,90 @@ const AVOutputFormat ff_ogg_muxer = {
 #endif
                          ,
     .priv_data_size    = sizeof(OGGContext),
-    .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
+    .p.audio_codec     = CONFIG_LIBVORBIS_ENCODER ?
                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
-    .video_codec       = AV_CODEC_ID_THEORA,
+    .p.video_codec     = AV_CODEC_ID_THEORA,
     .init              = ogg_init,
     .write_header      = ogg_write_header,
     .write_packet      = ogg_write_packet,
     .write_trailer     = ogg_write_trailer,
     .deinit            = ogg_free,
-    .flags             = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
-    .priv_class        = &ogg_muxer_class,
+    .p.flags           = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
+    .p.priv_class      = &ogg_muxer_class,
 };
 #endif
 
 #if CONFIG_OGA_MUXER
-const AVOutputFormat ff_oga_muxer = {
-    .name              = "oga",
-    .long_name         = NULL_IF_CONFIG_SMALL("Ogg Audio"),
-    .mime_type         = "audio/ogg",
-    .extensions        = "oga",
+const FFOutputFormat ff_oga_muxer = {
+    .p.name            = "oga",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Ogg Audio"),
+    .p.mime_type       = "audio/ogg",
+    .p.extensions      = "oga",
     .priv_data_size    = sizeof(OGGContext),
-    .audio_codec       = AV_CODEC_ID_FLAC,
+    .p.audio_codec     = AV_CODEC_ID_FLAC,
     .init              = ogg_init,
     .write_header      = ogg_write_header,
     .write_packet      = ogg_write_packet,
     .write_trailer     = ogg_write_trailer,
     .deinit            = ogg_free,
-    .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
-    .priv_class        = &ogg_muxer_class,
+    .p.flags           = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
+    .p.priv_class      = &ogg_muxer_class,
 };
 #endif
 
 #if CONFIG_OGV_MUXER
-const AVOutputFormat ff_ogv_muxer = {
-    .name              = "ogv",
-    .long_name         = NULL_IF_CONFIG_SMALL("Ogg Video"),
-    .mime_type         = "video/ogg",
-    .extensions        = "ogv",
+const FFOutputFormat ff_ogv_muxer = {
+    .p.name            = "ogv",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Ogg Video"),
+    .p.mime_type       = "video/ogg",
+    .p.extensions      = "ogv",
     .priv_data_size    = sizeof(OGGContext),
-    .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
+    .p.audio_codec     = CONFIG_LIBVORBIS_ENCODER ?
                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
-    .video_codec       = CONFIG_LIBTHEORA_ENCODER ?
+    .p.video_codec     = CONFIG_LIBTHEORA_ENCODER ?
                          AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8,
     .init              = ogg_init,
     .write_header      = ogg_write_header,
     .write_packet      = ogg_write_packet,
     .write_trailer     = ogg_write_trailer,
     .deinit            = ogg_free,
-    .flags             = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
-    .priv_class        = &ogg_muxer_class,
+    .p.flags           = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
+    .p.priv_class      = &ogg_muxer_class,
 };
 #endif
 
 #if CONFIG_SPX_MUXER
-const AVOutputFormat ff_spx_muxer = {
-    .name              = "spx",
-    .long_name         = NULL_IF_CONFIG_SMALL("Ogg Speex"),
-    .mime_type         = "audio/ogg",
-    .extensions        = "spx",
+const FFOutputFormat ff_spx_muxer = {
+    .p.name            = "spx",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Ogg Speex"),
+    .p.mime_type       = "audio/ogg",
+    .p.extensions      = "spx",
     .priv_data_size    = sizeof(OGGContext),
-    .audio_codec       = AV_CODEC_ID_SPEEX,
+    .p.audio_codec     = AV_CODEC_ID_SPEEX,
     .init              = ogg_init,
     .write_header      = ogg_write_header,
     .write_packet      = ogg_write_packet,
     .write_trailer     = ogg_write_trailer,
     .deinit            = ogg_free,
-    .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
-    .priv_class        = &ogg_muxer_class,
+    .p.flags           = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
+    .p.priv_class      = &ogg_muxer_class,
 };
 #endif
 
 #if CONFIG_OPUS_MUXER
-const AVOutputFormat ff_opus_muxer = {
-    .name              = "opus",
-    .long_name         = NULL_IF_CONFIG_SMALL("Ogg Opus"),
-    .mime_type         = "audio/ogg",
-    .extensions        = "opus",
+const FFOutputFormat ff_opus_muxer = {
+    .p.name            = "opus",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Ogg Opus"),
+    .p.mime_type       = "audio/ogg",
+    .p.extensions      = "opus",
     .priv_data_size    = sizeof(OGGContext),
-    .audio_codec       = AV_CODEC_ID_OPUS,
+    .p.audio_codec     = AV_CODEC_ID_OPUS,
     .init              = ogg_init,
     .write_header      = ogg_write_header,
     .write_packet      = ogg_write_packet,
     .write_trailer     = ogg_write_trailer,
     .deinit            = ogg_free,
-    .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
-    .priv_class        = &ogg_muxer_class,
+    .p.flags           = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
+    .p.priv_class      = &ogg_muxer_class,
 };
 #endif
diff --git a/libavformat/omaenc.c b/libavformat/omaenc.c
index 246f5195fb9..6d0b47465d1 100644
--- a/libavformat/omaenc.c
+++ b/libavformat/omaenc.c
@@ -24,6 +24,7 @@
 #include "avio_internal.h"
 #include "id3v2.h"
 #include "internal.h"
+#include "mux.h"
 #include "oma.h"
 #include "rawenc.h"
 
@@ -91,14 +92,14 @@ static av_cold int oma_write_header(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_oma_muxer = {
-    .name              = "oma",
-    .long_name         = NULL_IF_CONFIG_SMALL("Sony OpenMG audio"),
-    .mime_type         = "audio/x-oma",
-    .extensions        = "oma",
-    .audio_codec       = AV_CODEC_ID_ATRAC3,
+const FFOutputFormat ff_oma_muxer = {
+    .p.name            = "oma",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Sony OpenMG audio"),
+    .p.mime_type       = "audio/x-oma",
+    .p.extensions      = "oma",
+    .p.audio_codec     = AV_CODEC_ID_ATRAC3,
     .write_header      = oma_write_header,
     .write_packet      = ff_raw_write_packet,
-    .codec_tag         = ff_oma_codec_tags_list,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.codec_tag       = ff_oma_codec_tags_list,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/pcmenc.c b/libavformat/pcmenc.c
index 0cf497989af..7f716443081 100644
--- a/libavformat/pcmenc.c
+++ b/libavformat/pcmenc.c
@@ -22,18 +22,19 @@
 #include "config_components.h"
 
 #include "avformat.h"
+#include "mux.h"
 #include "rawenc.h"
 
 #define PCMDEF_0(name_, long_name_, ext, codec)
 #define PCMDEF_1(name_, long_name_, ext, codec)             \
-const AVOutputFormat ff_pcm_ ## name_ ## _muxer = {         \
-    .name         = #name_,                                 \
-    .long_name    = NULL_IF_CONFIG_SMALL(long_name_),       \
-    .extensions   = ext,                                    \
-    .audio_codec  = codec,                                  \
-    .video_codec  = AV_CODEC_ID_NONE,                          \
+const FFOutputFormat ff_pcm_ ## name_ ## _muxer = {         \
+    .p.name        = #name_,                                \
+    .p.long_name   = NULL_IF_CONFIG_SMALL(long_name_),      \
+    .p.extensions  = ext,                                   \
+    .p.audio_codec = codec,                                 \
+    .p.video_codec = AV_CODEC_ID_NONE,                      \
+    .p.flags       = AVFMT_NOTIMESTAMPS,                    \
     .write_packet = ff_raw_write_packet,                    \
-    .flags        = AVFMT_NOTIMESTAMPS,                     \
 };
 #define PCMDEF_2(name, long_name, ext, codec, enabled)      \
     PCMDEF_ ## enabled(name, long_name, ext, codec)
diff --git a/libavformat/rawenc.c b/libavformat/rawenc.c
index 267fce252d1..78fadda9679 100644
--- a/libavformat/rawenc.c
+++ b/libavformat/rawenc.c
@@ -59,16 +59,16 @@ static int force_one_stream(AVFormatContext *s)
 /* Note: Do not forget to add new entries to the Makefile as well. */
 
 #if CONFIG_AC3_MUXER
-const AVOutputFormat ff_ac3_muxer = {
-    .name              = "ac3",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw AC-3"),
-    .mime_type         = "audio/x-ac3",
-    .extensions        = "ac3",
-    .audio_codec       = AV_CODEC_ID_AC3,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_ac3_muxer = {
+    .p.name            = "ac3",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw AC-3"),
+    .p.mime_type       = "audio/x-ac3",
+    .p.extensions      = "ac3",
+    .p.audio_codec     = AV_CODEC_ID_AC3,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
@@ -92,266 +92,266 @@ static int adx_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_adx_muxer = {
-    .name              = "adx",
-    .long_name         = NULL_IF_CONFIG_SMALL("CRI ADX"),
-    .extensions        = "adx",
-    .audio_codec       = AV_CODEC_ID_ADPCM_ADX,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_adx_muxer = {
+    .p.name            = "adx",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("CRI ADX"),
+    .p.extensions      = "adx",
+    .p.audio_codec     = AV_CODEC_ID_ADPCM_ADX,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
     .write_trailer     = adx_write_trailer,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_APTX_MUXER
-const AVOutputFormat ff_aptx_muxer = {
-    .name              = "aptx",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw aptX (Audio Processing Technology for Bluetooth)"),
-    .extensions        = "aptx",
-    .audio_codec       = AV_CODEC_ID_APTX,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_aptx_muxer = {
+    .p.name            = "aptx",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw aptX (Audio Processing Technology for Bluetooth)"),
+    .p.extensions      = "aptx",
+    .p.audio_codec     = AV_CODEC_ID_APTX,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_APTX_HD_MUXER
-const AVOutputFormat ff_aptx_hd_muxer = {
-    .name              = "aptx_hd",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw aptX HD (Audio Processing Technology for Bluetooth)"),
-    .extensions        = "aptxhd",
-    .audio_codec       = AV_CODEC_ID_APTX_HD,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_aptx_hd_muxer = {
+    .p.name            = "aptx_hd",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw aptX HD (Audio Processing Technology for Bluetooth)"),
+    .p.extensions      = "aptxhd",
+    .p.audio_codec     = AV_CODEC_ID_APTX_HD,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_AVS2_MUXER
-const AVOutputFormat ff_avs2_muxer = {
-    .name              = "avs2",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw AVS2-P2/IEEE1857.4 video"),
-    .extensions        = "avs,avs2",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_AVS2,
+const FFOutputFormat ff_avs2_muxer = {
+    .p.name            = "avs2",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw AVS2-P2/IEEE1857.4 video"),
+    .p.extensions      = "avs,avs2",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_AVS2,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_AVS3_MUXER
-const AVOutputFormat ff_avs3_muxer = {
-    .name              = "avs3",
-    .long_name         = NULL_IF_CONFIG_SMALL("AVS3-P2/IEEE1857.10"),
-    .extensions        = "avs3",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_AVS3,
+const FFOutputFormat ff_avs3_muxer = {
+    .p.name            = "avs3",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("AVS3-P2/IEEE1857.10"),
+    .p.extensions      = "avs3",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_AVS3,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 
 #if CONFIG_CAVSVIDEO_MUXER
-const AVOutputFormat ff_cavsvideo_muxer = {
-    .name              = "cavsvideo",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw Chinese AVS (Audio Video Standard) video"),
-    .extensions        = "cavs",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_CAVS,
+const FFOutputFormat ff_cavsvideo_muxer = {
+    .p.name            = "cavsvideo",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw Chinese AVS (Audio Video Standard) video"),
+    .p.extensions      = "cavs",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_CAVS,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_CODEC2RAW_MUXER
-const AVOutputFormat ff_codec2raw_muxer = {
-    .name              = "codec2raw",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw codec2 muxer"),
-    .audio_codec       = AV_CODEC_ID_CODEC2,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_codec2raw_muxer = {
+    .p.name            = "codec2raw",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw codec2 muxer"),
+    .p.audio_codec     = AV_CODEC_ID_CODEC2,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 
 #if CONFIG_DATA_MUXER
-const AVOutputFormat ff_data_muxer = {
-    .name              = "data",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw data"),
+const FFOutputFormat ff_data_muxer = {
+    .p.name            = "data",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw data"),
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_DFPWM_MUXER
-const AVOutputFormat ff_dfpwm_muxer = {
-    .name              = "dfpwm",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw DFPWM1a"),
-    .extensions        = "dfpwm",
-    .audio_codec       = AV_CODEC_ID_DFPWM,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_dfpwm_muxer = {
+    .p.name            = "dfpwm",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw DFPWM1a"),
+    .p.extensions      = "dfpwm",
+    .p.audio_codec     = AV_CODEC_ID_DFPWM,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_DIRAC_MUXER
-const AVOutputFormat ff_dirac_muxer = {
-    .name              = "dirac",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw Dirac"),
-    .extensions        = "drc,vc2",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_DIRAC,
+const FFOutputFormat ff_dirac_muxer = {
+    .p.name            = "dirac",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw Dirac"),
+    .p.extensions      = "drc,vc2",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_DIRAC,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_DNXHD_MUXER
-const AVOutputFormat ff_dnxhd_muxer = {
-    .name              = "dnxhd",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
-    .extensions        = "dnxhd,dnxhr",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_DNXHD,
+const FFOutputFormat ff_dnxhd_muxer = {
+    .p.name            = "dnxhd",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
+    .p.extensions      = "dnxhd,dnxhr",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_DNXHD,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_DTS_MUXER
-const AVOutputFormat ff_dts_muxer = {
-    .name              = "dts",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw DTS"),
-    .mime_type         = "audio/x-dca",
-    .extensions        = "dts",
-    .audio_codec       = AV_CODEC_ID_DTS,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_dts_muxer = {
+    .p.name            = "dts",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw DTS"),
+    .p.mime_type       = "audio/x-dca",
+    .p.extensions      = "dts",
+    .p.audio_codec     = AV_CODEC_ID_DTS,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_EAC3_MUXER
-const AVOutputFormat ff_eac3_muxer = {
-    .name              = "eac3",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw E-AC-3"),
-    .mime_type         = "audio/x-eac3",
-    .extensions        = "eac3,ec3",
-    .audio_codec       = AV_CODEC_ID_EAC3,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_eac3_muxer = {
+    .p.name            = "eac3",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw E-AC-3"),
+    .p.mime_type       = "audio/x-eac3",
+    .p.extensions      = "eac3,ec3",
+    .p.audio_codec     = AV_CODEC_ID_EAC3,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_G722_MUXER
-const AVOutputFormat ff_g722_muxer = {
-    .name              = "g722",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw G.722"),
-    .mime_type         = "audio/G722",
-    .extensions        = "g722",
-    .audio_codec       = AV_CODEC_ID_ADPCM_G722,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_g722_muxer = {
+    .p.name            = "g722",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw G.722"),
+    .p.mime_type       = "audio/G722",
+    .p.extensions      = "g722",
+    .p.audio_codec     = AV_CODEC_ID_ADPCM_G722,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_G723_1_MUXER
-const AVOutputFormat ff_g723_1_muxer = {
-    .name              = "g723_1",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw G.723.1"),
-    .mime_type         = "audio/g723",
-    .extensions        = "tco,rco",
-    .audio_codec       = AV_CODEC_ID_G723_1,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_g723_1_muxer = {
+    .p.name            = "g723_1",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw G.723.1"),
+    .p.mime_type       = "audio/g723",
+    .p.extensions      = "tco,rco",
+    .p.audio_codec     = AV_CODEC_ID_G723_1,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_G726_MUXER
-const AVOutputFormat ff_g726_muxer = {
-    .name              = "g726",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw big-endian G.726 (\"left-justified\")"),
-    .audio_codec       = AV_CODEC_ID_ADPCM_G726,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_g726_muxer = {
+    .p.name            = "g726",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw big-endian G.726 (\"left-justified\")"),
+    .p.audio_codec     = AV_CODEC_ID_ADPCM_G726,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_G726LE_MUXER
-const AVOutputFormat ff_g726le_muxer = {
-    .name              = "g726le",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw little-endian G.726 (\"right-justified\")"),
-    .audio_codec       = AV_CODEC_ID_ADPCM_G726LE,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_g726le_muxer = {
+    .p.name            = "g726le",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw little-endian G.726 (\"right-justified\")"),
+    .p.audio_codec     = AV_CODEC_ID_ADPCM_G726LE,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_GSM_MUXER
-const AVOutputFormat ff_gsm_muxer = {
-    .name              = "gsm",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw GSM"),
-    .mime_type         = "audio/x-gsm",
-    .extensions        = "gsm",
-    .audio_codec       = AV_CODEC_ID_GSM,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_gsm_muxer = {
+    .p.name            = "gsm",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw GSM"),
+    .p.mime_type       = "audio/x-gsm",
+    .p.extensions      = "gsm",
+    .p.audio_codec     = AV_CODEC_ID_GSM,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_H261_MUXER
-const AVOutputFormat ff_h261_muxer = {
-    .name              = "h261",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw H.261"),
-    .mime_type         = "video/x-h261",
-    .extensions        = "h261",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_H261,
+const FFOutputFormat ff_h261_muxer = {
+    .p.name            = "h261",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw H.261"),
+    .p.mime_type       = "video/x-h261",
+    .p.extensions      = "h261",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_H261,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_H263_MUXER
-const AVOutputFormat ff_h263_muxer = {
-    .name              = "h263",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw H.263"),
-    .mime_type         = "video/x-h263",
-    .extensions        = "h263",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_H263,
+const FFOutputFormat ff_h263_muxer = {
+    .p.name            = "h263",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw H.263"),
+    .p.mime_type       = "video/x-h263",
+    .p.extensions      = "h263",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_H263,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
@@ -365,16 +365,16 @@ static int h264_check_bitstream(AVFormatContext *s, AVStream *st,
     return 1;
 }
 
-const AVOutputFormat ff_h264_muxer = {
-    .name              = "h264",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw H.264 video"),
-    .extensions        = "h264,264",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_H264,
+const FFOutputFormat ff_h264_muxer = {
+    .p.name            = "h264",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw H.264 video"),
+    .p.extensions      = "h264,264",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_H264,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
     .check_bitstream   = h264_check_bitstream,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
@@ -388,97 +388,97 @@ static int hevc_check_bitstream(AVFormatContext *s, AVStream *st,
     return 1;
 }
 
-const AVOutputFormat ff_hevc_muxer = {
-    .name              = "hevc",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw HEVC video"),
-    .extensions        = "hevc,h265,265",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_HEVC,
+const FFOutputFormat ff_hevc_muxer = {
+    .p.name            = "hevc",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw HEVC video"),
+    .p.extensions      = "hevc,h265,265",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_HEVC,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
     .check_bitstream   = hevc_check_bitstream,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_M4V_MUXER
-const AVOutputFormat ff_m4v_muxer = {
-    .name              = "m4v",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw MPEG-4 video"),
-    .extensions        = "m4v",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_MPEG4,
+const FFOutputFormat ff_m4v_muxer = {
+    .p.name            = "m4v",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw MPEG-4 video"),
+    .p.extensions      = "m4v",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_MPEG4,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_MJPEG_MUXER
-const AVOutputFormat ff_mjpeg_muxer = {
-    .name              = "mjpeg",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw MJPEG video"),
-    .mime_type         = "video/x-mjpeg",
-    .extensions        = "mjpg,mjpeg",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_MJPEG,
+const FFOutputFormat ff_mjpeg_muxer = {
+    .p.name            = "mjpeg",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw MJPEG video"),
+    .p.mime_type       = "video/x-mjpeg",
+    .p.extensions      = "mjpg,mjpeg",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_MJPEG,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_MLP_MUXER
-const AVOutputFormat ff_mlp_muxer = {
-    .name              = "mlp",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw MLP"),
-    .extensions        = "mlp",
-    .audio_codec       = AV_CODEC_ID_MLP,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_mlp_muxer = {
+    .p.name            = "mlp",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw MLP"),
+    .p.extensions      = "mlp",
+    .p.audio_codec     = AV_CODEC_ID_MLP,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_MP2_MUXER
-const AVOutputFormat ff_mp2_muxer = {
-    .name              = "mp2",
-    .long_name         = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
-    .mime_type         = "audio/mpeg",
-    .extensions        = "mp2,m2a,mpa",
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_mp2_muxer = {
+    .p.name            = "mp2",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
+    .p.mime_type       = "audio/mpeg",
+    .p.extensions      = "mp2,m2a,mpa",
+    .p.audio_codec     = AV_CODEC_ID_MP2,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_MPEG1VIDEO_MUXER
-const AVOutputFormat ff_mpeg1video_muxer = {
-    .name              = "mpeg1video",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw MPEG-1 video"),
-    .mime_type         = "video/mpeg",
-    .extensions        = "mpg,mpeg,m1v",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_MPEG1VIDEO,
+const FFOutputFormat ff_mpeg1video_muxer = {
+    .p.name            = "mpeg1video",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw MPEG-1 video"),
+    .p.mime_type       = "video/mpeg",
+    .p.extensions      = "mpg,mpeg,m1v",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_MPEG1VIDEO,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_MPEG2VIDEO_MUXER
-const AVOutputFormat ff_mpeg2video_muxer = {
-    .name              = "mpeg2video",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw MPEG-2 video"),
-    .extensions        = "m2v",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
+const FFOutputFormat ff_mpeg2video_muxer = {
+    .p.name            = "mpeg2video",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw MPEG-2 video"),
+    .p.extensions      = "m2v",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_MPEG2VIDEO,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
@@ -489,66 +489,66 @@ static int obu_check_bitstream(AVFormatContext *s, AVStream *st,
     return ff_stream_add_bitstream_filter(st, "av1_metadata", "td=insert");
 }
 
-const AVOutputFormat ff_obu_muxer = {
-    .name              = "obu",
-    .long_name         = NULL_IF_CONFIG_SMALL("AV1 low overhead OBU"),
-    .extensions        = "obu",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_AV1,
+const FFOutputFormat ff_obu_muxer = {
+    .p.name            = "obu",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("AV1 low overhead OBU"),
+    .p.extensions      = "obu",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_AV1,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
     .check_bitstream   = obu_check_bitstream,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_RAWVIDEO_MUXER
-const AVOutputFormat ff_rawvideo_muxer = {
-    .name              = "rawvideo",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw video"),
-    .extensions        = "yuv,rgb",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+const FFOutputFormat ff_rawvideo_muxer = {
+    .p.name            = "rawvideo",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw video"),
+    .p.extensions      = "yuv,rgb",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_RAWVIDEO,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_SBC_MUXER
-const AVOutputFormat ff_sbc_muxer = {
-    .name              = "sbc",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw SBC"),
-    .mime_type         = "audio/x-sbc",
-    .extensions        = "sbc,msbc",
-    .audio_codec       = AV_CODEC_ID_SBC,
+const FFOutputFormat ff_sbc_muxer = {
+    .p.name            = "sbc",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw SBC"),
+    .p.mime_type       = "audio/x-sbc",
+    .p.extensions      = "sbc,msbc",
+    .p.audio_codec     = AV_CODEC_ID_SBC,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_TRUEHD_MUXER
-const AVOutputFormat ff_truehd_muxer = {
-    .name              = "truehd",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw TrueHD"),
-    .extensions        = "thd",
-    .audio_codec       = AV_CODEC_ID_TRUEHD,
-    .video_codec       = AV_CODEC_ID_NONE,
+const FFOutputFormat ff_truehd_muxer = {
+    .p.name            = "truehd",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw TrueHD"),
+    .p.extensions      = "thd",
+    .p.audio_codec     = AV_CODEC_ID_TRUEHD,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
 
 #if CONFIG_VC1_MUXER
-const AVOutputFormat ff_vc1_muxer = {
-    .name              = "vc1",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw VC-1 video"),
-    .extensions        = "vc1",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_VC1,
+const FFOutputFormat ff_vc1_muxer = {
+    .p.name            = "vc1",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw VC-1 video"),
+    .p.extensions      = "vc1",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_VC1,
     .init              = force_one_stream,
     .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
 #endif
diff --git a/libavformat/rmenc.c b/libavformat/rmenc.c
index 1fba092b888..0d001224cb6 100644
--- a/libavformat/rmenc.c
+++ b/libavformat/rmenc.c
@@ -20,6 +20,7 @@
  */
 #include "avformat.h"
 #include "avio_internal.h"
+#include "mux.h"
 #include "rm.h"
 #include "libavutil/dict.h"
 
@@ -465,16 +466,16 @@ static int rm_write_trailer(AVFormatContext *s)
 }
 
 
-const AVOutputFormat ff_rm_muxer = {
-    .name              = "rm",
-    .long_name         = NULL_IF_CONFIG_SMALL("RealMedia"),
-    .mime_type         = "application/vnd.rn-realmedia",
-    .extensions        = "rm,ra",
+const FFOutputFormat ff_rm_muxer = {
+    .p.name            = "rm",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("RealMedia"),
+    .p.mime_type       = "application/vnd.rn-realmedia",
+    .p.extensions      = "rm,ra",
     .priv_data_size    = sizeof(RMMuxContext),
-    .audio_codec       = AV_CODEC_ID_AC3,
-    .video_codec       = AV_CODEC_ID_RV10,
+    .p.audio_codec     = AV_CODEC_ID_AC3,
+    .p.video_codec     = AV_CODEC_ID_RV10,
     .write_header      = rm_write_header,
     .write_packet      = rm_write_packet,
     .write_trailer     = rm_write_trailer,
-    .codec_tag         = (const AVCodecTag* const []){ ff_rm_codec_tags, 0 },
+    .p.codec_tag       = (const AVCodecTag* const []){ ff_rm_codec_tags, 0 },
 };
diff --git a/libavformat/rsoenc.c b/libavformat/rsoenc.c
index 858b53f6c6b..fe22e22812a 100644
--- a/libavformat/rsoenc.c
+++ b/libavformat/rsoenc.c
@@ -22,6 +22,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "riff.h"
 #include "rso.h"
@@ -91,15 +92,15 @@ static int rso_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_rso_muxer = {
-    .name           =   "rso",
-    .long_name      =   NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
-    .extensions     =   "rso",
-    .audio_codec    =   AV_CODEC_ID_PCM_U8,
-    .video_codec    =   AV_CODEC_ID_NONE,
+const FFOutputFormat ff_rso_muxer = {
+    .p.name         =   "rso",
+    .p.long_name    =   NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
+    .p.extensions   =   "rso",
+    .p.audio_codec  =   AV_CODEC_ID_PCM_U8,
+    .p.video_codec  =   AV_CODEC_ID_NONE,
     .write_header   =   rso_write_header,
     .write_packet   =   ff_raw_write_packet,
     .write_trailer  =   rso_write_trailer,
-    .codec_tag      =   ff_rso_codec_tags_list,
-    .flags          =   AVFMT_NOTIMESTAMPS,
+    .p.codec_tag    =   ff_rso_codec_tags_list,
+    .p.flags        =   AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index ce629a80954..a8d296a1542 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -22,6 +22,7 @@
 #include "avformat.h"
 #include "mpegts.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/random_seed.h"
 #include "libavutil/opt.h"
@@ -659,15 +660,15 @@ static int rtp_write_trailer(AVFormatContext *s1)
     return 0;
 }
 
-const AVOutputFormat ff_rtp_muxer = {
-    .name              = "rtp",
-    .long_name         = NULL_IF_CONFIG_SMALL("RTP output"),
+const FFOutputFormat ff_rtp_muxer = {
+    .p.name            = "rtp",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("RTP output"),
     .priv_data_size    = sizeof(RTPMuxContext),
-    .audio_codec       = AV_CODEC_ID_PCM_MULAW,
-    .video_codec       = AV_CODEC_ID_MPEG4,
+    .p.audio_codec     = AV_CODEC_ID_PCM_MULAW,
+    .p.video_codec     = AV_CODEC_ID_MPEG4,
     .write_header      = rtp_write_header,
     .write_packet      = rtp_write_packet,
     .write_trailer     = rtp_write_trailer,
-    .priv_class        = &rtp_muxer_class,
-    .flags             = AVFMT_TS_NONSTRICT,
+    .p.priv_class      = &rtp_muxer_class,
+    .p.flags           = AVFMT_TS_NONSTRICT,
 };
diff --git a/libavformat/rtpenc_mpegts.c b/libavformat/rtpenc_mpegts.c
index fdc759c1793..0d6403a0484 100644
--- a/libavformat/rtpenc_mpegts.c
+++ b/libavformat/rtpenc_mpegts.c
@@ -23,6 +23,7 @@
 #include "libavutil/opt.h"
 #include "avformat.h"
 #include "avio_internal.h"
+#include "mux.h"
 
 typedef struct MuxChain {
     const AVClass *class;
@@ -187,14 +188,14 @@ static const AVClass rtp_mpegts_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_rtp_mpegts_muxer = {
-    .name              = "rtp_mpegts",
-    .long_name         = NULL_IF_CONFIG_SMALL("RTP/mpegts output format"),
+const FFOutputFormat ff_rtp_mpegts_muxer = {
+    .p.name            = "rtp_mpegts",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("RTP/mpegts output format"),
     .priv_data_size    = sizeof(MuxChain),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_MPEG4,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_MPEG4,
     .write_header      = rtp_mpegts_write_header,
     .write_packet      = rtp_mpegts_write_packet,
     .write_trailer     = rtp_mpegts_write_close,
-    .priv_class        = &rtp_mpegts_class,
+    .p.priv_class      = &rtp_mpegts_class,
 };
diff --git a/libavformat/rtspenc.c b/libavformat/rtspenc.c
index 21b204381b3..3d444ccbfd8 100644
--- a/libavformat/rtspenc.c
+++ b/libavformat/rtspenc.c
@@ -244,15 +244,15 @@ static int rtsp_write_close(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_rtsp_muxer = {
-    .name              = "rtsp",
-    .long_name         = NULL_IF_CONFIG_SMALL("RTSP output"),
+const FFOutputFormat ff_rtsp_muxer = {
+    .p.name            = "rtsp",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("RTSP output"),
     .priv_data_size    = sizeof(RTSPState),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_MPEG4,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_MPEG4,
     .write_header      = rtsp_write_header,
     .write_packet      = rtsp_write_packet,
     .write_trailer     = rtsp_write_close,
-    .flags             = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
-    .priv_class        = &rtsp_muxer_class,
+    .p.flags           = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
+    .p.priv_class      = &rtsp_muxer_class,
 };
diff --git a/libavformat/sapenc.c b/libavformat/sapenc.c
index 8eb9d3b92a7..28839b837ff 100644
--- a/libavformat/sapenc.c
+++ b/libavformat/sapenc.c
@@ -268,14 +268,14 @@ static int sap_write_packet(AVFormatContext *s, AVPacket *pkt)
     return ff_write_chained(rtpctx, 0, pkt, s, 0);
 }
 
-const AVOutputFormat ff_sap_muxer = {
-    .name              = "sap",
-    .long_name         = NULL_IF_CONFIG_SMALL("SAP output"),
+const FFOutputFormat ff_sap_muxer = {
+    .p.name            = "sap",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("SAP output"),
     .priv_data_size    = sizeof(struct SAPState),
-    .audio_codec       = AV_CODEC_ID_AAC,
-    .video_codec       = AV_CODEC_ID_MPEG4,
+    .p.audio_codec     = AV_CODEC_ID_AAC,
+    .p.video_codec     = AV_CODEC_ID_MPEG4,
     .write_header      = sap_write_header,
     .write_packet      = sap_write_packet,
     .write_trailer     = sap_write_close,
-    .flags             = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
+    .p.flags           = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
 };
diff --git a/libavformat/sccenc.c b/libavformat/sccenc.c
index 2b924ba6e77..ea7865ecf22 100644
--- a/libavformat/sccenc.c
+++ b/libavformat/sccenc.c
@@ -21,6 +21,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/log.h"
 #include "libavutil/intreadwrite.h"
 
@@ -111,13 +112,13 @@ static int scc_write_packet(AVFormatContext *avf, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_scc_muxer = {
-    .name           = "scc",
-    .long_name      = NULL_IF_CONFIG_SMALL("Scenarist Closed Captions"),
-    .extensions     = "scc",
+const FFOutputFormat ff_scc_muxer = {
+    .p.name           = "scc",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("Scenarist Closed Captions"),
+    .p.extensions     = "scc",
+    .p.flags          = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
+    .p.subtitle_codec = AV_CODEC_ID_EIA_608,
     .priv_data_size = sizeof(SCCContext),
     .write_header   = scc_write_header,
     .write_packet   = scc_write_packet,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
-    .subtitle_codec = AV_CODEC_ID_EIA_608,
 };
diff --git a/libavformat/segafilmenc.c b/libavformat/segafilmenc.c
index 42d56fccd61..ba06dc655d0 100644
--- a/libavformat/segafilmenc.c
+++ b/libavformat/segafilmenc.c
@@ -280,13 +280,13 @@ static void film_deinit(AVFormatContext *format_context)
     ffio_free_dyn_buf(&film->header);
 }
 
-const AVOutputFormat ff_segafilm_muxer = {
-    .name           = "film_cpk",
-    .long_name      = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),
-    .extensions     = "cpk",
+const FFOutputFormat ff_segafilm_muxer = {
+    .p.name         = "film_cpk",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),
+    .p.extensions   = "cpk",
     .priv_data_size = sizeof(FILMOutputContext),
-    .audio_codec    = AV_CODEC_ID_PCM_S16BE_PLANAR,
-    .video_codec    = AV_CODEC_ID_CINEPAK,
+    .p.audio_codec  = AV_CODEC_ID_PCM_S16BE_PLANAR,
+    .p.video_codec  = AV_CODEC_ID_CINEPAK,
     .init           = film_init,
     .write_trailer  = film_write_header,
     .write_packet   = film_write_packet,
diff --git a/libavformat/segment.c b/libavformat/segment.c
index 80e4bf851c1..eb629b342ce 100644
--- a/libavformat/segment.c
+++ b/libavformat/segment.c
@@ -976,7 +976,8 @@ calc_times:
            av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base));
 
     ret = ff_write_chained(seg->avf, pkt->stream_index, pkt, s,
-                           seg->initial_offset || seg->reset_timestamps || seg->avf->oformat->interleave_packet);
+                           seg->initial_offset || seg->reset_timestamps ||
+                           ffofmt(seg->avf->oformat)->interleave_packet);
 
 fail:
     /* Use st->index here as the packet returned from ff_write_chained()
@@ -1016,9 +1017,9 @@ static int seg_check_bitstream(AVFormatContext *s, AVStream *st,
 {
     SegmentContext *seg = s->priv_data;
     AVFormatContext *oc = seg->avf;
-    if (oc->oformat->check_bitstream) {
+    if (ffofmt(oc->oformat)->check_bitstream) {
         AVStream *const ost = oc->streams[st->index];
-        int ret = oc->oformat->check_bitstream(oc, ost, pkt);
+        int ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, pkt);
         if (ret == 1) {
             FFStream *const  sti = ffstream(st);
             FFStream *const osti = ffstream(ost);
@@ -1085,33 +1086,33 @@ static const AVClass seg_class = {
 };
 
 #if CONFIG_SEGMENT_MUXER
-const AVOutputFormat ff_segment_muxer = {
-    .name           = "segment",
-    .long_name      = NULL_IF_CONFIG_SMALL("segment"),
+const FFOutputFormat ff_segment_muxer = {
+    .p.name          = "segment",
+    .p.long_name     = NULL_IF_CONFIG_SMALL("segment"),
+    .p.flags         = AVFMT_NOFILE|AVFMT_GLOBALHEADER,
+    .p.priv_class    = &seg_class,
     .priv_data_size = sizeof(SegmentContext),
-    .flags          = AVFMT_NOFILE|AVFMT_GLOBALHEADER,
     .init           = seg_init,
     .write_header   = seg_write_header,
     .write_packet   = seg_write_packet,
     .write_trailer  = seg_write_trailer,
     .deinit         = seg_free,
     .check_bitstream = seg_check_bitstream,
-    .priv_class     = &seg_class,
 };
 #endif
 
 #if CONFIG_STREAM_SEGMENT_MUXER
-const AVOutputFormat ff_stream_segment_muxer = {
-    .name           = "stream_segment,ssegment",
-    .long_name      = NULL_IF_CONFIG_SMALL("streaming segment muxer"),
-    .priv_data_size = sizeof(SegmentContext),
-    .flags          = AVFMT_NOFILE,
+const FFOutputFormat ff_stream_segment_muxer = {
+    .p.name          = "stream_segment,ssegment",
+    .p.long_name     = NULL_IF_CONFIG_SMALL("streaming segment muxer"),
+    .p.flags         = AVFMT_NOFILE,
+    .p.priv_class    = &seg_class,
+    .priv_data_size  = sizeof(SegmentContext),
     .init           = seg_init,
     .write_header   = seg_write_header,
     .write_packet   = seg_write_packet,
     .write_trailer  = seg_write_trailer,
     .deinit         = seg_free,
     .check_bitstream = seg_check_bitstream,
-    .priv_class     = &seg_class,
 };
 #endif
diff --git a/libavformat/smjpegenc.c b/libavformat/smjpegenc.c
index edba08cf9b7..56907c96f7a 100644
--- a/libavformat/smjpegenc.c
+++ b/libavformat/smjpegenc.c
@@ -133,15 +133,15 @@ static int smjpeg_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_smjpeg_muxer = {
-    .name           = "smjpeg",
-    .long_name      = NULL_IF_CONFIG_SMALL("Loki SDL MJPEG"),
+const FFOutputFormat ff_smjpeg_muxer = {
+    .p.name         = "smjpeg",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Loki SDL MJPEG"),
     .priv_data_size = sizeof(SMJPEGMuxContext),
-    .audio_codec    = AV_CODEC_ID_PCM_S16LE,
-    .video_codec    = AV_CODEC_ID_MJPEG,
+    .p.audio_codec  = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec  = AV_CODEC_ID_MJPEG,
     .write_header   = smjpeg_write_header,
     .write_packet   = smjpeg_write_packet,
     .write_trailer  = smjpeg_write_trailer,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT,
-    .codec_tag      = (const AVCodecTag *const []){ ff_codec_smjpeg_video_tags, ff_codec_smjpeg_audio_tags, 0 },
+    .p.flags        = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT,
+    .p.codec_tag    = (const AVCodecTag *const []){ ff_codec_smjpeg_video_tags, ff_codec_smjpeg_audio_tags, 0 },
 };
diff --git a/libavformat/smoothstreamingenc.c b/libavformat/smoothstreamingenc.c
index ade6d5723b2..66e6313934a 100644
--- a/libavformat/smoothstreamingenc.c
+++ b/libavformat/smoothstreamingenc.c
@@ -637,16 +637,16 @@ static const AVClass ism_class = {
 };
 
 
-const AVOutputFormat ff_smoothstreaming_muxer = {
-    .name           = "smoothstreaming",
-    .long_name      = NULL_IF_CONFIG_SMALL("Smooth Streaming Muxer"),
+const FFOutputFormat ff_smoothstreaming_muxer = {
+    .p.name         = "smoothstreaming",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Smooth Streaming Muxer"),
+    .p.audio_codec  = AV_CODEC_ID_AAC,
+    .p.video_codec  = AV_CODEC_ID_H264,
+    .p.flags        = AVFMT_GLOBALHEADER | AVFMT_NOFILE,
+    .p.priv_class   = &ism_class,
     .priv_data_size = sizeof(SmoothStreamingContext),
-    .audio_codec    = AV_CODEC_ID_AAC,
-    .video_codec    = AV_CODEC_ID_H264,
-    .flags          = AVFMT_GLOBALHEADER | AVFMT_NOFILE,
     .write_header   = ism_write_header,
     .write_packet   = ism_write_packet,
     .write_trailer  = ism_write_trailer,
     .deinit         = ism_free,
-    .priv_class     = &ism_class,
 };
diff --git a/libavformat/soxenc.c b/libavformat/soxenc.c
index ac01f97df5c..062b4a3fae2 100644
--- a/libavformat/soxenc.c
+++ b/libavformat/soxenc.c
@@ -34,6 +34,7 @@
 #include "libavutil/dict.h"
 #include "avformat.h"
 #include "avio_internal.h"
+#include "mux.h"
 #include "rawenc.h"
 #include "sox.h"
 
@@ -104,15 +105,15 @@ static int sox_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_sox_muxer = {
-    .name              = "sox",
-    .long_name         = NULL_IF_CONFIG_SMALL("SoX native"),
-    .extensions        = "sox",
+const FFOutputFormat ff_sox_muxer = {
+    .p.name            = "sox",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("SoX native"),
+    .p.extensions      = "sox",
     .priv_data_size    = sizeof(SoXContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S32LE,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S32LE,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .write_header      = sox_write_header,
     .write_packet      = ff_raw_write_packet,
     .write_trailer     = sox_write_trailer,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/spdifenc.c b/libavformat/spdifenc.c
index 2861f828b42..ca386746268 100644
--- a/libavformat/spdifenc.c
+++ b/libavformat/spdifenc.c
@@ -48,6 +48,7 @@
 
 #include "avformat.h"
 #include "avio_internal.h"
+#include "mux.h"
 #include "spdif.h"
 #include "libavcodec/ac3defs.h"
 #include "libavcodec/adts_parser.h"
@@ -673,16 +674,16 @@ static int spdif_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_spdif_muxer = {
-    .name              = "spdif",
-    .long_name         = NULL_IF_CONFIG_SMALL("IEC 61937 (used on S/PDIF - IEC958)"),
-    .extensions        = "spdif",
+const FFOutputFormat ff_spdif_muxer = {
+    .p.name            = "spdif",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("IEC 61937 (used on S/PDIF - IEC958)"),
+    .p.extensions      = "spdif",
     .priv_data_size    = sizeof(IEC61937Context),
-    .audio_codec       = AV_CODEC_ID_AC3,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_AC3,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .write_header      = spdif_write_header,
     .write_packet      = spdif_write_packet,
     .deinit            = spdif_deinit,
-    .flags             = AVFMT_NOTIMESTAMPS,
-    .priv_class        = &spdif_class,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
+    .p.priv_class      = &spdif_class,
 };
diff --git a/libavformat/srtenc.c b/libavformat/srtenc.c
index 7f6171edd34..30dc59e0f8d 100644
--- a/libavformat/srtenc.c
+++ b/libavformat/srtenc.c
@@ -21,6 +21,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/log.h"
 #include "libavutil/intreadwrite.h"
 
@@ -96,14 +97,14 @@ static int srt_write_packet(AVFormatContext *avf, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_srt_muxer = {
-    .name           = "srt",
-    .long_name      = NULL_IF_CONFIG_SMALL("SubRip subtitle"),
-    .mime_type      = "application/x-subrip",
-    .extensions     = "srt",
+const FFOutputFormat ff_srt_muxer = {
+    .p.name           = "srt",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("SubRip subtitle"),
+    .p.mime_type      = "application/x-subrip",
+    .p.extensions     = "srt",
+    .p.flags          = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
+    .p.subtitle_codec = AV_CODEC_ID_SUBRIP,
     .priv_data_size = sizeof(SRTContext),
     .write_header   = srt_write_header,
     .write_packet   = srt_write_packet,
-    .flags          = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
-    .subtitle_codec = AV_CODEC_ID_SUBRIP,
 };
diff --git a/libavformat/supenc.c b/libavformat/supenc.c
index c45d8a5321b..4af92fefa2e 100644
--- a/libavformat/supenc.c
+++ b/libavformat/supenc.c
@@ -21,6 +21,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "libavutil/intreadwrite.h"
 
 #define SUP_PGS_MAGIC 0x5047 /* "PG", big endian */
@@ -84,13 +85,13 @@ static int sup_write_header(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_sup_muxer = {
-    .name           = "sup",
-    .long_name      = NULL_IF_CONFIG_SMALL("raw HDMV Presentation Graphic Stream subtitles"),
-    .extensions     = "sup",
-    .mime_type      = "application/x-pgs",
-    .subtitle_codec = AV_CODEC_ID_HDMV_PGS_SUBTITLE,
+const FFOutputFormat ff_sup_muxer = {
+    .p.name           = "sup",
+    .p.long_name      = NULL_IF_CONFIG_SMALL("raw HDMV Presentation Graphic Stream subtitles"),
+    .p.extensions     = "sup",
+    .p.mime_type      = "application/x-pgs",
+    .p.subtitle_codec = AV_CODEC_ID_HDMV_PGS_SUBTITLE,
+    .p.flags          = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
     .write_header   = sup_write_header,
     .write_packet   = sup_write_packet,
-    .flags          = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
 };
diff --git a/libavformat/swfenc.c b/libavformat/swfenc.c
index 75b892087fe..f9ac69539b4 100644
--- a/libavformat/swfenc.c
+++ b/libavformat/swfenc.c
@@ -27,6 +27,7 @@
 #include "libavutil/fifo.h"
 #include "avformat.h"
 #include "flv.h"
+#include "mux.h"
 #include "swf.h"
 
 #define AUDIO_FIFO_SIZE 65536
@@ -547,33 +548,33 @@ static void swf_deinit(AVFormatContext *s)
 }
 
 #if CONFIG_SWF_MUXER
-const AVOutputFormat ff_swf_muxer = {
-    .name              = "swf",
-    .long_name         = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash)"),
-    .mime_type         = "application/x-shockwave-flash",
-    .extensions        = "swf",
+const FFOutputFormat ff_swf_muxer = {
+    .p.name            = "swf",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash)"),
+    .p.mime_type       = "application/x-shockwave-flash",
+    .p.extensions      = "swf",
     .priv_data_size    = sizeof(SWFEncContext),
-    .audio_codec       = AV_CODEC_ID_MP3,
-    .video_codec       = AV_CODEC_ID_FLV1,
+    .p.audio_codec     = AV_CODEC_ID_MP3,
+    .p.video_codec     = AV_CODEC_ID_FLV1,
     .write_header      = swf_write_header,
     .write_packet      = swf_write_packet,
     .write_trailer     = swf_write_trailer,
     .deinit            = swf_deinit,
-    .flags             = AVFMT_TS_NONSTRICT,
+    .p.flags           = AVFMT_TS_NONSTRICT,
 };
 #endif
 #if CONFIG_AVM2_MUXER
-const AVOutputFormat ff_avm2_muxer = {
-    .name              = "avm2",
-    .long_name         = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash) (AVM2)"),
-    .mime_type         = "application/x-shockwave-flash",
+const FFOutputFormat ff_avm2_muxer = {
+    .p.name            = "avm2",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash) (AVM2)"),
+    .p.mime_type       = "application/x-shockwave-flash",
     .priv_data_size    = sizeof(SWFEncContext),
-    .audio_codec       = AV_CODEC_ID_MP3,
-    .video_codec       = AV_CODEC_ID_FLV1,
+    .p.audio_codec     = AV_CODEC_ID_MP3,
+    .p.video_codec     = AV_CODEC_ID_FLV1,
     .write_header      = swf_write_header,
     .write_packet      = swf_write_packet,
     .write_trailer     = swf_write_trailer,
     .deinit            = swf_deinit,
-    .flags             = AVFMT_TS_NONSTRICT,
+    .p.flags           = AVFMT_TS_NONSTRICT,
 };
 #endif
diff --git a/libavformat/tee.c b/libavformat/tee.c
index dd408dd096c..960b2ea574b 100644
--- a/libavformat/tee.c
+++ b/libavformat/tee.c
@@ -602,13 +602,13 @@ static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
     return ret_all;
 }
 
-const AVOutputFormat ff_tee_muxer = {
-    .name              = "tee",
-    .long_name         = NULL_IF_CONFIG_SMALL("Multiple muxer tee"),
+const FFOutputFormat ff_tee_muxer = {
+    .p.name            = "tee",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Multiple muxer tee"),
     .priv_data_size    = sizeof(TeeContext),
     .write_header      = tee_write_header,
     .write_trailer     = tee_write_trailer,
     .write_packet      = tee_write_packet,
-    .priv_class        = &tee_muxer_class,
-    .flags             = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
+    .p.priv_class      = &tee_muxer_class,
+    .p.flags           = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
 };
diff --git a/libavformat/ttaenc.c b/libavformat/ttaenc.c
index 1938582bb3a..c7f7e065dc1 100644
--- a/libavformat/ttaenc.c
+++ b/libavformat/ttaenc.c
@@ -27,6 +27,7 @@
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 
 typedef struct TTAMuxContext {
     AVIOContext *seek_table;
@@ -165,14 +166,14 @@ static void tta_deinit(AVFormatContext *s)
     avpriv_packet_list_free(&tta->queue);
 }
 
-const AVOutputFormat ff_tta_muxer = {
-    .name              = "tta",
-    .long_name         = NULL_IF_CONFIG_SMALL("TTA (True Audio)"),
-    .mime_type         = "audio/x-tta",
-    .extensions        = "tta",
+const FFOutputFormat ff_tta_muxer = {
+    .p.name            = "tta",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("TTA (True Audio)"),
+    .p.mime_type       = "audio/x-tta",
+    .p.extensions      = "tta",
     .priv_data_size    = sizeof(TTAMuxContext),
-    .audio_codec       = AV_CODEC_ID_TTA,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_TTA,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = tta_init,
     .deinit            = tta_deinit,
     .write_header      = tta_write_header,
diff --git a/libavformat/ttmlenc.c b/libavformat/ttmlenc.c
index fc8069f7b56..212994be503 100644
--- a/libavformat/ttmlenc.c
+++ b/libavformat/ttmlenc.c
@@ -30,6 +30,7 @@
 #include "libavutil/avstring.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "ttmlenc.h"
 #include "libavcodec/ttmlenc.h"
 #include "libavutil/internal.h"
@@ -215,15 +216,15 @@ static int ttml_write_trailer(AVFormatContext *ctx)
     return 0;
 }
 
-const AVOutputFormat ff_ttml_muxer = {
-    .name              = "ttml",
-    .long_name         = NULL_IF_CONFIG_SMALL("TTML subtitle"),
-    .extensions        = "ttml",
-    .mime_type         = "text/ttml",
+const FFOutputFormat ff_ttml_muxer = {
+    .p.name            = "ttml",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("TTML subtitle"),
+    .p.extensions      = "ttml",
+    .p.mime_type       = "text/ttml",
     .priv_data_size    = sizeof(TTMLMuxContext),
-    .flags             = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
+    .p.flags           = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
                          AVFMT_TS_NONSTRICT,
-    .subtitle_codec    = AV_CODEC_ID_TTML,
+    .p.subtitle_codec  = AV_CODEC_ID_TTML,
     .write_header      = ttml_write_header,
     .write_packet      = ttml_write_packet,
     .write_trailer     = ttml_write_trailer,
diff --git a/libavformat/uncodedframecrcenc.c b/libavformat/uncodedframecrcenc.c
index 99990616d32..4c37ef6e5b2 100644
--- a/libavformat/uncodedframecrcenc.c
+++ b/libavformat/uncodedframecrcenc.c
@@ -165,14 +165,14 @@ static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
     return AVERROR(ENOSYS);
 }
 
-const AVOutputFormat ff_uncodedframecrc_muxer = {
-    .name              = "uncodedframecrc",
-    .long_name         = NULL_IF_CONFIG_SMALL("uncoded framecrc testing"),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+const FFOutputFormat ff_uncodedframecrc_muxer = {
+    .p.name              = "uncodedframecrc",
+    .p.long_name         = NULL_IF_CONFIG_SMALL("uncoded framecrc testing"),
+    .p.audio_codec       = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .p.flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
+                           AVFMT_TS_NEGATIVE,
     .write_header      = write_header,
     .write_packet      = write_packet,
     .write_uncoded_frame = write_frame,
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
-                         AVFMT_TS_NEGATIVE,
 };
diff --git a/libavformat/vc1testenc.c b/libavformat/vc1testenc.c
index 4bc95026f56..89b916deeb1 100644
--- a/libavformat/vc1testenc.c
+++ b/libavformat/vc1testenc.c
@@ -20,6 +20,7 @@
  */
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 typedef struct RCVContext {
     int frames;
@@ -80,13 +81,13 @@ static int vc1test_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_vc1t_muxer = {
-    .name              = "vc1test",
-    .long_name         = NULL_IF_CONFIG_SMALL("VC-1 test bitstream"),
-    .extensions        = "rcv",
+const FFOutputFormat ff_vc1t_muxer = {
+    .p.name            = "vc1test",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("VC-1 test bitstream"),
+    .p.extensions      = "rcv",
     .priv_data_size    = sizeof(RCVContext),
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_WMV3,
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_WMV3,
     .write_header      = vc1test_write_header,
     .write_packet      = vc1test_write_packet,
     .write_trailer     = vc1test_write_trailer,
diff --git a/libavformat/vocenc.c b/libavformat/vocenc.c
index 59c2bbba7b5..8739a177157 100644
--- a/libavformat/vocenc.c
+++ b/libavformat/vocenc.c
@@ -21,6 +21,7 @@
 
 #include "voc.h"
 #include "internal.h"
+#include "mux.h"
 
 
 typedef struct voc_enc_context {
@@ -96,17 +97,17 @@ static int voc_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_voc_muxer = {
-    .name              = "voc",
-    .long_name         = NULL_IF_CONFIG_SMALL("Creative Voice"),
-    .mime_type         = "audio/x-voc",
-    .extensions        = "voc",
+const FFOutputFormat ff_voc_muxer = {
+    .p.name            = "voc",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Creative Voice"),
+    .p.mime_type       = "audio/x-voc",
+    .p.extensions      = "voc",
     .priv_data_size    = sizeof(VocEncContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .write_header      = voc_write_header,
     .write_packet      = voc_write_packet,
     .write_trailer     = voc_write_trailer,
-    .codec_tag         = ff_voc_codec_tags_list,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.codec_tag       = ff_voc_codec_tags_list,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/wavenc.c b/libavformat/wavenc.c
index 3531a8f909d..c12c0909349 100644
--- a/libavformat/wavenc.c
+++ b/libavformat/wavenc.c
@@ -46,6 +46,7 @@
 #include "avio.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include "riff.h"
 
 #define RF64_AUTO   (-1)
@@ -506,21 +507,21 @@ static const AVClass wav_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_wav_muxer = {
-    .name              = "wav",
-    .long_name         = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
-    .mime_type         = "audio/x-wav",
-    .extensions        = "wav",
+const FFOutputFormat ff_wav_muxer = {
+    .p.name            = "wav",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
+    .p.mime_type       = "audio/x-wav",
+    .p.extensions      = "wav",
     .priv_data_size    = sizeof(WAVMuxContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .write_header      = wav_write_header,
     .write_packet      = wav_write_packet,
     .write_trailer     = wav_write_trailer,
     .deinit            = wav_deinit,
-    .flags             = AVFMT_TS_NONSTRICT,
-    .codec_tag         = ff_wav_codec_tags_list,
-    .priv_class        = &wav_muxer_class,
+    .p.flags           = AVFMT_TS_NONSTRICT,
+    .p.codec_tag       = ff_wav_codec_tags_list,
+    .p.priv_class      = &wav_muxer_class,
 };
 #endif /* CONFIG_WAV_MUXER */
 
@@ -615,18 +616,18 @@ static int w64_write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_w64_muxer = {
-    .name              = "w64",
-    .long_name         = NULL_IF_CONFIG_SMALL("Sony Wave64"),
-    .extensions        = "w64",
+const FFOutputFormat ff_w64_muxer = {
+    .p.name            = "w64",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Sony Wave64"),
+    .p.extensions      = "w64",
     .priv_data_size    = sizeof(WAVMuxContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_PCM_S16LE,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = w64_init,
     .write_header      = w64_write_header,
     .write_packet      = wav_write_packet,
     .write_trailer     = w64_write_trailer,
-    .flags             = AVFMT_TS_NONSTRICT,
-    .codec_tag         = ff_wav_codec_tags_list,
+    .p.flags           = AVFMT_TS_NONSTRICT,
+    .p.codec_tag       = ff_wav_codec_tags_list,
 };
 #endif /* CONFIG_W64_MUXER */
diff --git a/libavformat/webm_chunk.c b/libavformat/webm_chunk.c
index 916ed0cbaba..494a83f5078 100644
--- a/libavformat/webm_chunk.c
+++ b/libavformat/webm_chunk.c
@@ -292,18 +292,18 @@ static const AVClass webm_chunk_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_webm_chunk_muxer = {
-    .name           = "webm_chunk",
-    .long_name      = NULL_IF_CONFIG_SMALL("WebM Chunk Muxer"),
-    .mime_type      = "video/webm",
-    .extensions     = "chk",
-    .flags          = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_NEEDNUMBER |
+const FFOutputFormat ff_webm_chunk_muxer = {
+    .p.name         = "webm_chunk",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("WebM Chunk Muxer"),
+    .p.mime_type    = "video/webm",
+    .p.extensions   = "chk",
+    .p.flags        = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_NEEDNUMBER |
                       AVFMT_TS_NONSTRICT,
+    .p.priv_class   = &webm_chunk_class,
     .priv_data_size = sizeof(WebMChunkContext),
     .init           = webm_chunk_init,
     .write_header   = webm_chunk_write_header,
     .write_packet   = webm_chunk_write_packet,
     .write_trailer  = webm_chunk_write_trailer,
     .deinit         = webm_chunk_deinit,
-    .priv_class     = &webm_chunk_class,
 };
diff --git a/libavformat/webmdashenc.c b/libavformat/webmdashenc.c
index f8f2274556d..0d6c4a2072e 100644
--- a/libavformat/webmdashenc.c
+++ b/libavformat/webmdashenc.c
@@ -32,6 +32,7 @@
 
 #include "avformat.h"
 #include "matroska.h"
+#include "mux.h"
 
 #include "libavutil/avstring.h"
 #include "libavutil/dict.h"
@@ -540,13 +541,13 @@ static const AVClass webm_dash_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-const AVOutputFormat ff_webm_dash_manifest_muxer = {
-    .name              = "webm_dash_manifest",
-    .long_name         = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
-    .mime_type         = "application/xml",
-    .extensions        = "xml",
+const FFOutputFormat ff_webm_dash_manifest_muxer = {
+    .p.name            = "webm_dash_manifest",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
+    .p.mime_type       = "application/xml",
+    .p.extensions      = "xml",
     .priv_data_size    = sizeof(WebMDashMuxContext),
     .write_header      = webm_dash_manifest_write_header,
     .write_packet      = webm_dash_manifest_write_packet,
-    .priv_class        = &webm_dash_class,
+    .p.priv_class      = &webm_dash_class,
 };
diff --git a/libavformat/webpenc.c b/libavformat/webpenc.c
index 8a5c29201a8..b3f5bdc9b57 100644
--- a/libavformat/webpenc.c
+++ b/libavformat/webpenc.c
@@ -23,6 +23,7 @@
 #include "libavutil/opt.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 typedef struct WebpContext{
     AVClass *class;
@@ -208,15 +209,15 @@ static const AVClass webp_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
     .option     = options,
 };
-const AVOutputFormat ff_webp_muxer = {
-    .name           = "webp",
-    .long_name      = NULL_IF_CONFIG_SMALL("WebP"),
-    .extensions     = "webp",
+const FFOutputFormat ff_webp_muxer = {
+    .p.name         = "webp",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("WebP"),
+    .p.extensions   = "webp",
     .priv_data_size = sizeof(WebpContext),
-    .video_codec    = AV_CODEC_ID_WEBP,
+    .p.video_codec  = AV_CODEC_ID_WEBP,
     .init           = webp_init,
     .write_packet   = webp_write_packet,
     .write_trailer  = webp_write_trailer,
-    .priv_class     = &webp_muxer_class,
-    .flags          = AVFMT_VARIABLE_FPS,
+    .p.priv_class   = &webp_muxer_class,
+    .p.flags        = AVFMT_VARIABLE_FPS,
 };
diff --git a/libavformat/webvttenc.c b/libavformat/webvttenc.c
index fcff80c4bf3..13370453251 100644
--- a/libavformat/webvttenc.c
+++ b/libavformat/webvttenc.c
@@ -26,6 +26,7 @@
 
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 
 static void webvtt_write_time(AVIOContext *pb, int64_t millisec)
 {
@@ -102,13 +103,13 @@ static int webvtt_write_packet(AVFormatContext *ctx, AVPacket *pkt)
     return 0;
 }
 
-const AVOutputFormat ff_webvtt_muxer = {
-    .name              = "webvtt",
-    .long_name         = NULL_IF_CONFIG_SMALL("WebVTT subtitle"),
-    .extensions        = "vtt",
-    .mime_type         = "text/vtt",
-    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
-    .subtitle_codec    = AV_CODEC_ID_WEBVTT,
+const FFOutputFormat ff_webvtt_muxer = {
+    .p.name            = "webvtt",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("WebVTT subtitle"),
+    .p.extensions      = "vtt",
+    .p.mime_type       = "text/vtt",
+    .p.flags           = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
+    .p.subtitle_codec  = AV_CODEC_ID_WEBVTT,
     .write_header      = webvtt_write_header,
     .write_packet      = webvtt_write_packet,
 };
diff --git a/libavformat/westwood_audenc.c b/libavformat/westwood_audenc.c
index a2401eff5a7..84a871e4782 100644
--- a/libavformat/westwood_audenc.c
+++ b/libavformat/westwood_audenc.c
@@ -31,6 +31,7 @@
 #include "avformat.h"
 #include "avio_internal.h"
 #include "internal.h"
+#include "mux.h"
 #include <stdint.h>
 
 #define AUD_CHUNK_SIGNATURE 0x0000DEAF
@@ -125,13 +126,13 @@ static int wsaud_write_trailer(AVFormatContext *ctx)
     return 0;
 }
 
-const AVOutputFormat ff_wsaud_muxer = {
-    .name              = "wsaud",
-    .long_name         = NULL_IF_CONFIG_SMALL("Westwood Studios audio"),
-    .extensions        = "aud",
+const FFOutputFormat ff_wsaud_muxer = {
+    .p.name            = "wsaud",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("Westwood Studios audio"),
+    .p.extensions      = "aud",
     .priv_data_size    = sizeof(AUDMuxContext),
-    .audio_codec       = AV_CODEC_ID_ADPCM_IMA_WS,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_ADPCM_IMA_WS,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = wsaud_write_init,
     .write_header      = wsaud_write_header,
     .write_packet      = wsaud_write_packet,
diff --git a/libavformat/wtvenc.c b/libavformat/wtvenc.c
index 62dca62b062..c0e56216467 100644
--- a/libavformat/wtvenc.c
+++ b/libavformat/wtvenc.c
@@ -829,15 +829,15 @@ static int write_trailer(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_wtv_muxer = {
-    .name           = "wtv",
-    .long_name      = NULL_IF_CONFIG_SMALL("Windows Television (WTV)"),
-    .extensions     = "wtv",
+const FFOutputFormat ff_wtv_muxer = {
+    .p.name         = "wtv",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("Windows Television (WTV)"),
+    .p.extensions   = "wtv",
     .priv_data_size = sizeof(WtvContext),
-    .audio_codec    = AV_CODEC_ID_AC3,
-    .video_codec    = AV_CODEC_ID_MPEG2VIDEO,
+    .p.audio_codec  = AV_CODEC_ID_AC3,
+    .p.video_codec  = AV_CODEC_ID_MPEG2VIDEO,
     .write_header   = write_header,
     .write_packet   = write_packet,
     .write_trailer  = write_trailer,
-    .codec_tag      = ff_riff_codec_tags_list,
+    .p.codec_tag    = ff_riff_codec_tags_list,
 };
diff --git a/libavformat/wvenc.c b/libavformat/wvenc.c
index 0dca2f7996c..9d9190f2527 100644
--- a/libavformat/wvenc.c
+++ b/libavformat/wvenc.c
@@ -24,6 +24,7 @@
 
 #include "apetag.h"
 #include "avformat.h"
+#include "mux.h"
 #include "wv.h"
 
 typedef struct WvMuxContext {
@@ -76,16 +77,16 @@ static av_cold int wv_write_trailer(AVFormatContext *ctx)
     return 0;
 }
 
-const AVOutputFormat ff_wv_muxer = {
-    .name              = "wv",
-    .long_name         = NULL_IF_CONFIG_SMALL("raw WavPack"),
-    .mime_type         = "audio/x-wavpack",
-    .extensions        = "wv",
+const FFOutputFormat ff_wv_muxer = {
+    .p.name            = "wv",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw WavPack"),
+    .p.mime_type       = "audio/x-wavpack",
+    .p.extensions      = "wv",
     .priv_data_size    = sizeof(WvMuxContext),
-    .audio_codec       = AV_CODEC_ID_WAVPACK,
-    .video_codec       = AV_CODEC_ID_NONE,
+    .p.audio_codec     = AV_CODEC_ID_WAVPACK,
+    .p.video_codec     = AV_CODEC_ID_NONE,
     .init              = wv_init,
     .write_packet      = wv_write_packet,
     .write_trailer     = wv_write_trailer,
-    .flags             = AVFMT_NOTIMESTAMPS,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/yuv4mpegenc.c b/libavformat/yuv4mpegenc.c
index fca0ee31207..fc6b08e0cd4 100644
--- a/libavformat/yuv4mpegenc.c
+++ b/libavformat/yuv4mpegenc.c
@@ -22,6 +22,7 @@
 #include "libavutil/pixdesc.h"
 #include "avformat.h"
 #include "internal.h"
+#include "mux.h"
 #include "yuv4mpeg.h"
 
 static int yuv4_write_header(AVFormatContext *s)
@@ -282,12 +283,12 @@ static int yuv4_init(AVFormatContext *s)
     return 0;
 }
 
-const AVOutputFormat ff_yuv4mpegpipe_muxer = {
-    .name              = "yuv4mpegpipe",
-    .long_name         = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
-    .extensions        = "y4m",
-    .audio_codec       = AV_CODEC_ID_NONE,
-    .video_codec       = AV_CODEC_ID_WRAPPED_AVFRAME,
+const FFOutputFormat ff_yuv4mpegpipe_muxer = {
+    .p.name            = "yuv4mpegpipe",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
+    .p.extensions      = "y4m",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_WRAPPED_AVFRAME,
     .init              = yuv4_init,
     .write_header      = yuv4_write_header,
     .write_packet      = yuv4_write_packet,
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 06/33] avcodec/avcodec: Remove AV_CODEC_FLAG2_DROP_FRAME_TIMECODE

[Anton Khirnov]

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

It has been deprecated in 94d68a41fabb55dd8c7e59b88fe4a28a637d1e5f
and can't be set via AVOptions. The only codecs that use it
(the MPEG-1/2 encoders) have private options for this.
So remove it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 libavcodec/avcodec.h   | 5 -----
 libavcodec/mpeg12enc.c | 1 -
 2 files changed, 6 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index b9bd69a2ec7..d8f22f58007 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -343,11 +343,6 @@ typedef struct RcOverride{
  */
 #define AV_CODEC_FLAG2_LOCAL_HEADER   (1 <<  3)
 
-/**
- * timecode is in drop frame format. DEPRECATED!!!!
- */
-#define AV_CODEC_FLAG2_DROP_FRAME_TIMECODE (1 << 13)
-
 /**
  * Input bitstream might be truncated at a packet boundaries
  * instead of only at frame boundaries.
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index b5951e43070..26cf33a3c68 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -249,7 +249,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
         }
     }
 
-    mpeg12->drop_frame_timecode = mpeg12->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE);
     if (mpeg12->drop_frame_timecode)
         mpeg12->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
     if (mpeg12->drop_frame_timecode && mpeg12->frame_rate_index != 4) {
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 07/33] avcodec: remove FF_API_OPENH264_SLICE_MODE

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/libopenh264enc.c | 16 ----------------
 libavcodec/version_major.h  |  1 -
 2 files changed, 17 deletions(-)

diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
index 6934fd481ce..4dd15b0afe5 100644
--- a/libavcodec/libopenh264enc.c
+++ b/libavcodec/libopenh264enc.c
@@ -63,22 +63,6 @@ typedef struct SVCContext {
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 #define DEPRECATED AV_OPT_FLAG_DEPRECATED
 static const AVOption options[] = {
-#if FF_API_OPENH264_SLICE_MODE
-#if OPENH264_VER_AT_LEAST(1, 6)
-    { "slice_mode", "set slice mode, use slices/max_nal_size", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_FIXEDSLCNUM_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE|DEPRECATED, "slice_mode" },
-#else
-    { "slice_mode", "set slice mode, use slices/max_nal_size", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_AUTO_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE|DEPRECATED, "slice_mode" },
-#endif
-        { "fixed", "a fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" },
-#if OPENH264_VER_AT_LEAST(1, 6)
-        { "dyn", "Size limited (compatibility name)", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
-        { "sizelimited", "Size limited", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
-#else
-        { "rowmb", "one slice per row of macroblocks", 0, AV_OPT_TYPE_CONST, { .i64 = SM_ROWMB_SLICE }, 0, 0, VE, "slice_mode" },
-        { "auto", "automatic number of slices according to number of threads", 0, AV_OPT_TYPE_CONST, { .i64 = SM_AUTO_SLICE }, 0, 0, VE, "slice_mode" },
-        { "dyn", "Dynamic slicing", 0, AV_OPT_TYPE_CONST, { .i64 = SM_DYN_SLICE }, 0, 0, VE, "slice_mode" },
-#endif
-#endif
     { "loopfilter", "enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
     { "profile", "set profile restrictions", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, VE, "profile" },
 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "profile"
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 2c0443c4c8e..e9a4910df0d 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_OPENH264_SLICE_MODE (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_OPENH264_CABAC      (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_UNUSED_CODEC_CAPS   (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_THREAD_SAFE_CALLBACKS (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 08/33] avcodec: remove FF_API_OPENH264_CABAC

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/libopenh264enc.c | 6 ------
 libavcodec/version_major.h  | 1 -
 2 files changed, 7 deletions(-)

diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
index 4dd15b0afe5..8b4755f5ba4 100644
--- a/libavcodec/libopenh264enc.c
+++ b/libavcodec/libopenh264enc.c
@@ -50,9 +50,6 @@ typedef struct SVCContext {
     int max_nal_size;
     int skip_frames;
     int skipped;
-#if FF_API_OPENH264_CABAC
-    int cabac;                      // deprecated
-#endif
     int coder;
 
     // rate control mode
@@ -72,9 +69,6 @@ static const AVOption options[] = {
 #undef PROFILE
     { "max_nal_size", "set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
     { "allow_skip_frames", "allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
-#if FF_API_OPENH264_CABAC
-    { "cabac", "Enable cabac(deprecated, use coder)", OFFSET(cabac), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE|DEPRECATED },
-#endif
     { "coder", "Coder type",  OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" },
         { "default",          NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" },
         { "cavlc",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 },  INT_MIN, INT_MAX, VE, "coder" },
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index e9a4910df0d..cd4830c69ae 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_OPENH264_CABAC      (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_UNUSED_CODEC_CAPS   (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_THREAD_SAFE_CALLBACKS (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_DEBUG_MV          (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 09/33] avcodec: remove FF_API_UNUSED_CODEC_CAPS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/codec.h         | 11 -----------
 libavcodec/version_major.h |  1 -
 2 files changed, 12 deletions(-)

diff --git a/libavcodec/codec.h b/libavcodec/codec.h
index 77a1a3f5a29..e10fcb9c7c2 100644
--- a/libavcodec/codec.h
+++ b/libavcodec/codec.h
@@ -143,17 +143,6 @@
  */
 #define AV_CODEC_CAP_AVOID_PROBING       (1 << 17)
 
-#if FF_API_UNUSED_CODEC_CAPS
-/**
- * Deprecated and unused. Use AVCodecDescriptor.props instead
- */
-#define AV_CODEC_CAP_INTRA_ONLY       0x40000000
-/**
- * Deprecated and unused. Use AVCodecDescriptor.props instead
- */
-#define AV_CODEC_CAP_LOSSLESS         0x80000000
-#endif
-
 /**
  * Codec is backed by a hardware implementation. Typically used to
  * identify a non-hwaccel hardware decoder. For information about hwaccels, use
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index cd4830c69ae..7b561940b0c 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_UNUSED_CODEC_CAPS   (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_THREAD_SAFE_CALLBACKS (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_DEBUG_MV          (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_GET_FRAME_CLASS     (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 10/33] avcodec: remove FF_API_THREAD_SAFE_CALLBACKS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 fftools/ffmpeg.c                  |   5 -
 libavcodec/avcodec.h              |  21 ---
 libavcodec/decode.c               |  13 --
 libavcodec/encode.c               |   7 +-
 libavcodec/frame_thread_encoder.c |  20 ---
 libavcodec/pthread_frame.c        | 237 +-----------------------------
 libavcodec/thread.h               |  12 --
 libavcodec/version_major.h        |   1 -
 8 files changed, 6 insertions(+), 310 deletions(-)

diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 257f319550c..52a3e14f697 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -2640,11 +2640,6 @@ static int init_input_stream(InputStream *ist, char *error, int error_len)
 
         ist->dec_ctx->opaque                = ist;
         ist->dec_ctx->get_format            = get_format;
-#if LIBAVCODEC_VERSION_MAJOR < 60
-        AV_NOWARN_DEPRECATED({
-        ist->dec_ctx->thread_safe_callbacks = 1;
-        })
-#endif
 
         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
            (ist->decoding_needed & DECODING_FOR_OST)) {
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index d8f22f58007..6cf6031705b 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1512,27 +1512,6 @@ typedef struct AVCodecContext {
      */
     int active_thread_type;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-    /**
-     * Set by the client if its custom get_buffer() callback can be called
-     * synchronously from another thread, which allows faster multithreaded decoding.
-     * draw_horiz_band() will be called from other threads regardless of this setting.
-     * Ignored if the default get_buffer() is used.
-     * - encoding: Set by user.
-     * - decoding: Set by user.
-     *
-     * @deprecated the custom get_buffer2() callback should always be
-     *   thread-safe. Thread-unsafe get_buffer2() implementations will be
-     *   invalid starting with LIBAVCODEC_VERSION_MAJOR=60; in other words,
-     *   libavcodec will behave as if this field was always set to 1.
-     *   Callers that want to be forward compatible with future libavcodec
-     *   versions should wrap access to this field in
-     *     `#if LIBAVCODEC_VERSION_MAJOR < 60`
-     */
-    attribute_deprecated
-    int thread_safe_callbacks;
-#endif
-
     /**
      * The codec may call this to execute several independent things.
      * It will return only after finishing all tasks.
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 45c1f085792..8e790102136 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1592,19 +1592,6 @@ int ff_decode_preinit(AVCodecContext *avctx)
      * free the already allocated subtitle_header before overwriting it */
     av_freep(&avctx->subtitle_header);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    if ((avctx->thread_type & FF_THREAD_FRAME) &&
-        avctx->get_buffer2 != avcodec_default_get_buffer2 &&
-        !avctx->thread_safe_callbacks) {
-        av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a "
-               "custom get_buffer2() implementation which is not marked as "
-               "thread safe. This is not supported anymore, make your "
-               "callback thread-safe.\n");
-    }
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
                avctx->codec->max_lowres);
diff --git a/libavcodec/encode.c b/libavcodec/encode.c
index c92beaf8e1f..22407a233df 100644
--- a/libavcodec/encode.c
+++ b/libavcodec/encode.c
@@ -255,10 +255,9 @@ int ff_encode_encode_cb(AVCodecContext *avctx, AVPacket *avpkt,
 unref:
         av_packet_unref(avpkt);
     }
-#if !FF_API_THREAD_SAFE_CALLBACKS
+
     if (frame)
         av_frame_unref(frame);
-#endif
 
     return ret;
 }
@@ -299,10 +298,6 @@ static int encode_simple_internal(AVCodecContext *avctx, AVPacket *avpkt)
         ret = ff_thread_video_encode_frame(avctx, avpkt, frame, &got_packet);
     else {
         ret = ff_encode_encode_cb(avctx, avpkt, frame, &got_packet);
-#if FF_API_THREAD_SAFE_CALLBACKS
-        if (frame)
-            av_frame_unref(frame);
-#endif
     }
 
     if (avci->draining && !got_packet)
diff --git a/libavcodec/frame_thread_encoder.c b/libavcodec/frame_thread_encoder.c
index 35775ae823e..62d9580ad4c 100644
--- a/libavcodec/frame_thread_encoder.c
+++ b/libavcodec/frame_thread_encoder.c
@@ -48,9 +48,6 @@ typedef struct{
 
 typedef struct{
     AVCodecContext *parent_avctx;
-#if FF_API_THREAD_SAFE_CALLBACKS
-    pthread_mutex_t buffer_mutex;
-#endif
 
     pthread_mutex_t task_fifo_mutex; /* Used to guard (next_)task_index */
     pthread_cond_t task_fifo_cond;
@@ -70,15 +67,9 @@ typedef struct{
 } ThreadContext;
 
 #define OFF(member) offsetof(ThreadContext, member)
-#if FF_API_THREAD_SAFE_CALLBACKS
-DEFINE_OFFSET_ARRAY(ThreadContext, thread_ctx, pthread_init_cnt,
-                    (OFF(buffer_mutex), OFF(task_fifo_mutex), OFF(finished_task_mutex)),
-                    (OFF(task_fifo_cond), OFF(finished_task_cond)));
-#else
 DEFINE_OFFSET_ARRAY(ThreadContext, thread_ctx, pthread_init_cnt,
                     (OFF(task_fifo_mutex), OFF(finished_task_mutex)),
                     (OFF(task_fifo_cond),  OFF(finished_task_cond)));
-#endif
 #undef OFF
 
 static void * attribute_align_arg worker(void *v){
@@ -112,11 +103,6 @@ static void * attribute_align_arg worker(void *v){
         pkt   = task->outdata;
 
         ret = ff_encode_encode_cb(avctx, pkt, frame, &task->got_packet);
-#if FF_API_THREAD_SAFE_CALLBACKS
-        pthread_mutex_lock(&c->buffer_mutex);
-        av_frame_unref(frame);
-        pthread_mutex_unlock(&c->buffer_mutex);
-#endif
         pthread_mutex_lock(&c->finished_task_mutex);
         task->return_code = ret;
         task->finished    = 1;
@@ -124,13 +110,7 @@ static void * attribute_align_arg worker(void *v){
         pthread_mutex_unlock(&c->finished_task_mutex);
     }
 end:
-#if FF_API_THREAD_SAFE_CALLBACKS
-    pthread_mutex_lock(&c->buffer_mutex);
-#endif
     avcodec_close(avctx);
-#if FF_API_THREAD_SAFE_CALLBACKS
-    pthread_mutex_unlock(&c->buffer_mutex);
-#endif
     av_freep(&avctx);
     return NULL;
 }
diff --git a/libavcodec/pthread_frame.c b/libavcodec/pthread_frame.c
index 62a0b18a8ac..81c21143783 100644
--- a/libavcodec/pthread_frame.c
+++ b/libavcodec/pthread_frame.c
@@ -99,22 +99,6 @@ typedef struct PerThreadContext {
 
     atomic_int state;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-    /**
-     * Array of frames passed to ff_thread_release_buffer().
-     * Frames are released after all threads referencing them are finished.
-     */
-    AVFrame **released_buffers;
-    int   num_released_buffers;
-    int       released_buffers_allocated;
-
-    AVFrame *requested_frame;       ///< AVFrame the codec passed to get_buffer()
-    int      requested_flags;       ///< flags passed to get_buffer() for requested_frame
-
-    const enum AVPixelFormat *available_formats; ///< Format array for get_format()
-    enum AVPixelFormat result_format;            ///< get_format() result
-#endif
-
     int die;                        ///< Set when the thread should exit.
 
     int hwaccel_serializing;
@@ -156,11 +140,6 @@ typedef struct FrameThreadContext {
     void            *stash_hwaccel_priv;
 } FrameThreadContext;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-#define THREAD_SAFE_CALLBACKS(avctx) \
-((avctx)->thread_safe_callbacks || (avctx)->get_buffer2 == avcodec_default_get_buffer2)
-#endif
-
 static void async_lock(FrameThreadContext *fctx)
 {
     pthread_mutex_lock(&fctx->async_mutex);
@@ -212,14 +191,8 @@ static attribute_align_arg void *frame_worker_thread(void *arg)
 
         if (p->die) break;
 
-FF_DISABLE_DEPRECATION_WARNINGS
-        if (!codec->update_thread_context
-#if FF_API_THREAD_SAFE_CALLBACKS
-            && THREAD_SAFE_CALLBACKS(avctx)
-#endif
-            )
+        if (!codec->update_thread_context)
             ff_thread_finish_setup(avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
 
         /* If a decoder supports hwaccel, then it must call ff_get_format().
          * Since that call must happen before ff_thread_finish_setup(), the
@@ -391,11 +364,6 @@ static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
 
     dst->frame_number     = src->frame_number;
     dst->reordered_opaque = src->reordered_opaque;
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    dst->thread_safe_callbacks = src->thread_safe_callbacks;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
 
     if (src->slice_count && src->slice_offset) {
         if (dst->slice_count < src->slice_count) {
@@ -417,29 +385,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
     return 0;
 }
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-/// Releases the buffers that this decoding thread was the last user of.
-static void release_delayed_buffers(PerThreadContext *p)
-{
-    FrameThreadContext *fctx = p->parent;
-
-    while (p->num_released_buffers > 0) {
-        AVFrame *f;
-
-        pthread_mutex_lock(&fctx->buffer_mutex);
-
-        // fix extended data in case the caller screwed it up
-        av_assert0(p->avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
-                   p->avctx->codec_type == AVMEDIA_TYPE_AUDIO);
-        f = p->released_buffers[--p->num_released_buffers];
-        f->extended_data = f->data;
-        av_frame_unref(f);
-
-        pthread_mutex_unlock(&fctx->buffer_mutex);
-    }
-}
-#endif
-
 static int submit_packet(PerThreadContext *p, AVCodecContext *user_avctx,
                          AVPacket *avpkt)
 {
@@ -462,10 +407,6 @@ static int submit_packet(PerThreadContext *p, AVCodecContext *user_avctx,
                           (p->avctx->debug & FF_DEBUG_THREADS) != 0,
                           memory_order_relaxed);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-    release_delayed_buffers(p);
-#endif
-
     if (prev_thread) {
         int err;
         if (atomic_load(&prev_thread->state) == STATE_SETTING_UP) {
@@ -500,44 +441,6 @@ static int submit_packet(PerThreadContext *p, AVCodecContext *user_avctx,
     pthread_cond_signal(&p->input_cond);
     pthread_mutex_unlock(&p->mutex);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    /*
-     * If the client doesn't have a thread-safe get_buffer(),
-     * then decoding threads call back to the main thread,
-     * and it calls back to the client here.
-     */
-
-    if (!p->avctx->thread_safe_callbacks && (
-         p->avctx->get_format != avcodec_default_get_format ||
-         p->avctx->get_buffer2 != avcodec_default_get_buffer2)) {
-        while (atomic_load(&p->state) != STATE_SETUP_FINISHED && atomic_load(&p->state) != STATE_INPUT_READY) {
-            int call_done = 1;
-            pthread_mutex_lock(&p->progress_mutex);
-            while (atomic_load(&p->state) == STATE_SETTING_UP)
-                pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
-
-            switch (atomic_load_explicit(&p->state, memory_order_acquire)) {
-            case STATE_GET_BUFFER:
-                p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags);
-                break;
-            case STATE_GET_FORMAT:
-                p->result_format = ff_get_format(p->avctx, p->available_formats);
-                break;
-            default:
-                call_done = 0;
-                break;
-            }
-            if (call_done) {
-                atomic_store(&p->state, STATE_SETTING_UP);
-                pthread_cond_signal(&p->progress_cond);
-            }
-            pthread_mutex_unlock(&p->progress_mutex);
-        }
-    }
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     fctx->prev_thread = p;
     fctx->next_decoding++;
 
@@ -768,12 +671,6 @@ void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
             if (codec->close && p->thread_init != UNINITIALIZED)
                 codec->close(ctx);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-            release_delayed_buffers(p);
-            for (int j = 0; j < p->released_buffers_allocated; j++)
-                av_frame_free(&p->released_buffers[j]);
-            av_freep(&p->released_buffers);
-#endif
             if (ctx->priv_data) {
                 if (codec->p.priv_class)
                     av_opt_free(ctx->priv_data);
@@ -971,10 +868,6 @@ void ff_thread_flush(AVCodecContext *avctx)
         av_frame_unref(p->frame);
         p->result = 0;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-        release_delayed_buffers(p);
-#endif
-
         if (ffcodec(avctx->codec)->flush)
             ffcodec(avctx->codec)->flush(p->avctx);
     }
@@ -983,16 +876,12 @@ void ff_thread_flush(AVCodecContext *avctx)
 int ff_thread_can_start_frame(AVCodecContext *avctx)
 {
     PerThreadContext *p = avctx->internal->thread_ctx;
-FF_DISABLE_DEPRECATION_WARNINGS
+
     if ((avctx->active_thread_type&FF_THREAD_FRAME) && atomic_load(&p->state) != STATE_SETTING_UP &&
-        (ffcodec(avctx->codec)->update_thread_context
-#if FF_API_THREAD_SAFE_CALLBACKS
-         || !THREAD_SAFE_CALLBACKS(avctx)
-#endif
-         )) {
+        ffcodec(avctx->codec)->update_thread_context) {
         return 0;
     }
-FF_ENABLE_DEPRECATION_WARNINGS
+
     return 1;
 }
 
@@ -1007,80 +896,20 @@ static int thread_get_buffer_internal(AVCodecContext *avctx, AVFrame *f, int fla
     p = avctx->internal->thread_ctx;
 FF_DISABLE_DEPRECATION_WARNINGS
     if (atomic_load(&p->state) != STATE_SETTING_UP &&
-        (ffcodec(avctx->codec)->update_thread_context
-#if FF_API_THREAD_SAFE_CALLBACKS
-         || !THREAD_SAFE_CALLBACKS(avctx)
-#endif
-         )) {
+        ffcodec(avctx->codec)->update_thread_context) {
 FF_ENABLE_DEPRECATION_WARNINGS
         av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
         return -1;
     }
 
     pthread_mutex_lock(&p->parent->buffer_mutex);
-#if !FF_API_THREAD_SAFE_CALLBACKS
     err = ff_get_buffer(avctx, f, flags);
-#else
-FF_DISABLE_DEPRECATION_WARNINGS
-    if (THREAD_SAFE_CALLBACKS(avctx)) {
-        err = ff_get_buffer(avctx, f, flags);
-    } else {
-        pthread_mutex_lock(&p->progress_mutex);
-        p->requested_frame = f;
-        p->requested_flags = flags;
-        atomic_store_explicit(&p->state, STATE_GET_BUFFER, memory_order_release);
-        pthread_cond_broadcast(&p->progress_cond);
-
-        while (atomic_load(&p->state) != STATE_SETTING_UP)
-            pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
-
-        err = p->result;
-
-        pthread_mutex_unlock(&p->progress_mutex);
-
-    }
-    if (!THREAD_SAFE_CALLBACKS(avctx) && !ffcodec(avctx->codec)->update_thread_context)
-        ff_thread_finish_setup(avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
 
     pthread_mutex_unlock(&p->parent->buffer_mutex);
 
     return err;
 }
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
-{
-    enum AVPixelFormat res;
-    PerThreadContext *p;
-    if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
-        avctx->get_format == avcodec_default_get_format)
-        return ff_get_format(avctx, fmt);
-
-    p = avctx->internal->thread_ctx;
-    if (atomic_load(&p->state) != STATE_SETTING_UP) {
-        av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
-        return -1;
-    }
-    pthread_mutex_lock(&p->progress_mutex);
-    p->available_formats = fmt;
-    atomic_store(&p->state, STATE_GET_FORMAT);
-    pthread_cond_broadcast(&p->progress_cond);
-
-    while (atomic_load(&p->state) != STATE_SETTING_UP)
-        pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
-
-    res = p->result_format;
-
-    pthread_mutex_unlock(&p->progress_mutex);
-
-    return res;
-}
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
 {
     int ret = thread_get_buffer_internal(avctx, f, flags);
@@ -1122,69 +951,13 @@ int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
 
 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
 {
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    PerThreadContext *p;
-    FrameThreadContext *fctx;
-    AVFrame *dst;
-    int ret = 0;
-    int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) ||
-                          THREAD_SAFE_CALLBACKS(avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     if (!f)
         return;
 
     if (avctx->debug & FF_DEBUG_BUFFERS)
         av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f);
 
-#if !FF_API_THREAD_SAFE_CALLBACKS
     av_frame_unref(f);
-#else
-    // when the frame buffers are not allocated, just reset it to clean state
-    if (can_direct_free || !f->buf[0]) {
-        av_frame_unref(f);
-        return;
-    }
-
-    p    = avctx->internal->thread_ctx;
-    fctx = p->parent;
-    pthread_mutex_lock(&fctx->buffer_mutex);
-
-    if (p->num_released_buffers == p->released_buffers_allocated) {
-        AVFrame **tmp = av_realloc_array(p->released_buffers, p->released_buffers_allocated + 1,
-                                         sizeof(*p->released_buffers));
-        if (tmp) {
-            tmp[p->released_buffers_allocated] = av_frame_alloc();
-            p->released_buffers = tmp;
-        }
-
-        if (!tmp || !tmp[p->released_buffers_allocated]) {
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-        p->released_buffers_allocated++;
-    }
-
-    dst = p->released_buffers[p->num_released_buffers];
-    av_frame_move_ref(dst, f);
-
-    p->num_released_buffers++;
-
-fail:
-    pthread_mutex_unlock(&fctx->buffer_mutex);
-
-    // make sure the frame is clean even if we fail to free it
-    // this leaks, but it is better than crashing
-    if (ret < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Could not queue a frame for freeing, this will leak\n");
-        memset(f->buf, 0, sizeof(f->buf));
-        if (f->extended_buf)
-            memset(f->extended_buf, 0, f->nb_extended_buf * sizeof(*f->extended_buf));
-        av_frame_unref(f);
-    }
-#endif
 }
 
 void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
diff --git a/libavcodec/thread.h b/libavcodec/thread.h
index d5673f25eaf..88a14cfeb12 100644
--- a/libavcodec/thread.h
+++ b/libavcodec/thread.h
@@ -62,19 +62,7 @@ int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture,
  */
 void ff_thread_finish_setup(AVCodecContext *avctx);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-/**
- * Wrapper around get_format() for frame-multithreaded codecs.
- * Call this function instead of avctx->get_format().
- * Cannot be called after the codec has called ff_thread_finish_setup().
- *
- * @param avctx The current context.
- * @param fmt The list of available formats.
- */
-enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt);
-#else
 #define ff_thread_get_format ff_get_format
-#endif
 
 /**
  * Wrapper around get_buffer() for frame-multithreaded codecs.
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 7b561940b0c..dbb5606c147 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_THREAD_SAFE_CALLBACKS (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_DEBUG_MV          (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_GET_FRAME_CLASS     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AUTO_THREADS        (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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Re: [FFmpeg-devel] [PATCH v2 10/33] avcodec: remove FF_API_THREAD_SAFE_CALLBACKS

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 1646 bytes --]

On Sat, Feb 04, 2023 at 11:41:41AM +0100, Anton Khirnov wrote:
> From: James Almer <jamrial@gmail.com>
> 
> Signed-off-by: James Almer <jamrial@gmail.com>
> ---
>  fftools/ffmpeg.c                  |   5 -
>  libavcodec/avcodec.h              |  21 ---
>  libavcodec/decode.c               |  13 --
>  libavcodec/encode.c               |   7 +-
>  libavcodec/frame_thread_encoder.c |  20 ---
>  libavcodec/pthread_frame.c        | 237 +-----------------------------
>  libavcodec/thread.h               |  12 --
>  libavcodec/version_major.h        |   1 -
>  8 files changed, 6 insertions(+), 310 deletions(-)

This seems to break build without pthreads

libavcodec/libavcodec.a(utils.o): In function `ff_get_format':
libavcodec/utils.c:917: multiple definition of `ff_get_format'
libavcodec/libavcodec.a(decode.o):libavcodec/decode.c:1147: first defined here
collect2: error: ld returned 1 exit status
Makefile:131: recipe for target 'ffplay_g' failed
make: *** [ffplay_g] Error 1
make: *** Waiting for unfinished jobs....
libavcodec/libavcodec.a(utils.o): In function `ff_get_format':
libavcodec/utils.c:917: multiple definition of `ff_get_format'
libavcodec/libavcodec.a(decode.o):libavcodec/decode.c:1147: first defined here
collect2: error: ld returned 1 exit status
Makefile:131: recipe for target 'ffprobe_g' failed
make: *** [ffprobe_g] Error 1

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Into a blind darkness they enter who follow after the Ignorance,
they as if into a greater darkness enter who devote themselves
to the Knowledge alone. -- Isha Upanishad

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]

[-- Attachment #2: Type: text/plain, Size: 251 bytes --]

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[FFmpeg-devel] [PATCH v2.5 10/33] avcodec: remove FF_API_THREAD_SAFE_CALLBACKS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
Sorry, picked the wrong patch version.
This one does build without pthreads.
---
 fftools/ffmpeg.c                  |   5 -
 libavcodec/avcodec.h              |  21 ---
 libavcodec/decode.c               |  13 --
 libavcodec/encode.c               |   7 +-
 libavcodec/frame_thread_encoder.c |  20 ---
 libavcodec/pthread_frame.c        | 237 +-----------------------------
 libavcodec/thread.h               |  12 --
 libavcodec/utils.c                |   5 -
 libavcodec/version_major.h        |   1 -
 9 files changed, 6 insertions(+), 315 deletions(-)

diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 03e29e8834..80ca76ae04 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -2795,11 +2795,6 @@ static int init_input_stream(InputStream *ist, char *error, int error_len)
 
         ist->dec_ctx->opaque                = ist;
         ist->dec_ctx->get_format            = get_format;
-#if LIBAVCODEC_VERSION_MAJOR < 60
-        AV_NOWARN_DEPRECATED({
-        ist->dec_ctx->thread_safe_callbacks = 1;
-        })
-#endif
 
         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
            (ist->decoding_needed & DECODING_FOR_OST)) {
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 3884e52de9..22d7f50649 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1526,27 +1526,6 @@ typedef struct AVCodecContext {
      */
     int active_thread_type;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-    /**
-     * Set by the client if its custom get_buffer() callback can be called
-     * synchronously from another thread, which allows faster multithreaded decoding.
-     * draw_horiz_band() will be called from other threads regardless of this setting.
-     * Ignored if the default get_buffer() is used.
-     * - encoding: Set by user.
-     * - decoding: Set by user.
-     *
-     * @deprecated the custom get_buffer2() callback should always be
-     *   thread-safe. Thread-unsafe get_buffer2() implementations will be
-     *   invalid starting with LIBAVCODEC_VERSION_MAJOR=60; in other words,
-     *   libavcodec will behave as if this field was always set to 1.
-     *   Callers that want to be forward compatible with future libavcodec
-     *   versions should wrap access to this field in
-     *     `#if LIBAVCODEC_VERSION_MAJOR < 60`
-     */
-    attribute_deprecated
-    int thread_safe_callbacks;
-#endif
-
     /**
      * The codec may call this to execute several independent things.
      * It will return only after finishing all tasks.
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 78bf3ba547..34e67a649b 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1604,19 +1604,6 @@ int ff_decode_preinit(AVCodecContext *avctx)
      * free the already allocated subtitle_header before overwriting it */
     av_freep(&avctx->subtitle_header);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    if ((avctx->thread_type & FF_THREAD_FRAME) &&
-        avctx->get_buffer2 != avcodec_default_get_buffer2 &&
-        !avctx->thread_safe_callbacks) {
-        av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a "
-               "custom get_buffer2() implementation which is not marked as "
-               "thread safe. This is not supported anymore, make your "
-               "callback thread-safe.\n");
-    }
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
                avctx->codec->max_lowres);
diff --git a/libavcodec/encode.c b/libavcodec/encode.c
index b0a9625ca9..6499d962ca 100644
--- a/libavcodec/encode.c
+++ b/libavcodec/encode.c
@@ -259,10 +259,9 @@ int ff_encode_encode_cb(AVCodecContext *avctx, AVPacket *avpkt,
 unref:
         av_packet_unref(avpkt);
     }
-#if !FF_API_THREAD_SAFE_CALLBACKS
+
     if (frame)
         av_frame_unref(frame);
-#endif
 
     return ret;
 }
@@ -303,10 +302,6 @@ static int encode_simple_internal(AVCodecContext *avctx, AVPacket *avpkt)
         ret = ff_thread_video_encode_frame(avctx, avpkt, frame, &got_packet);
     else {
         ret = ff_encode_encode_cb(avctx, avpkt, frame, &got_packet);
-#if FF_API_THREAD_SAFE_CALLBACKS
-        if (frame)
-            av_frame_unref(frame);
-#endif
     }
 
     if (avci->draining && !got_packet)
diff --git a/libavcodec/frame_thread_encoder.c b/libavcodec/frame_thread_encoder.c
index 35775ae823..62d9580ad4 100644
--- a/libavcodec/frame_thread_encoder.c
+++ b/libavcodec/frame_thread_encoder.c
@@ -48,9 +48,6 @@ typedef struct{
 
 typedef struct{
     AVCodecContext *parent_avctx;
-#if FF_API_THREAD_SAFE_CALLBACKS
-    pthread_mutex_t buffer_mutex;
-#endif
 
     pthread_mutex_t task_fifo_mutex; /* Used to guard (next_)task_index */
     pthread_cond_t task_fifo_cond;
@@ -70,15 +67,9 @@ typedef struct{
 } ThreadContext;
 
 #define OFF(member) offsetof(ThreadContext, member)
-#if FF_API_THREAD_SAFE_CALLBACKS
-DEFINE_OFFSET_ARRAY(ThreadContext, thread_ctx, pthread_init_cnt,
-                    (OFF(buffer_mutex), OFF(task_fifo_mutex), OFF(finished_task_mutex)),
-                    (OFF(task_fifo_cond), OFF(finished_task_cond)));
-#else
 DEFINE_OFFSET_ARRAY(ThreadContext, thread_ctx, pthread_init_cnt,
                     (OFF(task_fifo_mutex), OFF(finished_task_mutex)),
                     (OFF(task_fifo_cond),  OFF(finished_task_cond)));
-#endif
 #undef OFF
 
 static void * attribute_align_arg worker(void *v){
@@ -112,11 +103,6 @@ static void * attribute_align_arg worker(void *v){
         pkt   = task->outdata;
 
         ret = ff_encode_encode_cb(avctx, pkt, frame, &task->got_packet);
-#if FF_API_THREAD_SAFE_CALLBACKS
-        pthread_mutex_lock(&c->buffer_mutex);
-        av_frame_unref(frame);
-        pthread_mutex_unlock(&c->buffer_mutex);
-#endif
         pthread_mutex_lock(&c->finished_task_mutex);
         task->return_code = ret;
         task->finished    = 1;
@@ -124,13 +110,7 @@ static void * attribute_align_arg worker(void *v){
         pthread_mutex_unlock(&c->finished_task_mutex);
     }
 end:
-#if FF_API_THREAD_SAFE_CALLBACKS
-    pthread_mutex_lock(&c->buffer_mutex);
-#endif
     avcodec_close(avctx);
-#if FF_API_THREAD_SAFE_CALLBACKS
-    pthread_mutex_unlock(&c->buffer_mutex);
-#endif
     av_freep(&avctx);
     return NULL;
 }
diff --git a/libavcodec/pthread_frame.c b/libavcodec/pthread_frame.c
index ae8d051acd..71edd6b3ec 100644
--- a/libavcodec/pthread_frame.c
+++ b/libavcodec/pthread_frame.c
@@ -99,22 +99,6 @@ typedef struct PerThreadContext {
 
     atomic_int state;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-    /**
-     * Array of frames passed to ff_thread_release_buffer().
-     * Frames are released after all threads referencing them are finished.
-     */
-    AVFrame **released_buffers;
-    int   num_released_buffers;
-    int       released_buffers_allocated;
-
-    AVFrame *requested_frame;       ///< AVFrame the codec passed to get_buffer()
-    int      requested_flags;       ///< flags passed to get_buffer() for requested_frame
-
-    const enum AVPixelFormat *available_formats; ///< Format array for get_format()
-    enum AVPixelFormat result_format;            ///< get_format() result
-#endif
-
     int die;                        ///< Set when the thread should exit.
 
     int hwaccel_serializing;
@@ -156,11 +140,6 @@ typedef struct FrameThreadContext {
     void            *stash_hwaccel_priv;
 } FrameThreadContext;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-#define THREAD_SAFE_CALLBACKS(avctx) \
-((avctx)->thread_safe_callbacks || (avctx)->get_buffer2 == avcodec_default_get_buffer2)
-#endif
-
 static void async_lock(FrameThreadContext *fctx)
 {
     pthread_mutex_lock(&fctx->async_mutex);
@@ -212,14 +191,8 @@ static attribute_align_arg void *frame_worker_thread(void *arg)
 
         if (p->die) break;
 
-FF_DISABLE_DEPRECATION_WARNINGS
-        if (!codec->update_thread_context
-#if FF_API_THREAD_SAFE_CALLBACKS
-            && THREAD_SAFE_CALLBACKS(avctx)
-#endif
-            )
+        if (!codec->update_thread_context)
             ff_thread_finish_setup(avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
 
         /* If a decoder supports hwaccel, then it must call ff_get_format().
          * Since that call must happen before ff_thread_finish_setup(), the
@@ -394,11 +367,6 @@ static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
 FF_DISABLE_DEPRECATION_WARNINGS
     dst->reordered_opaque = src->reordered_opaque;
 FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    dst->thread_safe_callbacks = src->thread_safe_callbacks;
-FF_ENABLE_DEPRECATION_WARNINGS
 #endif
 
     if (src->slice_count && src->slice_offset) {
@@ -421,29 +389,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
     return 0;
 }
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-/// Releases the buffers that this decoding thread was the last user of.
-static void release_delayed_buffers(PerThreadContext *p)
-{
-    FrameThreadContext *fctx = p->parent;
-
-    while (p->num_released_buffers > 0) {
-        AVFrame *f;
-
-        pthread_mutex_lock(&fctx->buffer_mutex);
-
-        // fix extended data in case the caller screwed it up
-        av_assert0(p->avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
-                   p->avctx->codec_type == AVMEDIA_TYPE_AUDIO);
-        f = p->released_buffers[--p->num_released_buffers];
-        f->extended_data = f->data;
-        av_frame_unref(f);
-
-        pthread_mutex_unlock(&fctx->buffer_mutex);
-    }
-}
-#endif
-
 static int submit_packet(PerThreadContext *p, AVCodecContext *user_avctx,
                          AVPacket *avpkt)
 {
@@ -466,10 +411,6 @@ static int submit_packet(PerThreadContext *p, AVCodecContext *user_avctx,
                           (p->avctx->debug & FF_DEBUG_THREADS) != 0,
                           memory_order_relaxed);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-    release_delayed_buffers(p);
-#endif
-
     if (prev_thread) {
         int err;
         if (atomic_load(&prev_thread->state) == STATE_SETTING_UP) {
@@ -504,44 +445,6 @@ static int submit_packet(PerThreadContext *p, AVCodecContext *user_avctx,
     pthread_cond_signal(&p->input_cond);
     pthread_mutex_unlock(&p->mutex);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    /*
-     * If the client doesn't have a thread-safe get_buffer(),
-     * then decoding threads call back to the main thread,
-     * and it calls back to the client here.
-     */
-
-    if (!p->avctx->thread_safe_callbacks && (
-         p->avctx->get_format != avcodec_default_get_format ||
-         p->avctx->get_buffer2 != avcodec_default_get_buffer2)) {
-        while (atomic_load(&p->state) != STATE_SETUP_FINISHED && atomic_load(&p->state) != STATE_INPUT_READY) {
-            int call_done = 1;
-            pthread_mutex_lock(&p->progress_mutex);
-            while (atomic_load(&p->state) == STATE_SETTING_UP)
-                pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
-
-            switch (atomic_load_explicit(&p->state, memory_order_acquire)) {
-            case STATE_GET_BUFFER:
-                p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags);
-                break;
-            case STATE_GET_FORMAT:
-                p->result_format = ff_get_format(p->avctx, p->available_formats);
-                break;
-            default:
-                call_done = 0;
-                break;
-            }
-            if (call_done) {
-                atomic_store(&p->state, STATE_SETTING_UP);
-                pthread_cond_signal(&p->progress_cond);
-            }
-            pthread_mutex_unlock(&p->progress_mutex);
-        }
-    }
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     fctx->prev_thread = p;
     fctx->next_decoding++;
 
@@ -772,12 +675,6 @@ void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
             if (codec->close && p->thread_init != UNINITIALIZED)
                 codec->close(ctx);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-            release_delayed_buffers(p);
-            for (int j = 0; j < p->released_buffers_allocated; j++)
-                av_frame_free(&p->released_buffers[j]);
-            av_freep(&p->released_buffers);
-#endif
             if (ctx->priv_data) {
                 if (codec->p.priv_class)
                     av_opt_free(ctx->priv_data);
@@ -975,10 +872,6 @@ void ff_thread_flush(AVCodecContext *avctx)
         av_frame_unref(p->frame);
         p->result = 0;
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-        release_delayed_buffers(p);
-#endif
-
         if (ffcodec(avctx->codec)->flush)
             ffcodec(avctx->codec)->flush(p->avctx);
     }
@@ -987,16 +880,12 @@ void ff_thread_flush(AVCodecContext *avctx)
 int ff_thread_can_start_frame(AVCodecContext *avctx)
 {
     PerThreadContext *p = avctx->internal->thread_ctx;
-FF_DISABLE_DEPRECATION_WARNINGS
+
     if ((avctx->active_thread_type&FF_THREAD_FRAME) && atomic_load(&p->state) != STATE_SETTING_UP &&
-        (ffcodec(avctx->codec)->update_thread_context
-#if FF_API_THREAD_SAFE_CALLBACKS
-         || !THREAD_SAFE_CALLBACKS(avctx)
-#endif
-         )) {
+        ffcodec(avctx->codec)->update_thread_context) {
         return 0;
     }
-FF_ENABLE_DEPRECATION_WARNINGS
+
     return 1;
 }
 
@@ -1011,80 +900,20 @@ static int thread_get_buffer_internal(AVCodecContext *avctx, AVFrame *f, int fla
     p = avctx->internal->thread_ctx;
 FF_DISABLE_DEPRECATION_WARNINGS
     if (atomic_load(&p->state) != STATE_SETTING_UP &&
-        (ffcodec(avctx->codec)->update_thread_context
-#if FF_API_THREAD_SAFE_CALLBACKS
-         || !THREAD_SAFE_CALLBACKS(avctx)
-#endif
-         )) {
+        ffcodec(avctx->codec)->update_thread_context) {
 FF_ENABLE_DEPRECATION_WARNINGS
         av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
         return -1;
     }
 
     pthread_mutex_lock(&p->parent->buffer_mutex);
-#if !FF_API_THREAD_SAFE_CALLBACKS
     err = ff_get_buffer(avctx, f, flags);
-#else
-FF_DISABLE_DEPRECATION_WARNINGS
-    if (THREAD_SAFE_CALLBACKS(avctx)) {
-        err = ff_get_buffer(avctx, f, flags);
-    } else {
-        pthread_mutex_lock(&p->progress_mutex);
-        p->requested_frame = f;
-        p->requested_flags = flags;
-        atomic_store_explicit(&p->state, STATE_GET_BUFFER, memory_order_release);
-        pthread_cond_broadcast(&p->progress_cond);
-
-        while (atomic_load(&p->state) != STATE_SETTING_UP)
-            pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
-
-        err = p->result;
-
-        pthread_mutex_unlock(&p->progress_mutex);
-
-    }
-    if (!THREAD_SAFE_CALLBACKS(avctx) && !ffcodec(avctx->codec)->update_thread_context)
-        ff_thread_finish_setup(avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
 
     pthread_mutex_unlock(&p->parent->buffer_mutex);
 
     return err;
 }
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
-{
-    enum AVPixelFormat res;
-    PerThreadContext *p;
-    if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
-        avctx->get_format == avcodec_default_get_format)
-        return ff_get_format(avctx, fmt);
-
-    p = avctx->internal->thread_ctx;
-    if (atomic_load(&p->state) != STATE_SETTING_UP) {
-        av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
-        return -1;
-    }
-    pthread_mutex_lock(&p->progress_mutex);
-    p->available_formats = fmt;
-    atomic_store(&p->state, STATE_GET_FORMAT);
-    pthread_cond_broadcast(&p->progress_cond);
-
-    while (atomic_load(&p->state) != STATE_SETTING_UP)
-        pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
-
-    res = p->result_format;
-
-    pthread_mutex_unlock(&p->progress_mutex);
-
-    return res;
-}
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
 {
     int ret = thread_get_buffer_internal(avctx, f, flags);
@@ -1126,69 +955,13 @@ int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
 
 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
 {
-#if FF_API_THREAD_SAFE_CALLBACKS
-FF_DISABLE_DEPRECATION_WARNINGS
-    PerThreadContext *p;
-    FrameThreadContext *fctx;
-    AVFrame *dst;
-    int ret = 0;
-    int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) ||
-                          THREAD_SAFE_CALLBACKS(avctx);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     if (!f)
         return;
 
     if (avctx->debug & FF_DEBUG_BUFFERS)
         av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f);
 
-#if !FF_API_THREAD_SAFE_CALLBACKS
     av_frame_unref(f);
-#else
-    // when the frame buffers are not allocated, just reset it to clean state
-    if (can_direct_free || !f->buf[0]) {
-        av_frame_unref(f);
-        return;
-    }
-
-    p    = avctx->internal->thread_ctx;
-    fctx = p->parent;
-    pthread_mutex_lock(&fctx->buffer_mutex);
-
-    if (p->num_released_buffers == p->released_buffers_allocated) {
-        AVFrame **tmp = av_realloc_array(p->released_buffers, p->released_buffers_allocated + 1,
-                                         sizeof(*p->released_buffers));
-        if (tmp) {
-            tmp[p->released_buffers_allocated] = av_frame_alloc();
-            p->released_buffers = tmp;
-        }
-
-        if (!tmp || !tmp[p->released_buffers_allocated]) {
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-        p->released_buffers_allocated++;
-    }
-
-    dst = p->released_buffers[p->num_released_buffers];
-    av_frame_move_ref(dst, f);
-
-    p->num_released_buffers++;
-
-fail:
-    pthread_mutex_unlock(&fctx->buffer_mutex);
-
-    // make sure the frame is clean even if we fail to free it
-    // this leaks, but it is better than crashing
-    if (ret < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Could not queue a frame for freeing, this will leak\n");
-        memset(f->buf, 0, sizeof(f->buf));
-        if (f->extended_buf)
-            memset(f->extended_buf, 0, f->nb_extended_buf * sizeof(*f->extended_buf));
-        av_frame_unref(f);
-    }
-#endif
 }
 
 void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
diff --git a/libavcodec/thread.h b/libavcodec/thread.h
index d5673f25ea..88a14cfeb1 100644
--- a/libavcodec/thread.h
+++ b/libavcodec/thread.h
@@ -62,19 +62,7 @@ int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture,
  */
 void ff_thread_finish_setup(AVCodecContext *avctx);
 
-#if FF_API_THREAD_SAFE_CALLBACKS
-/**
- * Wrapper around get_format() for frame-multithreaded codecs.
- * Call this function instead of avctx->get_format().
- * Cannot be called after the codec has called ff_thread_finish_setup().
- *
- * @param avctx The current context.
- * @param fmt The list of available formats.
- */
-enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt);
-#else
 #define ff_thread_get_format ff_get_format
-#endif
 
 /**
  * Wrapper around get_buffer() for frame-multithreaded codecs.
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 18a433b1af..3b58c8a2ed 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -913,11 +913,6 @@ int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
 
 #if !HAVE_THREADS
 
-enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
-{
-    return ff_get_format(avctx, fmt);
-}
-
 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
 {
     return ff_get_buffer(avctx, f, flags);
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 269b1f4eaa..852f4a9cab 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_THREAD_SAFE_CALLBACKS (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_DEBUG_MV          (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_GET_FRAME_CLASS     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AUTO_THREADS        (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 11/33] avcodec: remove FF_API_DEBUG_MV

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/avcodec.h       | 11 -----------
 libavcodec/version_major.h |  1 -
 2 files changed, 12 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 6cf6031705b..25c4b4eacc3 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1812,17 +1812,6 @@ typedef struct AVCodecContext {
      */
     int seek_preroll;
 
-#if FF_API_DEBUG_MV
-    /**
-     * @deprecated unused
-     */
-    attribute_deprecated
-    int debug_mv;
-#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
-#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
-#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
-#endif
-
     /**
      * custom intra quantization matrix
      * - encoding: Set by user, can be NULL.
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index dbb5606c147..d5d55c6dad0 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_DEBUG_MV          (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_GET_FRAME_CLASS     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AUTO_THREADS        (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 12/33] avcodec: remove FF_API_GET_FRAME_CLASS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/avcodec.h       |  8 --------
 libavcodec/options.c       | 33 ---------------------------------
 libavcodec/version_major.h |  1 -
 3 files changed, 42 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 25c4b4eacc3..8aa08500a46 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2370,14 +2370,6 @@ void avcodec_free_context(AVCodecContext **avctx);
  */
 const AVClass *avcodec_get_class(void);
 
-#if FF_API_GET_FRAME_CLASS
-/**
- * @deprecated This function should not be used.
- */
-attribute_deprecated
-const AVClass *avcodec_get_frame_class(void);
-#endif
-
 /**
  * Get the AVClass for AVSubtitleRect. It can be used in combination with
  * AV_OPT_SEARCH_FAKE_OBJ for examining options.
diff --git a/libavcodec/options.c b/libavcodec/options.c
index 2e05d29e1ee..fdfbc0ababd 100644
--- a/libavcodec/options.c
+++ b/libavcodec/options.c
@@ -185,39 +185,6 @@ const AVClass *avcodec_get_class(void)
     return &av_codec_context_class;
 }
 
-#if FF_API_GET_FRAME_CLASS
-FF_DISABLE_DEPRECATION_WARNINGS
-#define FOFFSET(x) offsetof(AVFrame,x)
-
-static const AVOption frame_options[]={
-{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
-{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
-{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
-{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
-{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
-{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
-{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
-#if FF_API_OLD_CHANNEL_LAYOUT
-{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
-#endif
-{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
-{NULL},
-};
-
-static const AVClass av_frame_class = {
-    .class_name              = "AVFrame",
-    .item_name               = NULL,
-    .option                  = frame_options,
-    .version                 = LIBAVUTIL_VERSION_INT,
-};
-
-const AVClass *avcodec_get_frame_class(void)
-{
-    return &av_frame_class;
-}
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
 #define SROFFSET(x) offsetof(AVSubtitleRect,x)
 
 static const AVOption subtitle_rect_options[]={
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index d5d55c6dad0..1a6a60942fc 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_GET_FRAME_CLASS     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AUTO_THREADS        (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AVCTX_TIMEBASE    (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 13/33] avcodec: remove FF_API_AUTO_THREADS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/codec.h         | 3 ---
 libavcodec/version_major.h | 1 -
 2 files changed, 4 deletions(-)

diff --git a/libavcodec/codec.h b/libavcodec/codec.h
index e10fcb9c7c2..8bf85b2f9c8 100644
--- a/libavcodec/codec.h
+++ b/libavcodec/codec.h
@@ -125,9 +125,6 @@
  * multithreading-capable external libraries.
  */
 #define AV_CODEC_CAP_OTHER_THREADS       (1 << 15)
-#if FF_API_AUTO_THREADS
-#define AV_CODEC_CAP_AUTO_THREADS        AV_CODEC_CAP_OTHER_THREADS
-#endif
 /**
  * Audio encoder supports receiving a different number of samples in each call.
  */
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 1a6a60942fc..1b96c4c8fe9 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,7 +37,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_AUTO_THREADS        (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AVCTX_TIMEBASE    (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_FLAG_TRUNCATED      (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 14/33] avcodec: remove FF_API_AVCTX_TIMEBASE

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/av1_parser.c        |  3 ---
 libavcodec/avcodec.c           |  5 -----
 libavcodec/avcodec.h           |  3 +--
 libavcodec/avs2_parser.c       |  4 ++--
 libavcodec/avs3_parser.c       |  4 ++--
 libavcodec/cpia.c              |  8 -------
 libavcodec/decode.c            |  5 -----
 libavcodec/h264_parser.c       |  7 +++---
 libavcodec/h264dec.c           |  6 -----
 libavcodec/mjpegdec.c          |  2 +-
 libavcodec/mpeg4video_parser.c |  4 ++--
 libavcodec/mpeg4videodec.c     |  3 ---
 libavcodec/mpegvideo_parser.c  |  5 -----
 libavcodec/vc1_parser.c        |  2 --
 libavcodec/version_major.h     |  1 -
 libavformat/avformat.c         | 33 ++++++++++++++++-----------
 libavformat/demux.c            | 41 +++++++++++++++++++---------------
 17 files changed, 55 insertions(+), 81 deletions(-)

diff --git a/libavcodec/av1_parser.c b/libavcodec/av1_parser.c
index e57e382757e..14dae92fe9f 100644
--- a/libavcodec/av1_parser.c
+++ b/libavcodec/av1_parser.c
@@ -168,9 +168,6 @@ static int av1_parser_parse(AVCodecParserContext *ctx,
                   timing->num_units_in_display_tick, timing->time_scale, INT_MAX);
     }
 
-    if (avctx->framerate.num)
-        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
-
 end:
     ff_cbs_fragment_reset(td);
 
diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c
index efa76d2740a..00a58518071 100644
--- a/libavcodec/avcodec.c
+++ b/libavcodec/avcodec.c
@@ -349,11 +349,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
             ret = AVERROR(EINVAL);
             goto free_and_end;
         }
-
-#if FF_API_AVCTX_TIMEBASE
-        if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
-            avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
-#endif
     }
     if (codec->priv_class)
         av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 8aa08500a46..f82608561ac 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -543,8 +543,7 @@ typedef struct AVCodecContext {
      * (fixed_vop_rate == 0 implies that it is different from the framerate)
      *
      * - encoding: MUST be set by user.
-     * - decoding: the use of this field for decoding is deprecated.
-     *             Use framerate instead.
+     * - decoding: unused.
      */
     AVRational time_base;
 
diff --git a/libavcodec/avs2_parser.c b/libavcodec/avs2_parser.c
index 0350517493a..200134f91db 100644
--- a/libavcodec/avs2_parser.c
+++ b/libavcodec/avs2_parser.c
@@ -112,9 +112,9 @@ static void parse_avs2_seq_header(AVCodecParserContext *s, const uint8_t *buf,
     s->height = height;
     s->coded_width = FFALIGN(width, 8);
     s->coded_height = FFALIGN(height, 8);
-    avctx->framerate.num = avctx->time_base.den =
+    avctx->framerate.num =
         ff_avs2_frame_rate_tab[frame_rate_code].num;
-    avctx->framerate.den = avctx->time_base.num =
+    avctx->framerate.den =
         ff_avs2_frame_rate_tab[frame_rate_code].den;
     avctx->has_b_frames = FFMAX(avctx->has_b_frames, !low_delay);
 
diff --git a/libavcodec/avs3_parser.c b/libavcodec/avs3_parser.c
index a9fd879e9de..a819b5783d6 100644
--- a/libavcodec/avs3_parser.c
+++ b/libavcodec/avs3_parser.c
@@ -117,8 +117,8 @@ static void parse_avs3_nal_units(AVCodecParserContext *s, const uint8_t *buf,
             low_delay = get_bits(&gb, 1);
             avctx->has_b_frames = FFMAX(avctx->has_b_frames, !low_delay);
 
-            avctx->framerate.num = avctx->time_base.den = ff_avs3_frame_rate_tab[ratecode].num;
-            avctx->framerate.den = avctx->time_base.num = ff_avs3_frame_rate_tab[ratecode].den;
+            avctx->framerate.num = ff_avs3_frame_rate_tab[ratecode].num;
+            avctx->framerate.den = ff_avs3_frame_rate_tab[ratecode].den;
 
             s->width  = s->coded_width = avctx->width;
             s->height = s->coded_height = avctx->height;
diff --git a/libavcodec/cpia.c b/libavcodec/cpia.c
index 99362e73f07..bfd270dae2b 100644
--- a/libavcodec/cpia.c
+++ b/libavcodec/cpia.c
@@ -198,14 +198,6 @@ static av_cold int cpia_decode_init(AVCodecContext *avctx)
     // output pixel format
     avctx->pix_fmt = AV_PIX_FMT_YUV420P;
 
-    /* The default timebase set by the v4l2 demuxer leads to probing which is buggy.
-     * Set some reasonable time_base to skip this.
-     */
-    if (avctx->time_base.num == 1 && avctx->time_base.den == 1000000) {
-        avctx->time_base.num = 1;
-        avctx->time_base.den = 60;
-    }
-
     s->frame = av_frame_alloc();
     if (!s->frame)
         return AVERROR(ENOMEM);
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 8e790102136..bc6966d454a 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -434,11 +434,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
 #endif
         ret = pkt->size;
 
-#if FF_API_AVCTX_TIMEBASE
-    if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
-        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
-#endif
-
     /* do not stop draining when actual_got_frame != 0 or ret < 0 */
     /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
     if (avci->draining && !actual_got_frame) {
diff --git a/libavcodec/h264_parser.c b/libavcodec/h264_parser.c
index 3ed23fb9cae..46134a1c483 100644
--- a/libavcodec/h264_parser.c
+++ b/libavcodec/h264_parser.c
@@ -593,6 +593,7 @@ static int h264_parse(AVCodecParserContext *s,
 {
     H264ParseContext *p = s->priv_data;
     ParseContext *pc = &p->pc;
+    AVRational time_base = { 0, 1 };
     int next;
 
     if (!p->got_first) {
@@ -624,7 +625,7 @@ static int h264_parse(AVCodecParserContext *s,
     parse_nal_units(s, avctx, buf, buf_size);
 
     if (avctx->framerate.num)
-        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
+        time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
     if (p->sei.picture_timing.cpb_removal_delay >= 0) {
         s->dts_sync_point    = p->sei.buffering_period.present;
         s->dts_ref_dts_delta = p->sei.picture_timing.cpb_removal_delay;
@@ -640,9 +641,9 @@ static int h264_parse(AVCodecParserContext *s,
     }
 
     if (s->dts_sync_point >= 0) {
-        int64_t den = avctx->time_base.den * (int64_t)avctx->pkt_timebase.num;
+        int64_t den = time_base.den * (int64_t)avctx->pkt_timebase.num;
         if (den > 0) {
-            int64_t num = avctx->time_base.num * (int64_t)avctx->pkt_timebase.den;
+            int64_t num = time_base.num * (int64_t)avctx->pkt_timebase.den;
             if (s->dts != AV_NOPTS_VALUE) {
                 // got DTS from the stream, update reference timestamp
                 p->reference_dts = s->dts - av_rescale(s->dts_ref_dts_delta, num, den);
diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
index 9f7b3782e84..2d691731c5d 100644
--- a/libavcodec/h264dec.c
+++ b/libavcodec/h264dec.c
@@ -382,12 +382,6 @@ static av_cold int h264_decode_init(AVCodecContext *avctx)
         return AVERROR_UNKNOWN;
     }
 
-    if (avctx->ticks_per_frame == 1) {
-        if(h->avctx->time_base.den < INT_MAX/2) {
-            h->avctx->time_base.den *= 2;
-        } else
-            h->avctx->time_base.num /= 2;
-    }
     avctx->ticks_per_frame = 2;
 
     if (!avctx->internal->is_copy) {
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index f33911e1a86..b2be55af4af 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -436,7 +436,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
 
         /* test interlaced mode */
         if (s->first_picture   &&
-            (s->multiscope != 2 || s->avctx->time_base.den >= 25 * s->avctx->time_base.num) &&
+            (s->multiscope != 2 || s->avctx->pkt_timebase.den >= 25 * s->avctx->pkt_timebase.num) &&
             s->orig_height != 0 &&
             s->height < ((s->orig_height * 3) / 4)) {
             s->interlaced                    = 1;
diff --git a/libavcodec/mpeg4video_parser.c b/libavcodec/mpeg4video_parser.c
index e32a93d2964..3beb5f6dae0 100644
--- a/libavcodec/mpeg4video_parser.c
+++ b/libavcodec/mpeg4video_parser.c
@@ -114,11 +114,11 @@ static int mpeg4_decode_header(AVCodecParserContext *s1, AVCodecContext *avctx,
         if (ret < 0)
             return ret;
     }
-    if((s1->flags & PARSER_FLAG_USE_CODEC_TS) && s->avctx->time_base.den>0 && ret>=0){
+    if((s1->flags & PARSER_FLAG_USE_CODEC_TS) && s->avctx->framerate.num>0 && ret>=0){
         av_assert1(s1->pts == AV_NOPTS_VALUE);
         av_assert1(s1->dts == AV_NOPTS_VALUE);
 
-        s1->pts = av_rescale_q(s->time, (AVRational){1, s->avctx->time_base.den}, (AVRational){1, 1200000});
+        s1->pts = av_rescale_q(s->time, (AVRational){1, s->avctx->framerate.num}, (AVRational){1, 1200000});
     }
 
     s1->pict_type     = s->pict_type;
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index 0a100d2064e..f96b6a31171 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -2648,8 +2648,6 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
     else
         s->avctx->framerate.den = 1;
 
-    s->avctx->time_base = av_inv_q(av_mul_q(s->avctx->framerate, (AVRational){s->avctx->ticks_per_frame, 1}));
-
     ctx->t_frame = 0;
 
     if (ctx->shape != BIN_ONLY_SHAPE) {
@@ -3145,7 +3143,6 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb,
                "time_increment_bits set to %d bits, based on bitstream analysis\n", ctx->time_increment_bits);
         if (s->avctx->framerate.num && 4*s->avctx->framerate.num < 1<<ctx->time_increment_bits) {
             s->avctx->framerate.num = 1<<ctx->time_increment_bits;
-            s->avctx->time_base = av_inv_q(av_mul_q(s->avctx->framerate, (AVRational){s->avctx->ticks_per_frame, 1}));
         }
     }
 
diff --git a/libavcodec/mpegvideo_parser.c b/libavcodec/mpegvideo_parser.c
index ac6efb69091..57bc1f706cc 100644
--- a/libavcodec/mpegvideo_parser.c
+++ b/libavcodec/mpegvideo_parser.c
@@ -241,11 +241,6 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
         s->coded_width  = FFALIGN(pc->width,  16);
         s->coded_height = FFALIGN(pc->height, 16);
     }
-
-#if FF_API_AVCTX_TIMEBASE
-    if (avctx->framerate.num)
-        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
-#endif
 }
 
 static int mpegvideo_parse(AVCodecParserContext *s,
diff --git a/libavcodec/vc1_parser.c b/libavcodec/vc1_parser.c
index a459a2aa7d7..4167215fb11 100644
--- a/libavcodec/vc1_parser.c
+++ b/libavcodec/vc1_parser.c
@@ -112,8 +112,6 @@ static void vc1_extract_header(AVCodecParserContext *s, AVCodecContext *avctx,
 
         break;
     }
-    if (avctx->framerate.num)
-        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
     s->format = vpc->v.chromaformat == 1 ? AV_PIX_FMT_YUV420P
                                          : AV_PIX_FMT_NONE;
     if (avctx->width && avctx->height) {
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 1b96c4c8fe9..6e85ae3e312 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -38,7 +38,6 @@
  */
 
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_AVCTX_TIMEBASE    (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_FLAG_TRUNCATED      (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_SUB_TEXT_FORMAT     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_IDCT_NONE           (LIBAVCODEC_VERSION_MAJOR < 60)
diff --git a/libavformat/avformat.c b/libavformat/avformat.c
index 88ff46a5744..a2767836b31 100644
--- a/libavformat/avformat.c
+++ b/libavformat/avformat.c
@@ -703,6 +703,10 @@ int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
 {
     const AVCodecContext *const dec_ctx = cffstream(ist)->avctx;
     AVCodecContext       *const enc_ctx =  ffstream(ost)->avctx;
+    AVRational dec_ctx_tb = dec_ctx->framerate.num ? av_inv_q(av_mul_q(dec_ctx->framerate,
+	                                                          (AVRational){dec_ctx->ticks_per_frame, 1}))
+                                                   : (ist->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? (AVRational){0, 1}
+                                                                                                      : ist->time_base);
 
     enc_ctx->time_base = ist->time_base;
     /*
@@ -715,38 +719,41 @@ int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
         if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
             && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
             && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
-            && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
-            && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
+            && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx_tb)
+            && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx_tb) < 1.0/500
             || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
             enc_ctx->time_base.num = ist->r_frame_rate.den;
             enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
             enc_ctx->ticks_per_frame = 2;
         } else
 #endif
-            if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
+            if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->framerate.num &&
+                av_q2d(av_inv_q(dec_ctx->framerate)) > 2*av_q2d(ist->time_base)
                    && av_q2d(ist->time_base) < 1.0/500
-                   || copy_tb == AVFMT_TBCF_DECODER) {
-            enc_ctx->time_base = dec_ctx->time_base;
+                   || (copy_tb == AVFMT_TBCF_DECODER &&
+                       (dec_ctx->framerate.num || ist->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))) {
+            enc_ctx->time_base = dec_ctx_tb;
             enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
             enc_ctx->time_base.den *= 2;
             enc_ctx->ticks_per_frame = 2;
         }
     } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
                && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
-        if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
-            && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
+        if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->framerate.num
+            && av_q2d(av_inv_q(dec_ctx->framerate)) > av_q2d(ist->time_base)
             && av_q2d(ist->time_base) < 1.0/500
-            || copy_tb == AVFMT_TBCF_DECODER) {
-            enc_ctx->time_base = dec_ctx->time_base;
+            || (copy_tb == AVFMT_TBCF_DECODER &&
+                (dec_ctx->framerate.num || ist->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))) {
+            enc_ctx->time_base = dec_ctx_tb;
             enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
         }
     }
 
     if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
-        && dec_ctx->time_base.num < dec_ctx->time_base.den
-        && dec_ctx->time_base.num > 0
-        && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
-        enc_ctx->time_base = dec_ctx->time_base;
+        && dec_ctx_tb.num < dec_ctx_tb.den
+        && dec_ctx_tb.num > 0
+        && 121LL*dec_ctx_tb.num > dec_ctx_tb.den) {
+        enc_ctx->time_base = dec_ctx_tb;
     }
 
     av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
diff --git a/libavformat/demux.c b/libavformat/demux.c
index ba2991750bc..c39919b978d 100644
--- a/libavformat/demux.c
+++ b/libavformat/demux.c
@@ -2156,10 +2156,19 @@ static int get_std_framerate(int i)
  * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
  * MPEG-2 commonly misuses field repeat flags to store different framerates.
  * And there are "variable" fps files this needs to detect as well. */
-static int tb_unreliable(AVCodecContext *c)
+static int tb_unreliable(AVFormatContext *ic, AVStream *st)
 {
-    if (c->time_base.den >= 101LL * c->time_base.num ||
-        c->time_base.den <    5LL * c->time_base.num ||
+    FFStream *const sti = ffstream(st);
+    AVCodecContext *c = sti->avctx;
+    AVRational time_base = c->framerate.num ? av_inv_q(av_mul_q(c->framerate,
+	                                                   (AVRational){c->ticks_per_frame, 1}))
+                                            /* NOHEADER check added to not break existing behavior */
+                                            : (((ic->ctx_flags & AVFMTCTX_NOHEADER) ||
+                                                st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) ? (AVRational){0, 1}
+                                                                                                : st->time_base);
+
+    if (time_base.den >= 101LL * time_base.num ||
+        time_base.den <    5LL * time_base.num ||
         // c->codec_tag == AV_RL32("DIVX") ||
         // c->codec_tag == AV_RL32("XVID") ||
         c->codec_tag == AV_RL32("mp4v") ||
@@ -2243,11 +2252,11 @@ void ff_rfps_calculate(AVFormatContext *ic)
         // the check for tb_unreliable() is not completely correct, since this is not about handling
         // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
         // ipmovie.c produces.
-        if (tb_unreliable(sti->avctx) && sti->info->duration_count > 15 && sti->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num &&
+        if (tb_unreliable(ic, st) && sti->info->duration_count > 15 && sti->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num &&
             sti->info->duration_gcd < INT64_MAX / st->time_base.num)
             av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * sti->info->duration_gcd, INT_MAX);
         if (sti->info->duration_count > 1 && !st->r_frame_rate.num
-            && tb_unreliable(sti->avctx)) {
+            && tb_unreliable(ic, st)) {
             int num = 0;
             double best_error = 0.01;
             AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
@@ -2459,14 +2468,6 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
         FFStream *const sti = ffstream(st);
         AVCodecContext *const avctx = sti->avctx;
 
-        if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
-            st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
-/*            if (!st->time_base.num)
-                st->time_base = */
-            if (!avctx->time_base.num)
-                avctx->time_base = st->time_base;
-        }
-
         /* check if the caller has overridden the codec id */
         // only for the split stuff
         if (!sti->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && sti->request_probe <= 0) {
@@ -2544,7 +2545,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
              * the correct fps. */
             if (av_q2d(st->time_base) > 0.0005)
                 fps_analyze_framecount *= 2;
-            if (!tb_unreliable(sti->avctx))
+            if (!tb_unreliable(ic, st))
                 fps_analyze_framecount = 0;
             if (ic->fps_probe_size >= 0)
                 fps_analyze_framecount = ic->fps_probe_size;
@@ -2857,12 +2858,16 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
                     av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
                               best_fps, 12 * 1001, INT_MAX);
             }
-
             if (!st->r_frame_rate.num) {
-                if (    avctx->time_base.den * (int64_t) st->time_base.num
-                    <= avctx->time_base.num * (uint64_t)avctx->ticks_per_frame * st->time_base.den) {
+                AVRational time_base = avctx->framerate.num ? av_inv_q(av_mul_q(avctx->framerate,
+                                                                       (AVRational){avctx->ticks_per_frame, 1}))
+                                                            /* NOHEADER check added to not break existing behavior */
+                                                            : ((ic->ctx_flags & AVFMTCTX_NOHEADER) ? (AVRational){0, 1}
+                                                                                                   : st->time_base);
+                if (   time_base.den * (int64_t) st->time_base.num
+                    <= time_base.num * (uint64_t)avctx->ticks_per_frame * st->time_base.den) {
                     av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
-                              avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
+                              time_base.den, (int64_t)time_base.num * avctx->ticks_per_frame, INT_MAX);
                 } else {
                     st->r_frame_rate.num = st->time_base.den;
                     st->r_frame_rate.den = st->time_base.num;
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 15/33] avcodec: remove FF_API_FLAG_TRUNCATED

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/avcodec.h           |  9 -----
 libavcodec/codec.h             |  6 ----
 libavcodec/decode.c            |  4 ---
 libavcodec/h263_parser.c       | 11 ------
 libavcodec/h263_parser.h       | 29 ---------------
 libavcodec/h263dec.c           | 42 ----------------------
 libavcodec/mpeg12.c            | 66 ----------------------------------
 libavcodec/mpeg12.h            |  9 -----
 libavcodec/mpeg12dec.c         | 31 ----------------
 libavcodec/mpeg4video_parser.c | 12 -------
 libavcodec/mpeg4video_parser.h | 34 ------------------
 libavcodec/mpeg4videodec.c     |  3 --
 libavcodec/mpegvideo.c         |  9 -----
 libavcodec/mpegvideo.h         |  7 ----
 libavcodec/mpegvideo_dec.c     |  8 -----
 libavcodec/mpegvideo_parser.c  |  7 +---
 libavcodec/options_table.h     |  3 --
 libavcodec/pthread.c           |  3 --
 libavcodec/version_major.h     |  1 -
 19 files changed, 1 insertion(+), 293 deletions(-)
 delete mode 100644 libavcodec/h263_parser.h
 delete mode 100644 libavcodec/mpeg4video_parser.h

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index f82608561ac..9066f6c5297 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -294,15 +294,6 @@ typedef struct RcOverride{
  * error[?] variables will be set during encoding.
  */
 #define AV_CODEC_FLAG_PSNR            (1 << 15)
-#if FF_API_FLAG_TRUNCATED
-/**
- * Input bitstream might be truncated at a random location
- * instead of only at frame boundaries.
- *
- * @deprecated use codec parsers for packetizing input
- */
-#define AV_CODEC_FLAG_TRUNCATED       (1 << 16)
-#endif
 /**
  * Use interlaced DCT.
  */
diff --git a/libavcodec/codec.h b/libavcodec/codec.h
index 8bf85b2f9c8..035bcd080b5 100644
--- a/libavcodec/codec.h
+++ b/libavcodec/codec.h
@@ -50,12 +50,6 @@
  * avcodec_default_get_buffer2 or avcodec_default_get_encode_buffer.
  */
 #define AV_CODEC_CAP_DR1                 (1 <<  1)
-#if FF_API_FLAG_TRUNCATED
-/**
- * @deprecated Use parsers to always send proper frames.
- */
-#define AV_CODEC_CAP_TRUNCATED           (1 <<  3)
-#endif
 /**
  * Encoder or decoder requires flushing with NULL input at the end in order to
  * give the complete and correct output.
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index bc6966d454a..c37d607e27f 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -427,11 +427,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
     if (!got_frame)
         av_frame_unref(frame);
 
-#if FF_API_FLAG_TRUNCATED
-    if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
-#else
     if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO)
-#endif
         ret = pkt->size;
 
     /* do not stop draining when actual_got_frame != 0 or ret < 0 */
diff --git a/libavcodec/h263_parser.c b/libavcodec/h263_parser.c
index 7a742caa80b..f70a7911777 100644
--- a/libavcodec/h263_parser.c
+++ b/libavcodec/h263_parser.c
@@ -25,16 +25,9 @@
  */
 
 #include "parser.h"
-#if FF_API_FLAG_TRUNCATED
-/* Nuke this header when removing FF_API_FLAG_TRUNCATED */
-#include "h263_parser.h"
-
-int ff_h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
-#else
 
 static int h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
 {
-#endif
     int vop_found, i;
     uint32_t state;
 
@@ -80,11 +73,7 @@ static int h263_parse(AVCodecParserContext *s,
     if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
         next = buf_size;
     } else {
-#if FF_API_FLAG_TRUNCATED
-        next= ff_h263_find_frame_end(pc, buf, buf_size);
-#else
         next = h263_find_frame_end(pc, buf, buf_size);
-#endif
 
         if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
             *poutbuf = NULL;
diff --git a/libavcodec/h263_parser.h b/libavcodec/h263_parser.h
deleted file mode 100644
index 565a222bc1e..00000000000
--- a/libavcodec/h263_parser.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * H.263 parser
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_H263_PARSER_H
-#define AVCODEC_H263_PARSER_H
-
-#include "parser.h"
-
-int ff_h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
-
-#endif /* AVCODEC_H263_PARSER_H */
diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index 0a2d7487a83..f4e7048a5f2 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -36,17 +36,11 @@
 #include "flvdec.h"
 #include "h263.h"
 #include "h263dec.h"
-#if FF_API_FLAG_TRUNCATED
-#include "h263_parser.h"
-#endif
 #include "hwconfig.h"
 #include "mpeg_er.h"
 #include "mpeg4video.h"
 #include "mpeg4videodec.h"
 #include "mpeg4videodefs.h"
-#if FF_API_FLAG_TRUNCATED
-#include "mpeg4video_parser.h"
-#endif
 #include "mpegutils.h"
 #include "mpegvideo.h"
 #include "mpegvideodec.h"
@@ -163,14 +157,6 @@ static int get_consumed_bytes(MpegEncContext *s, int buf_size)
         /* We would have to scan through the whole buf to handle the weird
          * reordering ... */
         return buf_size;
-#if FF_API_FLAG_TRUNCATED
-    } else if (s->avctx->flags & AV_CODEC_FLAG_TRUNCATED) {
-        pos -= s->parse_context.last_index;
-        // padding is not really read so this might be -1
-        if (pos < 0)
-            pos = 0;
-        return pos;
-#endif
     } else {
         // avoid infinite loops (maybe not needed...)
         if (pos == 0)
@@ -448,28 +434,6 @@ int ff_h263_decode_frame(AVCodecContext *avctx, AVFrame *pict,
         return 0;
     }
 
-#if FF_API_FLAG_TRUNCATED
-    if (s->avctx->flags & AV_CODEC_FLAG_TRUNCATED) {
-        int next;
-
-        if (CONFIG_MPEG4_DECODER && s->codec_id == AV_CODEC_ID_MPEG4) {
-            next = ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
-        } else if (CONFIG_H263_DECODER && s->codec_id == AV_CODEC_ID_H263) {
-            next = ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
-        } else if (CONFIG_H263P_DECODER && s->codec_id == AV_CODEC_ID_H263P) {
-            next = ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
-        } else {
-            av_log(s->avctx, AV_LOG_ERROR,
-                   "this codec does not support truncated bitstreams\n");
-            return AVERROR(ENOSYS);
-        }
-
-        if (ff_combine_frame(&s->parse_context, next, (const uint8_t **)&buf,
-                             &buf_size) < 0)
-            return buf_size;
-    }
-#endif
-
 retry:
     if (s->divx_packed && s->bitstream_buffer_size) {
         int i;
@@ -749,9 +713,6 @@ const FFCodec ff_h263_decoder = {
     .close          = ff_h263_decode_end,
     FF_CODEC_DECODE_CB(ff_h263_decode_frame),
     .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
-#if FF_API_FLAG_TRUNCATED
-                      AV_CODEC_CAP_TRUNCATED |
-#endif
                       AV_CODEC_CAP_DELAY,
     .caps_internal  = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .flush          = ff_mpeg_flush,
@@ -770,9 +731,6 @@ const FFCodec ff_h263p_decoder = {
     .close          = ff_h263_decode_end,
     FF_CODEC_DECODE_CB(ff_h263_decode_frame),
     .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
-#if FF_API_FLAG_TRUNCATED
-                      AV_CODEC_CAP_TRUNCATED |
-#endif
                       AV_CODEC_CAP_DELAY,
     .caps_internal  = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .flush          = ff_mpeg_flush,
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 5d5f39388f9..a256d45c85b 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -167,72 +167,6 @@ av_cold void ff_mpeg12_init_vlcs(void)
     ff_thread_once(&init_static_once, mpeg12_init_vlcs);
 }
 
-#if FF_API_FLAG_TRUNCATED
-/**
- * Find the end of the current frame in the bitstream.
- * @return the position of the first byte of the next frame, or -1
- */
-int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
-{
-    int i;
-    uint32_t state = pc->state;
-
-    /* EOF considered as end of frame */
-    if (buf_size == 0)
-        return 0;
-
-/*
- 0  frame start         -> 1/4
- 1  first_SEQEXT        -> 0/2
- 2  first field start   -> 3/0
- 3  second_SEQEXT       -> 2/0
- 4  searching end
-*/
-
-    for (i = 0; i < buf_size; i++) {
-        av_assert1(pc->frame_start_found >= 0 && pc->frame_start_found <= 4);
-        if (pc->frame_start_found & 1) {
-            if (state == EXT_START_CODE && (buf[i] & 0xF0) != 0x80)
-                pc->frame_start_found--;
-            else if (state == EXT_START_CODE + 2) {
-                if ((buf[i] & 3) == 3)
-                    pc->frame_start_found = 0;
-                else
-                    pc->frame_start_found = (pc->frame_start_found + 1) & 3;
-            }
-            state++;
-        } else {
-            i = avpriv_find_start_code(buf + i, buf + buf_size, &state) - buf - 1;
-            if (pc->frame_start_found == 0 && state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE) {
-                i++;
-                pc->frame_start_found = 4;
-            }
-            if (state == SEQ_END_CODE) {
-                pc->frame_start_found = 0;
-                pc->state=-1;
-                return i+1;
-            }
-            if (pc->frame_start_found == 2 && state == SEQ_START_CODE)
-                pc->frame_start_found = 0;
-            if (pc->frame_start_found  < 4 && state == EXT_START_CODE)
-                pc->frame_start_found++;
-            if (pc->frame_start_found == 4 && (state & 0xFFFFFF00) == 0x100) {
-                if (state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE) {
-                    pc->frame_start_found = 0;
-                    pc->state             = -1;
-                    return i - 3;
-                }
-            }
-            if (pc->frame_start_found == 0 && s && state == PICTURE_START_CODE) {
-                ff_fetch_timestamp(s, i - 3, 1, i > 3);
-            }
-        }
-    }
-    pc->state = state;
-    return END_NOT_FOUND;
-}
-#endif
-
 #define MAX_INDEX (64 - 1)
 
 int ff_mpeg1_decode_block_intra(GetBitContext *gb,
diff --git a/libavcodec/mpeg12.h b/libavcodec/mpeg12.h
index 4e2e67eae18..86dd627e954 100644
--- a/libavcodec/mpeg12.h
+++ b/libavcodec/mpeg12.h
@@ -34,15 +34,6 @@
 #define EXT_START_CODE          0x000001b5
 #define USER_START_CODE         0x000001b2
 
-#include "version_major.h"
-#if FF_API_FLAG_TRUNCATED
-#include <stdint.h>
-
-struct ParseContext;
-struct AVCodecParserContext;
-int ff_mpeg1_find_frame_end(struct ParseContext *pc, const uint8_t *buf, int buf_size, struct AVCodecParserContext *s);
-#endif
-
 void ff_mpeg12_find_best_frame_rate(AVRational frame_rate,
                                     int *code, int *ext_n, int *ext_d,
                                     int nonstandard);
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index 9999926f55d..457d985265d 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -1239,14 +1239,7 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
         (s1->save_progressive_seq != s->progressive_sequence && FFALIGN(s->height, 16) != FFALIGN(s->height, 32)) ||
         0) {
         if (s1->mpeg_enc_ctx_allocated) {
-#if FF_API_FLAG_TRUNCATED
-            ParseContext pc = s->parse_context;
-            s->parse_context.buffer = 0;
             ff_mpv_common_end(s);
-            s->parse_context = pc;
-#else
-            ff_mpv_common_end(s);
-#endif
             s1->mpeg_enc_ctx_allocated = 0;
         }
 
@@ -2482,11 +2475,7 @@ static int decode_chunks(AVCodecContext *avctx, AVFrame *picture,
             if (avctx->err_recognition & AV_EF_EXPLODE && s2->er.error_count)
                 return AVERROR_INVALIDDATA;
 
-#if FF_API_FLAG_TRUNCATED
-            return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index);
-#else
             return FFMAX(0, buf_ptr - buf);
-#endif
         }
 
         input_size = buf_end - buf_ptr;
@@ -2799,17 +2788,6 @@ static int mpeg_decode_frame(AVCodecContext *avctx, AVFrame *picture,
         return buf_size;
     }
 
-#if FF_API_FLAG_TRUNCATED
-    if (s2->avctx->flags & AV_CODEC_FLAG_TRUNCATED) {
-        int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf,
-                                           buf_size, NULL);
-
-        if (ff_combine_frame(&s2->parse_context, next,
-                             (const uint8_t **) &buf, &buf_size) < 0)
-            return buf_size;
-    }
-#endif
-
     if (s->mpeg_enc_ctx_allocated == 0 && (   s2->codec_tag == AV_RL32("VCR2")
                                            || s2->codec_tag == AV_RL32("BW10")
                                           ))
@@ -2886,9 +2864,6 @@ const FFCodec ff_mpeg1video_decoder = {
     .close                 = mpeg_decode_end,
     FF_CODEC_DECODE_CB(mpeg_decode_frame),
     .p.capabilities        = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
-#if FF_API_FLAG_TRUNCATED
-                             AV_CODEC_CAP_TRUNCATED |
-#endif
                              AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
     .caps_internal         = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .flush                 = flush,
@@ -2918,9 +2893,6 @@ const FFCodec ff_mpeg2video_decoder = {
     .close          = mpeg_decode_end,
     FF_CODEC_DECODE_CB(mpeg_decode_frame),
     .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
-#if FF_API_FLAG_TRUNCATED
-                      AV_CODEC_CAP_TRUNCATED |
-#endif
                       AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
     .caps_internal  = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .flush          = flush,
@@ -2963,9 +2935,6 @@ const FFCodec ff_mpegvideo_decoder = {
     .close          = mpeg_decode_end,
     FF_CODEC_DECODE_CB(mpeg_decode_frame),
     .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
-#if FF_API_FLAG_TRUNCATED
-                      AV_CODEC_CAP_TRUNCATED |
-#endif
                       AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
     .caps_internal  = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .flush          = flush,
diff --git a/libavcodec/mpeg4video_parser.c b/libavcodec/mpeg4video_parser.c
index 3beb5f6dae0..28353aa146b 100644
--- a/libavcodec/mpeg4video_parser.c
+++ b/libavcodec/mpeg4video_parser.c
@@ -27,10 +27,6 @@
 #include "mpegvideo.h"
 #include "mpeg4videodec.h"
 #include "mpeg4videodefs.h"
-#if FF_API_FLAG_TRUNCATED
-/* Nuke this header when removing FF_API_FLAG_TRUNCATED */
-#include "mpeg4video_parser.h"
-#endif
 
 struct Mp4vParseContext {
     ParseContext pc;
@@ -38,15 +34,11 @@ struct Mp4vParseContext {
     int first_picture;
 };
 
-#if FF_API_FLAG_TRUNCATED
-int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
-#else
 /**
  * Find the end of the current frame in the bitstream.
  * @return the position of the first byte of the next frame, or -1
  */
 static int mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
-#endif
 {
     int vop_found, i;
     uint32_t state;
@@ -148,11 +140,7 @@ static int mpeg4video_parse(AVCodecParserContext *s,
     if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
         next = buf_size;
     } else {
-#if FF_API_FLAG_TRUNCATED
-        next = ff_mpeg4_find_frame_end(pc, buf, buf_size);
-#else
         next = mpeg4_find_frame_end(pc, buf, buf_size);
-#endif
 
         if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
             *poutbuf      = NULL;
diff --git a/libavcodec/mpeg4video_parser.h b/libavcodec/mpeg4video_parser.h
deleted file mode 100644
index 8008e693b43..00000000000
--- a/libavcodec/mpeg4video_parser.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * MPEG-4 video parser prototypes
- * Copyright (c) 2003 Fabrice Bellard
- * Copyright (c) 2003 Michael Niedermayer
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_MPEG4VIDEO_PARSER_H
-#define AVCODEC_MPEG4VIDEO_PARSER_H
-
-#include "parser.h"
-
-/**
- * Find the end of the current frame in the bitstream.
- * @return the position of the first byte of the next frame, or -1
- */
-int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
-
-#endif /* AVCODEC_MPEG4VIDEO_PARSER_H */
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index f96b6a31171..d456e5dd113 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -3859,9 +3859,6 @@ const FFCodec ff_mpeg4_decoder = {
     .close                 = ff_h263_decode_end,
     FF_CODEC_DECODE_CB(ff_h263_decode_frame),
     .p.capabilities        = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
-#if FF_API_FLAG_TRUNCATED
-                             AV_CODEC_CAP_TRUNCATED |
-#endif
                              AV_CODEC_CAP_DELAY | AV_CODEC_CAP_FRAME_THREADS,
     .caps_internal         = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM |
                              FF_CODEC_CAP_ALLOCATE_PROGRESS,
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 836869c1d92..fc73abab9cd 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -738,10 +738,6 @@ av_cold int ff_mpv_common_init(MpegEncContext *s)
         nb_slices = max_slices;
     }
 
-#if FF_API_FLAG_TRUNCATED
-    s->parse_context.state = -1;
-#endif
-
     s->context_initialized = 1;
     memset(s->thread_context, 0, sizeof(s->thread_context));
     s->thread_context[0]   = s;
@@ -791,11 +787,6 @@ void ff_mpv_common_end(MpegEncContext *s)
     if (s->slice_context_count > 1)
         s->slice_context_count = 1;
 
-#if FF_API_FLAG_TRUNCATED
-    av_freep(&s->parse_context.buffer);
-    s->parse_context.buffer_size = 0;
-#endif
-
     av_freep(&s->bitstream_buffer);
     s->allocated_bitstream_buffer_size = 0;
 
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 42275953b9e..55828e61027 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -44,9 +44,6 @@
 #include "pixblockdsp.h"
 #include "put_bits.h"
 #include "ratecontrol.h"
-#if FF_API_FLAG_TRUNCATED
-#include "parser.h"
-#endif
 #include "mpegutils.h"
 #include "qpeldsp.h"
 #include "videodsp.h"
@@ -353,10 +350,6 @@ typedef struct MpegEncContext {
     GetBitContext last_resync_gb;    ///< used to search for the next resync marker
     int mb_num_left;                 ///< number of MBs left in this video packet (for partitioned Slices only)
 
-#if FF_API_FLAG_TRUNCATED
-    ParseContext parse_context;
-#endif
-
     /* H.263 specific */
     int gob_index;
     int obmc;                       ///< overlapped block motion compensation
diff --git a/libavcodec/mpegvideo_dec.c b/libavcodec/mpegvideo_dec.c
index 12c7144ffb1..7a0c51e53d1 100644
--- a/libavcodec/mpegvideo_dec.c
+++ b/libavcodec/mpegvideo_dec.c
@@ -554,14 +554,6 @@ void ff_mpeg_flush(AVCodecContext *avctx)
 
     s->mb_x = s->mb_y = 0;
 
-#if FF_API_FLAG_TRUNCATED
-    s->parse_context.state = -1;
-    s->parse_context.frame_start_found = 0;
-    s->parse_context.overread = 0;
-    s->parse_context.overread_index = 0;
-    s->parse_context.index = 0;
-    s->parse_context.last_index = 0;
-#endif
     s->bitstream_buffer_size = 0;
     s->pp_time = 0;
 }
diff --git a/libavcodec/mpegvideo_parser.c b/libavcodec/mpegvideo_parser.c
index 57bc1f706cc..8e7e88ff25e 100644
--- a/libavcodec/mpegvideo_parser.c
+++ b/libavcodec/mpegvideo_parser.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/avassert.h"
 #include "decode.h"
 #include "parser.h"
 #include "mpeg12.h"
@@ -33,7 +34,6 @@ struct MpvParseContext {
     int width, height;
 };
 
-#if !FF_API_FLAG_TRUNCATED
 /**
  * Find the end of the current frame in the bitstream.
  * @return the position of the first byte of the next frame, or -1
@@ -98,7 +98,6 @@ static int mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf,
     pc->state = state;
     return END_NOT_FOUND;
 }
-#endif
 
 static void mpegvideo_extract_headers(AVCodecParserContext *s,
                                       AVCodecContext *avctx,
@@ -255,11 +254,7 @@ static int mpegvideo_parse(AVCodecParserContext *s,
     if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
         next= buf_size;
     }else{
-#if FF_API_FLAG_TRUNCATED
-        next= ff_mpeg1_find_frame_end(pc, buf, buf_size, s);
-#else
         next = mpeg1_find_frame_end(pc, buf, buf_size, s);
-#endif
 
         if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
             *poutbuf = NULL;
diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
index 322ec7a1566..52ecc25cf9b 100644
--- a/libavcodec/options_table.h
+++ b/libavcodec/options_table.h
@@ -64,9 +64,6 @@ static const AVOption avcodec_options[] = {
 {"pass2", "use internal 2-pass ratecontrol in second pass mode", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_PASS2 }, INT_MIN, INT_MAX, 0, "flags"},
 {"gray", "only decode/encode grayscale", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_GRAY }, INT_MIN, INT_MAX, V|E|D, "flags"},
 {"psnr", "error[?] variables will be set during encoding", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_PSNR }, INT_MIN, INT_MAX, V|E, "flags"},
-#if FF_API_FLAG_TRUNCATED
-{"truncated", "(Deprecated, use parsers instead.) Input bitstream might be randomly truncated", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_TRUNCATED }, INT_MIN, INT_MAX, V|D | AV_OPT_FLAG_DEPRECATED, "flags"},
-#endif
 {"ildct", "use interlaced DCT", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_INTERLACED_DCT }, INT_MIN, INT_MAX, V|E, "flags"},
 {"low_delay", "force low delay", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_LOW_DELAY }, INT_MIN, INT_MAX, V|D|E, "flags"},
 {"global_header", "place global headers in extradata instead of every keyframe", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_GLOBAL_HEADER }, INT_MIN, INT_MAX, V|A|E, "flags"},
diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index 60ba87dac48..ca84b81391d 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -48,9 +48,6 @@
 static void validate_thread_parameters(AVCodecContext *avctx)
 {
     int frame_threading_supported = (avctx->codec->capabilities & AV_CODEC_CAP_FRAME_THREADS)
-#if FF_API_FLAG_TRUNCATED
-                                && !(avctx->flags  & AV_CODEC_FLAG_TRUNCATED)
-#endif
                                 && !(avctx->flags  & AV_CODEC_FLAG_LOW_DELAY)
                                 && !(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS);
     if (avctx->thread_count == 1) {
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 6e85ae3e312..eea761c7dd6 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -38,7 +38,6 @@
  */
 
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_FLAG_TRUNCATED      (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_SUB_TEXT_FORMAT     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_IDCT_NONE           (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_SVTAV1_OPTS         (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 16/33] avcodec: remove FF_API_SUB_TEXT_FORMAT

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/avcodec.h       | 9 ---------
 libavcodec/options_table.h | 4 ----
 libavcodec/version_major.h | 1 -
 3 files changed, 14 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 9066f6c5297..ecd02ff4747 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1868,15 +1868,6 @@ typedef struct AVCodecContext {
      */
     AVBufferRef *hw_frames_ctx;
 
-#if FF_API_SUB_TEXT_FORMAT
-    /**
-     * @deprecated unused
-     */
-    attribute_deprecated
-    int sub_text_format;
-#define FF_SUB_TEXT_FMT_ASS              0
-#endif
-
     /**
      * Audio only. The amount of padding (in samples) appended by the encoder to
      * the end of the audio. I.e. this number of decoded samples must be
diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
index 52ecc25cf9b..bcd6f381917 100644
--- a/libavcodec/options_table.h
+++ b/libavcodec/options_table.h
@@ -376,10 +376,6 @@ static const AVOption avcodec_options[] = {
 {"auto",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_SUB_CHARENC_MODE_AUTOMATIC},   INT_MIN, INT_MAX, S|D, "sub_charenc_mode"},
 {"pre_decoder", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_SUB_CHARENC_MODE_PRE_DECODER}, INT_MIN, INT_MAX, S|D, "sub_charenc_mode"},
 {"ignore",      NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_SUB_CHARENC_MODE_IGNORE},      INT_MIN, INT_MAX, S|D, "sub_charenc_mode"},
-#if FF_API_SUB_TEXT_FORMAT
-{"sub_text_format", "Deprecated, does nothing", OFFSET(sub_text_format), AV_OPT_TYPE_INT, {.i64 = FF_SUB_TEXT_FMT_ASS}, 0, 1, S|D | AV_OPT_FLAG_DEPRECATED, "sub_text_format"},
-{"ass",              NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_SUB_TEXT_FMT_ASS},              INT_MIN, INT_MAX, S|D, "sub_text_format"},
-#endif
 {"apply_cropping", NULL, OFFSET(apply_cropping), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, V | D },
 {"skip_alpha", "Skip processing alpha", OFFSET(skip_alpha), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, V|D },
 {"field_order", "Field order", OFFSET(field_order), AV_OPT_TYPE_INT, {.i64 = AV_FIELD_UNKNOWN }, 0, 5, V|D|E, "field_order" },
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index eea761c7dd6..04e6225f9b3 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -38,7 +38,6 @@
  */
 
 #define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_SUB_TEXT_FORMAT     (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_IDCT_NONE           (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_SVTAV1_OPTS         (LIBAVCODEC_VERSION_MAJOR < 60)
 #define FF_API_AYUV_CODECID        (LIBAVCODEC_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 17/33] avformat: remove FF_API_LAVF_PRIV_OPT

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/avformat.h      | 3 ---
 libavformat/version_major.h | 1 -
 2 files changed, 4 deletions(-)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 49e50a5120a..ac40e197f62 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1242,9 +1242,6 @@ typedef struct AVFormatContext {
  */
 #define AVFMT_FLAG_BITEXACT         0x0400
 #define AVFMT_FLAG_SORT_DTS    0x10000 ///< try to interleave outputted packets by dts (using this flag can slow demuxing down)
-#if FF_API_LAVF_PRIV_OPT
-#define AVFMT_FLAG_PRIV_OPT    0x20000 ///< Enable use of private options by delaying codec open (deprecated, does nothing)
-#endif
 #define AVFMT_FLAG_FAST_SEEK   0x80000 ///< Enable fast, but inaccurate seeks for some formats
 #define AVFMT_FLAG_SHORTEST   0x100000 ///< Stop muxing when the shortest stream stops.
 #define AVFMT_FLAG_AUTO_BSF   0x200000 ///< Add bitstream filters as requested by the muxer
diff --git a/libavformat/version_major.h b/libavformat/version_major.h
index 86af3ee4a5a..abc1699685a 100644
--- a/libavformat/version_major.h
+++ b/libavformat/version_major.h
@@ -41,7 +41,6 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  *
  */
-#define FF_API_LAVF_PRIV_OPT            (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_API_COMPUTE_PKT_FIELDS2      (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_API_AVIOCONTEXT_WRITTEN      (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_HLS_TS_OPTIONS               (LIBAVFORMAT_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 18/33] avformat: remove FF_API_AVIOCONTEXT_WRITTEN

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/avio.h          | 10 ----------
 libavformat/aviobuf.c       | 10 ----------
 libavformat/version_major.h |  1 -
 3 files changed, 21 deletions(-)

diff --git a/libavformat/avio.h b/libavformat/avio.h
index 4bf6b1fbdaa..5f13e0622d3 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -295,16 +295,6 @@ typedef struct AVIOContext {
      */
     int ignore_boundary_point;
 
-#if FF_API_AVIOCONTEXT_WRITTEN
-    /**
-     * @deprecated field utilized privately by libavformat. For a public
-     *             statistic of how many bytes were written out, see
-     *             AVIOContext::bytes_written.
-     */
-    attribute_deprecated
-    int64_t written;
-#endif
-
     /**
      * Maximum reached position before a backward seek in the write buffer,
      * used keeping track of already written data for a later flush.
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 257535a9642..4ad734a3c3e 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -125,11 +125,6 @@ void ffio_init_context(FFIOContext *ctx,
     ctx->current_type        = AVIO_DATA_MARKER_UNKNOWN;
     ctx->last_time           = AV_NOPTS_VALUE;
     ctx->short_seek_get      = NULL;
-#if FF_API_AVIOCONTEXT_WRITTEN
-FF_DISABLE_DEPRECATION_WARNINGS
-    s->written               = 0;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
 }
 
 AVIOContext *avio_alloc_context(
@@ -174,11 +169,6 @@ static void writeout(AVIOContext *s, const uint8_t *data, int len)
 
             if (s->pos + len > ctx->written_output_size) {
                 ctx->written_output_size = s->pos + len;
-#if FF_API_AVIOCONTEXT_WRITTEN
-FF_DISABLE_DEPRECATION_WARNINGS
-                s->written = ctx->written_output_size;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
             }
         }
     }
diff --git a/libavformat/version_major.h b/libavformat/version_major.h
index abc1699685a..044af1ebf6f 100644
--- a/libavformat/version_major.h
+++ b/libavformat/version_major.h
@@ -42,7 +42,6 @@
  *
  */
 #define FF_API_COMPUTE_PKT_FIELDS2      (LIBAVFORMAT_VERSION_MAJOR < 60)
-#define FF_API_AVIOCONTEXT_WRITTEN      (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_HLS_TS_OPTIONS               (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_API_AVSTREAM_CLASS           (LIBAVFORMAT_VERSION_MAJOR > 59)
 #define FF_API_GET_END_PTS              (LIBAVFORMAT_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 19/33] avformat: remove FF_HLS_TS_OPTIONS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/hlsenc.c        | 3 ---
 libavformat/version_major.h | 1 -
 2 files changed, 4 deletions(-)

diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index adf06ec7643..dcc363b42e3 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -3116,9 +3116,6 @@ static const AVOption options[] = {
     {"hls_init_time", "set segment length at init list",         OFFSET(init_time),     AV_OPT_TYPE_DURATION, {.i64 = 0},       0, INT64_MAX, E},
     {"hls_list_size", "set maximum number of playlist entries",  OFFSET(max_nb_segments),    AV_OPT_TYPE_INT,    {.i64 = 5},     0, INT_MAX, E},
     {"hls_delete_threshold", "set number of unreferenced segments to keep before deleting",  OFFSET(hls_delete_threshold),    AV_OPT_TYPE_INT,    {.i64 = 1},     1, INT_MAX, E},
-#if FF_HLS_TS_OPTIONS
-    {"hls_ts_options","set hls mpegts list of options for the container format used for hls (deprecated, use hls_segment_options instead of it.)", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL},  0, 0,    E | AV_OPT_FLAG_DEPRECATED},
-#endif
     {"hls_vtt_options","set hls vtt list of options for the container format used for hls", OFFSET(vtt_format_options_str), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,    E},
     {"hls_allow_cache", "explicitly set whether the client MAY (1) or MUST NOT (0) cache media segments", OFFSET(allowcache), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, E},
     {"hls_base_url",  "url to prepend to each playlist entry",   OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,       E},
diff --git a/libavformat/version_major.h b/libavformat/version_major.h
index 044af1ebf6f..057d1ac0fb0 100644
--- a/libavformat/version_major.h
+++ b/libavformat/version_major.h
@@ -42,7 +42,6 @@
  *
  */
 #define FF_API_COMPUTE_PKT_FIELDS2      (LIBAVFORMAT_VERSION_MAJOR < 60)
-#define FF_HLS_TS_OPTIONS               (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_API_AVSTREAM_CLASS           (LIBAVFORMAT_VERSION_MAJOR > 59)
 #define FF_API_GET_END_PTS              (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_API_AVIODIRCONTEXT           (LIBAVFORMAT_VERSION_MAJOR < 60)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 20/33] avformat: remove FF_API_AVSTREAM_CLASS

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 fftools/ffmpeg_mux_init.c   | 11 -----------
 libavformat/avformat.h      |  2 --
 libavformat/options.c       |  3 ---
 libavformat/version_major.h |  1 -
 4 files changed, 17 deletions(-)

diff --git a/fftools/ffmpeg_mux_init.c b/fftools/ffmpeg_mux_init.c
index f8ccf4a3e9b..34172406394 100644
--- a/fftools/ffmpeg_mux_init.c
+++ b/fftools/ffmpeg_mux_init.c
@@ -1983,18 +1983,7 @@ static int set_dispositions(Muxer *mux, const OptionsContext *o)
             if (!disp)
                 continue;
 
-#if LIBAVFORMAT_VERSION_MAJOR >= 60
             ret = av_opt_set(ost->st, "disposition", disp, 0);
-#else
-            {
-                const AVClass *class = av_stream_get_class();
-                const AVOption    *o = av_opt_find(&class, "disposition", NULL, 0, AV_OPT_SEARCH_FAKE_OBJ);
-
-                av_assert0(o);
-                ret = av_opt_eval_flags(&class, o, disp, &ost->st->disposition);
-            }
-#endif
-
             if (ret < 0)
                 goto finish;
         }
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index ac40e197f62..b986aacc785 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -838,12 +838,10 @@ const char *av_disposition_to_string(int disposition);
  * sizeof(AVStream) must not be used outside libav*.
  */
 typedef struct AVStream {
-#if FF_API_AVSTREAM_CLASS
     /**
      * A class for @ref avoptions. Set on stream creation.
      */
     const AVClass *av_class;
-#endif
 
     int index;    /**< stream index in AVFormatContext */
     /**
diff --git a/libavformat/options.c b/libavformat/options.c
index 0079a06d9a5..c7681122cd7 100644
--- a/libavformat/options.c
+++ b/libavformat/options.c
@@ -257,10 +257,7 @@ AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
         return NULL;
     st = &sti->pub;
 
-#if FF_API_AVSTREAM_CLASS
     st->av_class = &stream_class;
-#endif
-
     st->codecpar = avcodec_parameters_alloc();
     if (!st->codecpar)
         goto fail;
diff --git a/libavformat/version_major.h b/libavformat/version_major.h
index 057d1ac0fb0..1db8e7600eb 100644
--- a/libavformat/version_major.h
+++ b/libavformat/version_major.h
@@ -42,7 +42,6 @@
  *
  */
 #define FF_API_COMPUTE_PKT_FIELDS2      (LIBAVFORMAT_VERSION_MAJOR < 60)
-#define FF_API_AVSTREAM_CLASS           (LIBAVFORMAT_VERSION_MAJOR > 59)
 #define FF_API_GET_END_PTS              (LIBAVFORMAT_VERSION_MAJOR < 60)
 #define FF_API_AVIODIRCONTEXT           (LIBAVFORMAT_VERSION_MAJOR < 60)
 
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 21/33] avfilter: remove FF_API_SWS_PARAM_OPTION

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavfilter/buffersrc.c     | 11 -----------
 libavfilter/version_major.h |  1 -
 2 files changed, 12 deletions(-)

diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
index ae8bba19b07..ba17450b937 100644
--- a/libavfilter/buffersrc.c
+++ b/libavfilter/buffersrc.c
@@ -50,9 +50,6 @@ typedef struct BufferSourceContext {
     int               w, h;
     enum AVPixelFormat  pix_fmt;
     AVRational        pixel_aspect;
-#if FF_API_SWS_PARAM_OPTION
-    char              *sws_param;
-#endif
 
     AVBufferRef *hw_frames_ctx;
 
@@ -287,11 +284,6 @@ static av_cold int init_video(AVFilterContext *ctx)
            c->time_base.num, c->time_base.den, c->frame_rate.num, c->frame_rate.den,
            c->pixel_aspect.num, c->pixel_aspect.den);
 
-#if FF_API_SWS_PARAM_OPTION
-    if (c->sws_param)
-        av_log(ctx, AV_LOG_WARNING, "sws_param option is deprecated and ignored\n");
-#endif
-
     return 0;
 }
 
@@ -313,9 +305,6 @@ static const AVOption buffer_options[] = {
     { "pixel_aspect",  "sample aspect ratio",    OFFSET(pixel_aspect),     AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
     { "time_base",     NULL,                     OFFSET(time_base),        AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
     { "frame_rate",    NULL,                     OFFSET(frame_rate),       AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
-#if FF_API_SWS_PARAM_OPTION
-    { "sws_param",     NULL,                     OFFSET(sws_param),        AV_OPT_TYPE_STRING,                    .flags = V },
-#endif
     { NULL },
 };
 
diff --git a/libavfilter/version_major.h b/libavfilter/version_major.h
index de0cf6e9793..655e3d119d2 100644
--- a/libavfilter/version_major.h
+++ b/libavfilter/version_major.h
@@ -35,7 +35,6 @@
  * the public API and may change, break or disappear at any time.
  */
 
-#define FF_API_SWS_PARAM_OPTION             (LIBAVFILTER_VERSION_MAJOR < 9)
 #define FF_API_BUFFERSINK_ALLOC             (LIBAVFILTER_VERSION_MAJOR < 9)
 #define FF_API_PAD_COUNT                    (LIBAVFILTER_VERSION_MAJOR < 9)
 
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 22/33] avfilter: remove FF_API_BUFFERSINK_ALLOC

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavfilter/buffersink.c    | 22 ----------------------
 libavfilter/buffersink.h    | 36 ------------------------------------
 libavfilter/version_major.h |  1 -
 3 files changed, 59 deletions(-)

diff --git a/libavfilter/buffersink.c b/libavfilter/buffersink.c
index e269cf72d1b..306c283f775 100644
--- a/libavfilter/buffersink.c
+++ b/libavfilter/buffersink.c
@@ -154,28 +154,6 @@ int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx,
     return get_frame_internal(ctx, frame, 0, nb_samples);
 }
 
-#if FF_API_BUFFERSINK_ALLOC
-AVBufferSinkParams *av_buffersink_params_alloc(void)
-{
-    static const int pixel_fmts[] = { AV_PIX_FMT_NONE };
-    AVBufferSinkParams *params = av_malloc(sizeof(AVBufferSinkParams));
-    if (!params)
-        return NULL;
-
-    params->pixel_fmts = pixel_fmts;
-    return params;
-}
-
-AVABufferSinkParams *av_abuffersink_params_alloc(void)
-{
-    AVABufferSinkParams *params = av_mallocz(sizeof(AVABufferSinkParams));
-
-    if (!params)
-        return NULL;
-    return params;
-}
-#endif
-
 static av_cold int common_init(AVFilterContext *ctx)
 {
     BufferSinkContext *buf = ctx->priv;
diff --git a/libavfilter/buffersink.h b/libavfilter/buffersink.h
index 01e7c747d8e..64e08de53ee 100644
--- a/libavfilter/buffersink.h
+++ b/libavfilter/buffersink.h
@@ -94,42 +94,6 @@ int av_buffersink_get_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flag
  */
 #define AV_BUFFERSINK_FLAG_NO_REQUEST 2
 
-#if FF_API_BUFFERSINK_ALLOC
-/**
- * Deprecated and unused struct to use for initializing a buffersink context.
- */
-typedef struct AVBufferSinkParams {
-    const enum AVPixelFormat *pixel_fmts; ///< list of allowed pixel formats, terminated by AV_PIX_FMT_NONE
-} AVBufferSinkParams;
-
-/**
- * Create an AVBufferSinkParams structure.
- *
- * Must be freed with av_free().
- */
-attribute_deprecated
-AVBufferSinkParams *av_buffersink_params_alloc(void);
-
-/**
- * Deprecated and unused struct to use for initializing an abuffersink context.
- */
-typedef struct AVABufferSinkParams {
-    const enum AVSampleFormat *sample_fmts; ///< list of allowed sample formats, terminated by AV_SAMPLE_FMT_NONE
-    const int64_t *channel_layouts;         ///< list of allowed channel layouts, terminated by -1
-    const int *channel_counts;              ///< list of allowed channel counts, terminated by -1
-    int all_channel_counts;                 ///< if not 0, accept any channel count or layout
-    int *sample_rates;                      ///< list of allowed sample rates, terminated by -1
-} AVABufferSinkParams;
-
-/**
- * Create an AVABufferSinkParams structure.
- *
- * Must be freed with av_free().
- */
-attribute_deprecated
-AVABufferSinkParams *av_abuffersink_params_alloc(void);
-#endif
-
 /**
  * Set the frame size for an audio buffer sink.
  *
diff --git a/libavfilter/version_major.h b/libavfilter/version_major.h
index 655e3d119d2..5a8bf4eda21 100644
--- a/libavfilter/version_major.h
+++ b/libavfilter/version_major.h
@@ -35,7 +35,6 @@
  * the public API and may change, break or disappear at any time.
  */
 
-#define FF_API_BUFFERSINK_ALLOC             (LIBAVFILTER_VERSION_MAJOR < 9)
 #define FF_API_PAD_COUNT                    (LIBAVFILTER_VERSION_MAJOR < 9)
 
 #endif /* AVFILTER_VERSION_MAJOR_H */
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 23/33] avfilter: remove FF_API_PAD_COUNT

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavfilter/avfilter.c      | 21 ---------------------
 libavfilter/avfilter.h      | 10 ----------
 libavfilter/version_major.h |  2 --
 3 files changed, 33 deletions(-)

diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index c2ecdffa6f5..ed363351add 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -560,27 +560,6 @@ int avfilter_process_command(AVFilterContext *filter, const char *cmd, const cha
     return AVERROR(ENOSYS);
 }
 
-#if FF_API_PAD_COUNT
-int avfilter_pad_count(const AVFilterPad *pads)
-{
-    const AVFilter *filter;
-    void *opaque = NULL;
-
-    if (!pads)
-        return 0;
-
-    while (filter = av_filter_iterate(&opaque)) {
-        if (pads == filter->inputs)
-            return filter->nb_inputs;
-        if (pads == filter->outputs)
-            return filter->nb_outputs;
-    }
-
-    av_assert0(!"AVFilterPad list not from a filter");
-    return AVERROR_BUG;
-}
-#endif
-
 unsigned avfilter_filter_pad_count(const AVFilter *filter, int is_output)
 {
     return is_output ? filter->nb_outputs : filter->nb_inputs;
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index c2ec7a4b5fc..333eeb31c3d 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -76,16 +76,6 @@ typedef struct AVFilterPad     AVFilterPad;
 typedef struct AVFilterFormats AVFilterFormats;
 typedef struct AVFilterChannelLayouts AVFilterChannelLayouts;
 
-#if FF_API_PAD_COUNT
-/**
- * Get the number of elements in an AVFilter's inputs or outputs array.
- *
- * @deprecated Use avfilter_filter_pad_count() instead.
- */
-attribute_deprecated
-int avfilter_pad_count(const AVFilterPad *pads);
-#endif
-
 /**
  * Get the name of an AVFilterPad.
  *
diff --git a/libavfilter/version_major.h b/libavfilter/version_major.h
index 5a8bf4eda21..cb2238ffdd0 100644
--- a/libavfilter/version_major.h
+++ b/libavfilter/version_major.h
@@ -35,6 +35,4 @@
  * the public API and may change, break or disappear at any time.
  */
 
-#define FF_API_PAD_COUNT                    (LIBAVFILTER_VERSION_MAJOR < 9)
-
 #endif /* AVFILTER_VERSION_MAJOR_H */
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 24/33] avdevice: remove FF_API_DEVICE_CAPABILITIES

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavdevice/avdevice.c      |  19 ------
 libavdevice/avdevice.h      | 130 ------------------------------------
 libavdevice/version_major.h |   1 -
 3 files changed, 150 deletions(-)

diff --git a/libavdevice/avdevice.c b/libavdevice/avdevice.c
index b47f89c4bf2..38110ddfdb2 100644
--- a/libavdevice/avdevice.c
+++ b/libavdevice/avdevice.c
@@ -21,12 +21,6 @@
 #include "internal.h"
 #include "libavformat/mux.h"
 
-#if FF_API_DEVICE_CAPABILITIES
-const AVOption av_device_capabilities[] = {
-    { NULL }
-};
-#endif
-
 int avdevice_app_to_dev_control_message(struct AVFormatContext *s, enum AVAppToDevMessageType type,
                                         void *data, size_t data_size)
 {
@@ -43,19 +37,6 @@ int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToA
     return s->control_message_cb(s, type, data, data_size);
 }
 
-#if FF_API_DEVICE_CAPABILITIES
-int avdevice_capabilities_create(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s,
-                                 AVDictionary **device_options)
-{
-    return AVERROR(ENOSYS);
-}
-
-void avdevice_capabilities_free(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s)
-{
-    return;
-}
-#endif
-
 int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list)
 {
     int ret;
diff --git a/libavdevice/avdevice.h b/libavdevice/avdevice.h
index 185593053f7..887fd5e3c80 100644
--- a/libavdevice/avdevice.h
+++ b/libavdevice/avdevice.h
@@ -327,136 +327,6 @@ int avdevice_dev_to_app_control_message(struct AVFormatContext *s,
                                         enum AVDevToAppMessageType type,
                                         void *data, size_t data_size);
 
-#if FF_API_DEVICE_CAPABILITIES
-/**
- * Following API allows user to probe device capabilities (supported codecs,
- * pixel formats, sample formats, resolutions, channel counts, etc).
- * It is build on top op AVOption API.
- * Queried capabilities make it possible to set up converters of video or audio
- * parameters that fit to the device.
- *
- * List of capabilities that can be queried:
- *  - Capabilities valid for both audio and video devices:
- *    - codec:          supported audio/video codecs.
- *                      type: AV_OPT_TYPE_INT (AVCodecID value)
- *  - Capabilities valid for audio devices:
- *    - sample_format:  supported sample formats.
- *                      type: AV_OPT_TYPE_INT (AVSampleFormat value)
- *    - sample_rate:    supported sample rates.
- *                      type: AV_OPT_TYPE_INT
- *    - channels:       supported number of channels.
- *                      type: AV_OPT_TYPE_INT
- *    - channel_layout: supported channel layouts.
- *                      type: AV_OPT_TYPE_INT64
- *  - Capabilities valid for video devices:
- *    - pixel_format:   supported pixel formats.
- *                      type: AV_OPT_TYPE_INT (AVPixelFormat value)
- *    - window_size:    supported window sizes (describes size of the window size presented to the user).
- *                      type: AV_OPT_TYPE_IMAGE_SIZE
- *    - frame_size:     supported frame sizes (describes size of provided video frames).
- *                      type: AV_OPT_TYPE_IMAGE_SIZE
- *    - fps:            supported fps values
- *                      type: AV_OPT_TYPE_RATIONAL
- *
- * Value of the capability may be set by user using av_opt_set() function
- * and AVDeviceCapabilitiesQuery object. Following queries will
- * limit results to the values matching already set capabilities.
- * For example, setting a codec may impact number of formats or fps values
- * returned during next query. Setting invalid value may limit results to zero.
- *
- * Example of the usage basing on opengl output device:
- *
- * @code
- *  AVFormatContext *oc = NULL;
- *  AVDeviceCapabilitiesQuery *caps = NULL;
- *  AVOptionRanges *ranges;
- *  int ret;
- *
- *  if ((ret = avformat_alloc_output_context2(&oc, NULL, "opengl", NULL)) < 0)
- *      goto fail;
- *  if (avdevice_capabilities_create(&caps, oc, NULL) < 0)
- *      goto fail;
- *
- *  //query codecs
- *  if (av_opt_query_ranges(&ranges, caps, "codec", AV_OPT_MULTI_COMPONENT_RANGE)) < 0)
- *      goto fail;
- *  //pick codec here and set it
- *  av_opt_set(caps, "codec", AV_CODEC_ID_RAWVIDEO, 0);
- *
- *  //query format
- *  if (av_opt_query_ranges(&ranges, caps, "pixel_format", AV_OPT_MULTI_COMPONENT_RANGE)) < 0)
- *      goto fail;
- *  //pick format here and set it
- *  av_opt_set(caps, "pixel_format", AV_PIX_FMT_YUV420P, 0);
- *
- *  //query and set more capabilities
- *
- * fail:
- *  //clean up code
- *  avdevice_capabilities_free(&query, oc);
- *  avformat_free_context(oc);
- * @endcode
- */
-
-/**
- * Structure describes device capabilities.
- *
- * It is used by devices in conjunction with av_device_capabilities AVOption table
- * to implement capabilities probing API based on AVOption API. Should not be used directly.
- */
-typedef struct AVDeviceCapabilitiesQuery {
-    const AVClass *av_class;
-    AVFormatContext *device_context;
-    enum AVCodecID codec;
-    enum AVSampleFormat sample_format;
-    enum AVPixelFormat pixel_format;
-    int sample_rate;
-    int channels;
-    int64_t channel_layout;
-    int window_width;
-    int window_height;
-    int frame_width;
-    int frame_height;
-    AVRational fps;
-} AVDeviceCapabilitiesQuery;
-
-/**
- * AVOption table used by devices to implement device capabilities API. Should not be used by a user.
- */
-attribute_deprecated
-extern const AVOption av_device_capabilities[];
-
-/**
- * Initialize capabilities probing API based on AVOption API.
- *
- * avdevice_capabilities_free() must be called when query capabilities API is
- * not used anymore.
- *
- * @param[out] caps      Device capabilities data. Pointer to a NULL pointer must be passed.
- * @param s              Context of the device.
- * @param device_options An AVDictionary filled with device-private options.
- *                       On return this parameter will be destroyed and replaced with a dict
- *                       containing options that were not found. May be NULL.
- *                       The same options must be passed later to avformat_write_header() for output
- *                       devices or avformat_open_input() for input devices, or at any other place
- *                       that affects device-private options.
- *
- * @return >= 0 on success, negative otherwise.
- */
-attribute_deprecated
-int avdevice_capabilities_create(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s,
-                                 AVDictionary **device_options);
-
-/**
- * Free resources created by avdevice_capabilities_create()
- *
- * @param caps Device capabilities data to be freed.
- * @param s    Context of the device.
- */
-attribute_deprecated
-void avdevice_capabilities_free(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s);
-#endif
-
 /**
  * Structure describes basic parameters of the device.
  */
diff --git a/libavdevice/version_major.h b/libavdevice/version_major.h
index d255ff6992d..571257f31d7 100644
--- a/libavdevice/version_major.h
+++ b/libavdevice/version_major.h
@@ -32,6 +32,5 @@
  * dropped at a future version bump. The defines themselves are not part of
  * the public API and may change, break or disappear at any time.
  */
-#define FF_API_DEVICE_CAPABILITIES (LIBAVDEVICE_VERSION_MAJOR < 60)
 
 #endif /* AVDEVICE_VERSION_MAJOR_H */
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 25/33] avutil: remove FF_API_D2STR

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavutil/avstring.c       | 10 ----------
 libavutil/avstring.h       |  9 ---------
 libavutil/tests/avstring.c | 16 ----------------
 libavutil/version.h        |  1 -
 4 files changed, 36 deletions(-)

diff --git a/libavutil/avstring.c b/libavutil/avstring.c
index 5ddbe9219e8..e460b5be7f3 100644
--- a/libavutil/avstring.c
+++ b/libavutil/avstring.c
@@ -139,16 +139,6 @@ end:
     return p;
 }
 
-#if FF_API_D2STR
-char *av_d2str(double d)
-{
-    char *str = av_malloc(16);
-    if (str)
-        snprintf(str, 16, "%f", d);
-    return str;
-}
-#endif
-
 #define WHITESPACES " \n\t\r"
 
 char *av_get_token(const char **buf, const char *term)
diff --git a/libavutil/avstring.h b/libavutil/avstring.h
index 74aa4cd0e4e..e2602637630 100644
--- a/libavutil/avstring.h
+++ b/libavutil/avstring.h
@@ -157,15 +157,6 @@ static inline size_t av_strnlen(const char *s, size_t len)
  */
 char *av_asprintf(const char *fmt, ...) av_printf_format(1, 2);
 
-#if FF_API_D2STR
-/**
- * Convert a number to an av_malloced string.
- * @deprecated  use av_asprintf() with "%f" or a more specific format
- */
-attribute_deprecated
-char *av_d2str(double d);
-#endif
-
 /**
  * Unescape the given string until a non escaped terminating char,
  * and return the token corresponding to the unescaped string.
diff --git a/libavutil/tests/avstring.c b/libavutil/tests/avstring.c
index 37a2cf18334..bc0bde358d5 100644
--- a/libavutil/tests/avstring.c
+++ b/libavutil/tests/avstring.c
@@ -109,21 +109,5 @@ int main(void)
     TEST_STRIREPLACE(haystack, needle [2], "Education consists mainly in what we have instead.");
     TEST_STRIREPLACE(haystack, needle [1], "Education consists mainly in what we have instead");
 
-#if FF_API_D2STR
-FF_DISABLE_DEPRECATION_WARNINGS
-    /*Testing av_d2str()*/
-    #define TEST_D2STR(value, expected) \
-        if((ptr = av_d2str(value)) == NULL){ \
-            printf("error, received null pointer!\n"); \
-        } else { \
-            if(strcmp(ptr, expected) != 0) \
-                printf( "expected: %s, received: %s\n", expected, ptr); \
-            av_free(ptr); \
-        }
-    TEST_D2STR(0         ,  "0.000000");
-    TEST_D2STR(-1.2333234, "-1.233323");
-    TEST_D2STR(-1.2333237, "-1.233324");
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
     return 0;
 }
diff --git a/libavutil/version.h b/libavutil/version.h
index 60f96af5df8..38769962cc3 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -105,7 +105,6 @@
  * @{
  */
 
-#define FF_API_D2STR                    (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_DECLARE_ALIGNED          (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_COLORSPACE_NAME          (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_AV_MALLOCZ_ARRAY         (LIBAVUTIL_VERSION_MAJOR < 58)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 26/33] avutil: remove FF_API_DECLARE_ALIGNED

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/qdmc.c        |  1 +
 libavutil/mem.h          | 80 ----------------------------------------
 libavutil/mem_internal.h |  2 -
 libavutil/version.h      |  1 -
 4 files changed, 1 insertion(+), 83 deletions(-)

diff --git a/libavcodec/qdmc.c b/libavcodec/qdmc.c
index 4b582dc3491..081c4dd46f0 100644
--- a/libavcodec/qdmc.c
+++ b/libavcodec/qdmc.c
@@ -25,6 +25,7 @@
 #define BITSTREAM_READER_LE
 
 #include "libavutil/channel_layout.h"
+#include "libavutil/mem_internal.h"
 #include "libavutil/thread.h"
 #include "libavutil/tx.h"
 
diff --git a/libavutil/mem.h b/libavutil/mem.h
index c9c4fcf1ff0..b093b3b5cb0 100644
--- a/libavutil/mem.h
+++ b/libavutil/mem.h
@@ -51,86 +51,6 @@
  * @{
  */
 
-#if FF_API_DECLARE_ALIGNED
-/**
- *
- * @defgroup lavu_mem_macros Alignment Macros
- * Helper macros for declaring aligned variables.
- * @{
- */
-
-/**
- * @def DECLARE_ALIGNED(n,t,v)
- * Declare a variable that is aligned in memory.
- *
- * @code{.c}
- * DECLARE_ALIGNED(16, uint16_t, aligned_int) = 42;
- * DECLARE_ALIGNED(32, uint8_t, aligned_array)[128];
- *
- * // The default-alignment equivalent would be
- * uint16_t aligned_int = 42;
- * uint8_t aligned_array[128];
- * @endcode
- *
- * @param n Minimum alignment in bytes
- * @param t Type of the variable (or array element)
- * @param v Name of the variable
- */
-
-/**
- * @def DECLARE_ASM_ALIGNED(n,t,v)
- * Declare an aligned variable appropriate for use in inline assembly code.
- *
- * @code{.c}
- * DECLARE_ASM_ALIGNED(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008);
- * @endcode
- *
- * @param n Minimum alignment in bytes
- * @param t Type of the variable (or array element)
- * @param v Name of the variable
- */
-
-/**
- * @def DECLARE_ASM_CONST(n,t,v)
- * Declare a static constant aligned variable appropriate for use in inline
- * assembly code.
- *
- * @code{.c}
- * DECLARE_ASM_CONST(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008);
- * @endcode
- *
- * @param n Minimum alignment in bytes
- * @param t Type of the variable (or array element)
- * @param v Name of the variable
- */
-
-#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C)
-    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
-    #define DECLARE_ASM_ALIGNED(n,t,v)  t __attribute__ ((aligned (n))) v
-    #define DECLARE_ASM_CONST(n,t,v)    const t __attribute__ ((aligned (n))) v
-#elif defined(__DJGPP__)
-    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (FFMIN(n, 16)))) v
-    #define DECLARE_ASM_ALIGNED(n,t,v)  t av_used __attribute__ ((aligned (FFMIN(n, 16)))) v
-    #define DECLARE_ASM_CONST(n,t,v)    static const t av_used __attribute__ ((aligned (FFMIN(n, 16)))) v
-#elif defined(__GNUC__) || defined(__clang__)
-    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
-    #define DECLARE_ASM_ALIGNED(n,t,v)  t av_used __attribute__ ((aligned (n))) v
-    #define DECLARE_ASM_CONST(n,t,v)    static const t av_used __attribute__ ((aligned (n))) v
-#elif defined(_MSC_VER)
-    #define DECLARE_ALIGNED(n,t,v)      __declspec(align(n)) t v
-    #define DECLARE_ASM_ALIGNED(n,t,v)  __declspec(align(n)) t v
-    #define DECLARE_ASM_CONST(n,t,v)    __declspec(align(n)) static const t v
-#else
-    #define DECLARE_ALIGNED(n,t,v)      t v
-    #define DECLARE_ASM_ALIGNED(n,t,v)  t v
-    #define DECLARE_ASM_CONST(n,t,v)    static const t v
-#endif
-
-/**
- * @}
- */
-#endif
-
 /**
  * @defgroup lavu_mem_attrs Function Attributes
  * Function attributes applicable to memory handling functions.
diff --git a/libavutil/mem_internal.h b/libavutil/mem_internal.h
index 955e31a6981..2448c606f19 100644
--- a/libavutil/mem_internal.h
+++ b/libavutil/mem_internal.h
@@ -30,7 +30,6 @@
 #include "mem.h"
 #include "version.h"
 
-#if !FF_API_DECLARE_ALIGNED
 /**
  * @def DECLARE_ALIGNED(n,t,v)
  * Declare a variable that is aligned in memory.
@@ -97,7 +96,6 @@
     #define DECLARE_ASM_ALIGNED(n,t,v)  t v
     #define DECLARE_ASM_CONST(n,t,v)    static const t v
 #endif
-#endif
 
 // Some broken preprocessors need a second expansion
 // to be forced to tokenize __VA_ARGS__
diff --git a/libavutil/version.h b/libavutil/version.h
index 38769962cc3..6014743947c 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -105,7 +105,6 @@
  * @{
  */
 
-#define FF_API_DECLARE_ALIGNED          (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_COLORSPACE_NAME          (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_AV_MALLOCZ_ARRAY         (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_FIFO_PEEK2               (LIBAVUTIL_VERSION_MAJOR < 58)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 27/33] avutil: remove FF_API_COLORSPACE_NAME

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavutil/frame.c   | 17 -----------------
 libavutil/frame.h   |  9 ---------
 libavutil/version.h |  1 -
 3 files changed, 27 deletions(-)

diff --git a/libavutil/frame.c b/libavutil/frame.c
index fa9b11aa543..3198a50f67f 100644
--- a/libavutil/frame.c
+++ b/libavutil/frame.c
@@ -35,23 +35,6 @@
                av_get_channel_layout_nb_channels((frame)->channel_layout))
 #endif
 
-#if FF_API_COLORSPACE_NAME
-const char *av_get_colorspace_name(enum AVColorSpace val)
-{
-    static const char * const name[] = {
-        [AVCOL_SPC_RGB]       = "GBR",
-        [AVCOL_SPC_BT709]     = "bt709",
-        [AVCOL_SPC_FCC]       = "fcc",
-        [AVCOL_SPC_BT470BG]   = "bt470bg",
-        [AVCOL_SPC_SMPTE170M] = "smpte170m",
-        [AVCOL_SPC_SMPTE240M] = "smpte240m",
-        [AVCOL_SPC_YCOCG]     = "YCgCo",
-    };
-    if ((unsigned)val >= FF_ARRAY_ELEMS(name))
-        return NULL;
-    return name[val];
-}
-#endif
 static void get_frame_defaults(AVFrame *frame)
 {
     memset(frame, 0, sizeof(*frame));
diff --git a/libavutil/frame.h b/libavutil/frame.h
index bbe909ee2da..1172d013a3d 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -720,15 +720,6 @@ typedef struct AVFrame {
 } AVFrame;
 
 
-#if FF_API_COLORSPACE_NAME
-/**
- * Get the name of a colorspace.
- * @return a static string identifying the colorspace; can be NULL.
- * @deprecated use av_color_space_name()
- */
-attribute_deprecated
-const char *av_get_colorspace_name(enum AVColorSpace val);
-#endif
 /**
  * Allocate an AVFrame and set its fields to default values.  The resulting
  * struct must be freed using av_frame_free().
diff --git a/libavutil/version.h b/libavutil/version.h
index 6014743947c..700af5d8749 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -105,7 +105,6 @@
  * @{
  */
 
-#define FF_API_COLORSPACE_NAME          (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_AV_MALLOCZ_ARRAY         (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_FIFO_PEEK2               (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_FIFO_OLD_API             (LIBAVUTIL_VERSION_MAJOR < 58)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 28/33] avutil: remove FF_API_AV_MALLOCZ_ARRAY

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavutil/mem.c     | 10 ----------
 libavutil/mem.h     |  8 --------
 libavutil/version.h |  1 -
 3 files changed, 19 deletions(-)

diff --git a/libavutil/mem.c b/libavutil/mem.c
index 18aff5291f0..36b8940a0cf 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -212,16 +212,6 @@ void *av_malloc_array(size_t nmemb, size_t size)
     return av_malloc(result);
 }
 
-#if FF_API_AV_MALLOCZ_ARRAY
-void *av_mallocz_array(size_t nmemb, size_t size)
-{
-    size_t result;
-    if (size_mult(nmemb, size, &result) < 0)
-        return NULL;
-    return av_mallocz(result);
-}
-#endif
-
 void *av_realloc_array(void *ptr, size_t nmemb, size_t size)
 {
     size_t result;
diff --git a/libavutil/mem.h b/libavutil/mem.h
index b093b3b5cb0..62b4ca6e50e 100644
--- a/libavutil/mem.h
+++ b/libavutil/mem.h
@@ -159,14 +159,6 @@ av_alloc_size(1, 2) void *av_malloc_array(size_t nmemb, size_t size);
  */
 void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib av_alloc_size(1, 2);
 
-#if FF_API_AV_MALLOCZ_ARRAY
-/**
- * @deprecated use av_calloc()
- */
-attribute_deprecated
-void *av_mallocz_array(size_t nmemb, size_t size) av_malloc_attrib av_alloc_size(1, 2);
-#endif
-
 /**
  * Allocate, reallocate, or free a block of memory.
  *
diff --git a/libavutil/version.h b/libavutil/version.h
index 700af5d8749..3bad472227a 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -105,7 +105,6 @@
  * @{
  */
 
-#define FF_API_AV_MALLOCZ_ARRAY         (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_FIFO_PEEK2               (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_FIFO_OLD_API             (LIBAVUTIL_VERSION_MAJOR < 58)
 #define FF_API_XVMC                     (LIBAVUTIL_VERSION_MAJOR < 58)
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 29/33] avutil/{color_utils, csp}: merge color_utils into csp and expose API

[Anton Khirnov]

From: Leo Izen <leo.izen@gmail.com>

libavutil/color_utils contains some avpriv_ symbols that map
enum AVTransferCharacteristic values to gamma-curve approximations and
to the actual transfer functions to invert them (i.e. -> linear).

There's two issues with this:
(1) avpriv is evil and should be avoided whenever possible
(2) libavutil/csp.h exposes a public API for handling color that
    already handles primaries and matricies

I don't see any reason this API has to be private, so this commit takes
the functionality from avutil/color_utils and merges it into avutil/csp
with an exposed av_ API rather than the previous avpriv_ API.

Every reference to the previous API has been updated to point to the
new one. color_utils.h has been deleted as well. This should not break
any applications as it only contained avpriv_ symbols in the first
place, so nothing in that header could be referenced by other
applications.

Signed-off-by: Leo Izen <leo.izen@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
 doc/APIchanges                |   4 +
 libavcodec/exr.c              |   8 +-
 libavcodec/fflcms2.c          |   1 -
 libavcodec/pngenc.c           |   3 +-
 libavformat/movenc.c          |   7 +-
 libavutil/Makefile            |   1 -
 libavutil/color_utils.c       | 234 ----------------------------------
 libavutil/color_utils.h       |  56 --------
 libavutil/csp.c               | 172 +++++++++++++++++++++++++
 libavutil/csp.h               |  39 ++++++
 libavutil/tests/color_utils.c |   4 +-
 11 files changed, 225 insertions(+), 304 deletions(-)
 delete mode 100644 libavutil/color_utils.c
 delete mode 100644 libavutil/color_utils.h

diff --git a/doc/APIchanges b/doc/APIchanges
index b1181ec60a3..385385bda8d 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -14,6 +14,10 @@ libavutil:     2021-04-27
 
 API changes, most recent first:
 
+2023-02-xx - xxxxxxxxxx - lavu 58.0.100 - csp.h
+  Add av_csp_approximate_trc_gamma() and av_csp_trc_func_from_id().
+  Add av_csp_trc_function.
+
 2023-02-xx - xxxxxxxxxx - lavc 60.0.100 - avcodec.h
   avcodec_decode_subtitle2() now accepts const AVPacket*.
 
diff --git a/libavcodec/exr.c b/libavcodec/exr.c
index 6a0af96ce4f..2f1766c17bf 100644
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@@ -36,11 +36,11 @@
 
 #include "libavutil/avassert.h"
 #include "libavutil/common.h"
+#include "libavutil/csp.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/intfloat.h"
 #include "libavutil/avstring.h"
 #include "libavutil/opt.h"
-#include "libavutil/color_utils.h"
 #include "libavutil/half2float.h"
 
 #include "avcodec.h"
@@ -1189,7 +1189,7 @@ static int decode_block(AVCodecContext *avctx, void *tdata,
     int i, x, buf_size = s->buf_size;
     int c, rgb_channel_count;
     float one_gamma = 1.0f / s->gamma;
-    avpriv_trc_function trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
+    av_csp_trc_function trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
     int ret;
 
     line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
@@ -2215,7 +2215,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     uint32_t i;
     union av_intfloat32 t;
     float one_gamma = 1.0f / s->gamma;
-    avpriv_trc_function trc_func = NULL;
+    av_csp_trc_function trc_func = NULL;
 
     ff_init_half2float_tables(&s->h2f_tables);
 
@@ -2227,7 +2227,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     ff_bswapdsp_init(&s->bbdsp);
 #endif
 
-    trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
+    trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
     if (trc_func) {
         for (i = 0; i < 65536; ++i) {
             t.i = half2float(i, &s->h2f_tables);
diff --git a/libavcodec/fflcms2.c b/libavcodec/fflcms2.c
index fd370fb310f..5443f178bc9 100644
--- a/libavcodec/fflcms2.c
+++ b/libavcodec/fflcms2.c
@@ -17,7 +17,6 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "libavutil/color_utils.h"
 #include "libavutil/csp.h"
 
 #include "fflcms2.h"
diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index 2393161c3b9..ac27eebf3a7 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -29,7 +29,6 @@
 #include "zlib_wrapper.h"
 
 #include "libavutil/avassert.h"
-#include "libavutil/color_utils.h"
 #include "libavutil/crc.h"
 #include "libavutil/csp.h"
 #include "libavutil/libm.h"
@@ -317,7 +316,7 @@ static int png_get_chrm(enum AVColorPrimaries prim,  uint8_t *buf)
 
 static int png_get_gama(enum AVColorTransferCharacteristic trc, uint8_t *buf)
 {
-    double gamma = avpriv_get_gamma_from_trc(trc);
+    double gamma = av_csp_approximate_trc_gamma(trc);
     if (gamma <= 1e-6)
         return 0;
 
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 87ee7a921f0..aca8b9d5853 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -47,6 +47,7 @@
 #include "internal.h"
 #include "libavutil/avstring.h"
 #include "libavutil/channel_layout.h"
+#include "libavutil/csp.h"
 #include "libavutil/intfloat.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/libm.h"
@@ -56,7 +57,6 @@
 #include "libavutil/stereo3d.h"
 #include "libavutil/timecode.h"
 #include "libavutil/dovi_meta.h"
-#include "libavutil/color_utils.h"
 #include "libavutil/uuid.h"
 #include "hevc.h"
 #include "rtpenc.h"
@@ -2011,9 +2011,8 @@ static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
 static int mov_write_gama_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track, double gamma)
 {
     uint32_t gama = 0;
-    if (gamma <= 0.0) {
-        gamma = avpriv_get_gamma_from_trc(track->par->color_trc);
-    }
+    if (gamma <= 0.0)
+        gamma = av_csp_approximate_trc_gamma(track->par->color_trc);
     av_log(s, AV_LOG_DEBUG, "gamma value %g\n", gamma);
 
     if (gamma > 1e-6) {
diff --git a/libavutil/Makefile b/libavutil/Makefile
index 29b06665f50..dc9012f9a83 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -114,7 +114,6 @@ OBJS = adler32.o                                                        \
        cast5.o                                                          \
        camellia.o                                                       \
        channel_layout.o                                                 \
-       color_utils.o                                                    \
        cpu.o                                                            \
        crc.o                                                            \
        csp.o                                                            \
diff --git a/libavutil/color_utils.c b/libavutil/color_utils.c
deleted file mode 100644
index 5e221fb7983..00000000000
--- a/libavutil/color_utils.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stddef.h>
-#include <math.h>
-
-#include "libavutil/color_utils.h"
-#include "libavutil/pixfmt.h"
-
-double avpriv_get_gamma_from_trc(enum AVColorTransferCharacteristic trc)
-{
-    double gamma;
-    switch (trc) {
-        case AVCOL_TRC_BT709:
-        case AVCOL_TRC_SMPTE170M:
-        case AVCOL_TRC_SMPTE240M:
-        case AVCOL_TRC_BT1361_ECG:
-        case AVCOL_TRC_BT2020_10:
-        case AVCOL_TRC_BT2020_12:
-            /* these share a segmented TRC, but gamma 1.961 is a close
-              approximation, and also more correct for decoding content */
-            gamma = 1.961;
-            break;
-        case AVCOL_TRC_GAMMA22:
-        case AVCOL_TRC_IEC61966_2_1:
-            gamma = 2.2;
-            break;
-        case AVCOL_TRC_GAMMA28:
-            gamma = 2.8;
-            break;
-        case AVCOL_TRC_LINEAR:
-            gamma = 1.0;
-            break;
-        default:
-            gamma = 0.0; // Unknown value representation
-    }
-    return gamma;
-}
-
-#define BT709_alpha 1.099296826809442
-#define BT709_beta 0.018053968510807
-
-static double avpriv_trc_bt709(double Lc)
-{
-    const double a = BT709_alpha;
-    const double b = BT709_beta;
-
-    return (0.0 > Lc) ? 0.0
-         : (  b > Lc) ? 4.500 * Lc
-         :              a * pow(Lc, 0.45) - (a - 1.0);
-}
-
-static double avpriv_trc_gamma22(double Lc)
-{
-    return (0.0 > Lc) ? 0.0 : pow(Lc, 1.0/ 2.2);
-}
-
-static double avpriv_trc_gamma28(double Lc)
-{
-    return (0.0 > Lc) ? 0.0 : pow(Lc, 1.0/ 2.8);
-}
-
-static double avpriv_trc_smpte240M(double Lc)
-{
-    const double a = 1.1115;
-    const double b = 0.0228;
-
-    return (0.0 > Lc) ? 0.0
-         : (  b > Lc) ? 4.000 * Lc
-         :              a * pow(Lc, 0.45) - (a - 1.0);
-}
-
-static double avpriv_trc_linear(double Lc)
-{
-    return Lc;
-}
-
-static double avpriv_trc_log(double Lc)
-{
-    return (0.01 > Lc) ? 0.0 : 1.0 + log10(Lc) / 2.0;
-}
-
-static double avpriv_trc_log_sqrt(double Lc)
-{
-    // sqrt(10) / 1000
-    return (0.00316227766 > Lc) ? 0.0 : 1.0 + log10(Lc) / 2.5;
-}
-
-static double avpriv_trc_iec61966_2_4(double Lc)
-{
-    const double a = BT709_alpha;
-    const double b = BT709_beta;
-
-    return (-b >= Lc) ? -a * pow(-Lc, 0.45) + (a - 1.0)
-         : ( b >  Lc) ? 4.500 * Lc
-         :               a * pow( Lc, 0.45) - (a - 1.0);
-}
-
-static double avpriv_trc_bt1361(double Lc)
-{
-    const double a = BT709_alpha;
-    const double b = BT709_beta;
-
-    return (-0.0045 >= Lc) ? -(a * pow(-4.0 * Lc, 0.45) + (a - 1.0)) / 4.0
-         : ( b >  Lc) ? 4.500 * Lc
-         :               a * pow( Lc, 0.45) - (a - 1.0);
-}
-
-static double avpriv_trc_iec61966_2_1(double Lc)
-{
-    const double a = 1.055;
-    const double b = 0.0031308;
-
-    return (0.0 > Lc) ? 0.0
-         : (  b > Lc) ? 12.92 * Lc
-         :              a * pow(Lc, 1.0  / 2.4) - (a - 1.0);
-}
-
-static double avpriv_trc_smpte_st2084(double Lc)
-{
-    const double c1 =         3424.0 / 4096.0; // c3-c2 + 1
-    const double c2 =  32.0 * 2413.0 / 4096.0;
-    const double c3 =  32.0 * 2392.0 / 4096.0;
-    const double m  = 128.0 * 2523.0 / 4096.0;
-    const double n  =  0.25 * 2610.0 / 4096.0;
-    const double L  = Lc / 10000.0;
-    const double Ln = pow(L, n);
-
-    return (0.0 > Lc) ? 0.0
-         :              pow((c1 + c2 * Ln) / (1.0 + c3 * Ln), m);
-
-}
-
-static double avpriv_trc_smpte_st428_1(double Lc)
-{
-    return (0.0 > Lc) ? 0.0
-         :              pow(48.0 * Lc / 52.37, 1.0 / 2.6);
-}
-
-
-static double avpriv_trc_arib_std_b67(double Lc) {
-    // The function uses the definition from HEVC, which assumes that the peak
-    // white is input level = 1. (this is equivalent to scaling E = Lc * 12 and
-    // using the definition from the ARIB STD-B67 spec)
-    const double a = 0.17883277;
-    const double b = 0.28466892;
-    const double c = 0.55991073;
-    return (0.0 > Lc) ? 0.0 :
-        (Lc <= 1.0 / 12.0 ? sqrt(3.0 * Lc) : a * log(12.0 * Lc - b) + c);
-}
-
-avpriv_trc_function avpriv_get_trc_function_from_trc(enum AVColorTransferCharacteristic trc)
-{
-    avpriv_trc_function func = NULL;
-    switch (trc) {
-        case AVCOL_TRC_BT709:
-        case AVCOL_TRC_SMPTE170M:
-        case AVCOL_TRC_BT2020_10:
-        case AVCOL_TRC_BT2020_12:
-            func = avpriv_trc_bt709;
-            break;
-
-        case AVCOL_TRC_GAMMA22:
-            func = avpriv_trc_gamma22;
-            break;
-        case AVCOL_TRC_GAMMA28:
-            func = avpriv_trc_gamma28;
-            break;
-
-        case AVCOL_TRC_SMPTE240M:
-            func = avpriv_trc_smpte240M;
-            break;
-
-        case AVCOL_TRC_LINEAR:
-            func = avpriv_trc_linear;
-            break;
-
-        case AVCOL_TRC_LOG:
-            func = avpriv_trc_log;
-            break;
-
-        case AVCOL_TRC_LOG_SQRT:
-            func = avpriv_trc_log_sqrt;
-            break;
-
-        case AVCOL_TRC_IEC61966_2_4:
-            func = avpriv_trc_iec61966_2_4;
-            break;
-
-        case AVCOL_TRC_BT1361_ECG:
-            func = avpriv_trc_bt1361;
-            break;
-
-        case AVCOL_TRC_IEC61966_2_1:
-            func = avpriv_trc_iec61966_2_1;
-            break;
-
-        case AVCOL_TRC_SMPTEST2084:
-            func = avpriv_trc_smpte_st2084;
-            break;
-
-        case AVCOL_TRC_SMPTEST428_1:
-            func = avpriv_trc_smpte_st428_1;
-            break;
-
-        case AVCOL_TRC_ARIB_STD_B67:
-            func = avpriv_trc_arib_std_b67;
-            break;
-
-        case AVCOL_TRC_RESERVED0:
-        case AVCOL_TRC_UNSPECIFIED:
-        case AVCOL_TRC_RESERVED:
-        default:
-            break;
-    }
-    return func;
-}
diff --git a/libavutil/color_utils.h b/libavutil/color_utils.h
deleted file mode 100644
index 9529006452c..00000000000
--- a/libavutil/color_utils.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVUTIL_COLOR_UTILS_H
-#define AVUTIL_COLOR_UTILS_H
-
-
-#include "libavutil/pixfmt.h"
-
-/**
- * Determine a suitable 'gamma' value to match the supplied
- * AVColorTransferCharacteristic.
- *
- * See Apple Technical Note TN2257 (https://developer.apple.com/library/mac/technotes/tn2257/_index.html)
- *
- * @return Will return an approximation to the simple gamma function matching
- *         the supplied Transfer Characteristic, Will return 0.0 for any
- *         we cannot reasonably match against.
- */
-double avpriv_get_gamma_from_trc(enum AVColorTransferCharacteristic trc);
-
-
-typedef double (*avpriv_trc_function)(double);
-
-/**
- * Determine the function needed to apply the given
- * AVColorTransferCharacteristic to linear input.
- *
- * The function returned should expect a nominal domain and range of [0.0-1.0]
- * values outside of this range maybe valid depending on the chosen
- * characteristic function.
- *
- * @return Will return pointer to the function matching the
- *         supplied Transfer Characteristic. If unspecified will
- *         return NULL:
- */
-avpriv_trc_function avpriv_get_trc_function_from_trc(enum AVColorTransferCharacteristic trc);
-
-#endif
diff --git a/libavutil/csp.c b/libavutil/csp.c
index 98fc83c1da0..7ef822c60bc 100644
--- a/libavutil/csp.c
+++ b/libavutil/csp.c
@@ -1,5 +1,8 @@
 /*
+ * Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
  * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
+ * Copyright (c) 2023 Leo Izen <leo.izen@gmail.com>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -21,9 +24,11 @@
  * @file Colorspace functions for libavutil
  * @author Ronald S. Bultje <rsbultje@gmail.com>
  * @author Leo Izen <leo.izen@gmail.com>
+ * @author Kevin Wheatley <kevin.j.wheatley@gmail.com>
  */
 
 #include <stdlib.h>
+#include <math.h>
 
 #include "attributes.h"
 #include "csp.h"
@@ -126,3 +131,170 @@ enum AVColorPrimaries av_csp_primaries_id_from_desc(const AVColorPrimariesDesc *
 
     return AVCOL_PRI_UNSPECIFIED;
 }
+
+static const double approximate_gamma[AVCOL_TRC_NB] = {
+    [AVCOL_TRC_BT709] = 1.961,
+    [AVCOL_TRC_SMPTE170M] = 1.961,
+    [AVCOL_TRC_SMPTE240M] = 1.961,
+    [AVCOL_TRC_BT1361_ECG] = 1.961,
+    [AVCOL_TRC_BT2020_10] = 1.961,
+    [AVCOL_TRC_BT2020_12] = 1.961,
+    [AVCOL_TRC_GAMMA22] = 2.2,
+    [AVCOL_TRC_IEC61966_2_1] = 2.2,
+    [AVCOL_TRC_GAMMA28] = 2.8,
+    [AVCOL_TRC_LINEAR] = 1.0,
+    [AVCOL_TRC_SMPTE428] = 2.6,
+};
+
+double av_csp_approximate_trc_gamma(enum AVColorTransferCharacteristic trc)
+{
+    double gamma;
+    if (trc >= AVCOL_TRC_NB)
+        return 0.0;
+    gamma = approximate_gamma[trc];
+    if (gamma > 0)
+        return gamma;
+    return 0.0;
+}
+
+#define BT709_alpha 1.099296826809442
+#define BT709_beta 0.018053968510807
+
+static double trc_bt709(double Lc)
+{
+    const double a = BT709_alpha;
+    const double b = BT709_beta;
+
+    return (0.0 > Lc) ? 0.0
+         : (  b > Lc) ? 4.500 * Lc
+         :              a * pow(Lc, 0.45) - (a - 1.0);
+}
+
+static double trc_gamma22(double Lc)
+{
+    return (0.0 > Lc) ? 0.0 : pow(Lc, 1.0/ 2.2);
+}
+
+static double trc_gamma28(double Lc)
+{
+    return (0.0 > Lc) ? 0.0 : pow(Lc, 1.0/ 2.8);
+}
+
+static double trc_smpte240M(double Lc)
+{
+    const double a = 1.1115;
+    const double b = 0.0228;
+
+    return (0.0 > Lc) ? 0.0
+         : (  b > Lc) ? 4.000 * Lc
+         :              a * pow(Lc, 0.45) - (a - 1.0);
+}
+
+static double trc_linear(double Lc)
+{
+    return Lc;
+}
+
+static double trc_log(double Lc)
+{
+    return (0.01 > Lc) ? 0.0 : 1.0 + log10(Lc) / 2.0;
+}
+
+static double trc_log_sqrt(double Lc)
+{
+    // sqrt(10) / 1000
+    return (0.00316227766 > Lc) ? 0.0 : 1.0 + log10(Lc) / 2.5;
+}
+
+static double trc_iec61966_2_4(double Lc)
+{
+    const double a = BT709_alpha;
+    const double b = BT709_beta;
+
+    return (-b >= Lc) ? -a * pow(-Lc, 0.45) + (a - 1.0)
+         : ( b >  Lc) ? 4.500 * Lc
+         :               a * pow( Lc, 0.45) - (a - 1.0);
+}
+
+static double trc_bt1361(double Lc)
+{
+    const double a = BT709_alpha;
+    const double b = BT709_beta;
+
+    return (-0.0045 >= Lc) ? -(a * pow(-4.0 * Lc, 0.45) + (a - 1.0)) / 4.0
+         : ( b >  Lc) ? 4.500 * Lc
+         :               a * pow( Lc, 0.45) - (a - 1.0);
+}
+
+static double trc_iec61966_2_1(double Lc)
+{
+    const double a = 1.055;
+    const double b = 0.0031308;
+
+    return (0.0 > Lc) ? 0.0
+         : (  b > Lc) ? 12.92 * Lc
+         :              a * pow(Lc, 1.0  / 2.4) - (a - 1.0);
+}
+
+static double trc_smpte_st2084(double Lc)
+{
+    const double c1 =         3424.0 / 4096.0; // c3-c2 + 1
+    const double c2 =  32.0 * 2413.0 / 4096.0;
+    const double c3 =  32.0 * 2392.0 / 4096.0;
+    const double m  = 128.0 * 2523.0 / 4096.0;
+    const double n  =  0.25 * 2610.0 / 4096.0;
+    const double L  = Lc / 10000.0;
+    const double Ln = pow(L, n);
+
+    return (0.0 > Lc) ? 0.0
+         :              pow((c1 + c2 * Ln) / (1.0 + c3 * Ln), m);
+
+}
+
+static double trc_smpte_st428_1(double Lc)
+{
+    return (0.0 > Lc) ? 0.0
+         :              pow(48.0 * Lc / 52.37, 1.0 / 2.6);
+}
+
+
+static double trc_arib_std_b67(double Lc) {
+    // The function uses the definition from HEVC, which assumes that the peak
+    // white is input level = 1. (this is equivalent to scaling E = Lc * 12 and
+    // using the definition from the ARIB STD-B67 spec)
+    const double a = 0.17883277;
+    const double b = 0.28466892;
+    const double c = 0.55991073;
+    return (0.0 > Lc) ? 0.0 :
+        (Lc <= 1.0 / 12.0 ? sqrt(3.0 * Lc) : a * log(12.0 * Lc - b) + c);
+}
+
+static const av_csp_trc_function trc_funcs[AVCOL_TRC_NB] = {
+    [AVCOL_TRC_BT709] = trc_bt709,
+    [AVCOL_TRC_GAMMA22] = trc_gamma22,
+    [AVCOL_TRC_GAMMA28] = trc_gamma28,
+    [AVCOL_TRC_SMPTE170M] = trc_bt709,
+    [AVCOL_TRC_SMPTE240M] = trc_smpte240M,
+    [AVCOL_TRC_LINEAR] = trc_linear,
+    [AVCOL_TRC_LOG] = trc_log,
+    [AVCOL_TRC_LOG_SQRT] = trc_log_sqrt,
+    [AVCOL_TRC_IEC61966_2_4] = trc_iec61966_2_4,
+    [AVCOL_TRC_BT1361_ECG] = trc_bt1361,
+    [AVCOL_TRC_IEC61966_2_1] = trc_iec61966_2_1,
+    [AVCOL_TRC_BT2020_10] = trc_bt709,
+    [AVCOL_TRC_BT2020_12] = trc_bt709,
+    [AVCOL_TRC_SMPTE2084] = trc_smpte_st2084,
+    [AVCOL_TRC_SMPTE428] = trc_smpte_st428_1,
+    [AVCOL_TRC_ARIB_STD_B67] = trc_arib_std_b67,
+};
+
+av_csp_trc_function av_csp_trc_func_from_id(enum AVColorTransferCharacteristic trc)
+{
+    av_csp_trc_function func;
+    if (trc >= AVCOL_TRC_NB)
+        return NULL;
+    func = trc_funcs[trc];
+    if (!func)
+        return NULL;
+    return func;
+}
diff --git a/libavutil/csp.h b/libavutil/csp.h
index 18ef208adf3..73bce52bc0c 100644
--- a/libavutil/csp.h
+++ b/libavutil/csp.h
@@ -1,5 +1,8 @@
 /*
+ * Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
  * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
+ * Copyright (c) 2023 Leo Izen <leo.izen@gmail.com>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -29,6 +32,7 @@
  * @ingroup lavu_math_csp
  * @author Ronald S. Bultje <rsbultje@gmail.com>
  * @author Leo Izen <leo.izen@gmail.com>
+ * @author Kevin Wheatley <kevin.j.wheatley@gmail.com>
  */
 
 /**
@@ -76,6 +80,12 @@ typedef struct AVColorPrimariesDesc {
     AVPrimaryCoefficients prim;
 } AVColorPrimariesDesc;
 
+/**
+ * Function pointer representing a double -> double transfer function that performs
+ * an EOTF transfer inversion. This function outputs linear light.
+ */
+typedef double (*av_csp_trc_function)(double);
+
 /**
  * Retrieves the Luma coefficients necessary to construct a conversion matrix
  * from an enum constant describing the colorspace.
@@ -104,6 +114,35 @@ const AVColorPrimariesDesc *av_csp_primaries_desc_from_id(enum AVColorPrimaries
  */
 enum AVColorPrimaries av_csp_primaries_id_from_desc(const AVColorPrimariesDesc *prm);
 
+/**
+ * Determine a suitable 'gamma' value to match the supplied
+ * AVColorTransferCharacteristic.
+ *
+ * See Apple Technical Note TN2257 (https://developer.apple.com/library/mac/technotes/tn2257/_index.html)
+ *
+ * This function returns the gamma exponent for the OETF. For example, sRGB is approximated
+ * by gamma 2.2, not by gamma 0.45455.
+ *
+ * @return Will return an approximation to the simple gamma function matching
+ *         the supplied Transfer Characteristic, Will return 0.0 for any
+ *         we cannot reasonably match against.
+ */
+double av_csp_approximate_trc_gamma(enum AVColorTransferCharacteristic trc);
+
+/**
+ * Determine the function needed to apply the given
+ * AVColorTransferCharacteristic to linear input.
+ *
+ * The function returned should expect a nominal domain and range of [0.0-1.0]
+ * values outside of this range maybe valid depending on the chosen
+ * characteristic function.
+ *
+ * @return Will return pointer to the function matching the
+ *         supplied Transfer Characteristic. If unspecified will
+ *         return NULL:
+ */
+av_csp_trc_function av_csp_trc_func_from_id(enum AVColorTransferCharacteristic trc);
+
 /**
  * @}
  */
diff --git a/libavutil/tests/color_utils.c b/libavutil/tests/color_utils.c
index 4bdc550330e..95fb3c1d560 100644
--- a/libavutil/tests/color_utils.c
+++ b/libavutil/tests/color_utils.c
@@ -19,7 +19,7 @@
  */
 
 #include <stdio.h>
-#include "libavutil/color_utils.c"
+#include "libavutil/csp.h"
 #include "libavutil/macros.h"
 
 int main(int argc, char *argv[])
@@ -32,7 +32,7 @@ int main(int argc, char *argv[])
   };
 
   for(i = 0; i < AVCOL_TRC_NB; i++) {
-      avpriv_trc_function func = avpriv_get_trc_function_from_trc(i);
+      av_csp_trc_function func = av_csp_trc_func_from_id(i);
       for(j = 0; j < FF_ARRAY_ELEMS(test_data); j++) {
           if(func != NULL) {
               double result = func(test_data[j]);
-- 
2.35.1

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Re: [FFmpeg-devel] [PATCH v2 29/33] avutil/{color_utils, csp}: merge color_utils into csp and expose API

[Ronald S. Bultje]

Hi,

On Sat, Feb 4, 2023 at 11:50 AM Anton Khirnov <anton@khirnov.net> wrote:

> From: Leo Izen <leo.izen@gmail.com>
>
> libavutil/color_utils contains some avpriv_ symbols that map
> enum AVTransferCharacteristic values to gamma-curve approximations and
> to the actual transfer functions to invert them (i.e. -> linear).
>
> There's two issues with this:
> (1) avpriv is evil and should be avoided whenever possible
> (2) libavutil/csp.h exposes a public API for handling color that
>     already handles primaries and matricies
>
> I don't see any reason this API has to be private, so this commit takes
> the functionality from avutil/color_utils and merges it into avutil/csp
> with an exposed av_ API rather than the previous avpriv_ API.
>
> Every reference to the previous API has been updated to point to the
> new one. color_utils.h has been deleted as well. This should not break
> any applications as it only contained avpriv_ symbols in the first
> place, so nothing in that header could be referenced by other
> applications.
>

Ok with me.

Ronald
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[FFmpeg-devel] [PATCH v2 30/33] avutil/version: postpone the remaining API deprecations

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

They are too recent.

Signed-off-by: James Almer <jamrial@gmail.com>
---
 fftools/ffprobe.c   |  2 +-
 libavutil/version.h | 12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
index 5beaece094f..db37ec52f49 100644
--- a/fftools/ffprobe.c
+++ b/fftools/ffprobe.c
@@ -2588,7 +2588,7 @@ static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
     print_ts  ("best_effort_timestamp", frame->best_effort_timestamp);
     print_time("best_effort_timestamp_time", frame->best_effort_timestamp, &stream->time_base);
-#if LIBAVUTIL_VERSION_MAJOR < 58
+#if LIBAVUTIL_VERSION_MAJOR < 59
     AV_NOWARN_DEPRECATED(
     print_duration_ts  ("pkt_duration",      frame->pkt_duration);
     print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
diff --git a/libavutil/version.h b/libavutil/version.h
index 3bad472227a..24b9980601d 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -105,12 +105,12 @@
  * @{
  */
 
-#define FF_API_FIFO_PEEK2               (LIBAVUTIL_VERSION_MAJOR < 58)
-#define FF_API_FIFO_OLD_API             (LIBAVUTIL_VERSION_MAJOR < 58)
-#define FF_API_XVMC                     (LIBAVUTIL_VERSION_MAJOR < 58)
-#define FF_API_OLD_CHANNEL_LAYOUT       (LIBAVUTIL_VERSION_MAJOR < 58)
-#define FF_API_AV_FOPEN_UTF8            (LIBAVUTIL_VERSION_MAJOR < 58)
-#define FF_API_PKT_DURATION             (LIBAVUTIL_VERSION_MAJOR < 58)
+#define FF_API_FIFO_PEEK2               (LIBAVUTIL_VERSION_MAJOR < 59)
+#define FF_API_FIFO_OLD_API             (LIBAVUTIL_VERSION_MAJOR < 59)
+#define FF_API_XVMC                     (LIBAVUTIL_VERSION_MAJOR < 59)
+#define FF_API_OLD_CHANNEL_LAYOUT       (LIBAVUTIL_VERSION_MAJOR < 59)
+#define FF_API_AV_FOPEN_UTF8            (LIBAVUTIL_VERSION_MAJOR < 59)
+#define FF_API_PKT_DURATION             (LIBAVUTIL_VERSION_MAJOR < 59)
 
 /**
  * @}
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 31/33] avcodec/version: postpone the remaining API deprecations

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

They are either too recent, or still need work like FF_API_INIT_PACKET.

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/version_major.h | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index 04e6225f9b3..bcea37d7977 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -37,12 +37,12 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  */
 
-#define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_IDCT_NONE           (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_SVTAV1_OPTS         (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_AYUV_CODECID        (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_VT_OUTPUT_CALLBACK  (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_VT_HWACCEL_CONTEXT  (LIBAVCODEC_VERSION_MAJOR < 60)
-#define FF_API_AVCODEC_CHROMA_POS  (LIBAVCODEC_VERSION_MAJOR < 60)
+#define FF_API_INIT_PACKET         (LIBAVCODEC_VERSION_MAJOR < 61)
+#define FF_API_IDCT_NONE           (LIBAVCODEC_VERSION_MAJOR < 61)
+#define FF_API_SVTAV1_OPTS         (LIBAVCODEC_VERSION_MAJOR < 61)
+#define FF_API_AYUV_CODECID        (LIBAVCODEC_VERSION_MAJOR < 61)
+#define FF_API_VT_OUTPUT_CALLBACK  (LIBAVCODEC_VERSION_MAJOR < 61)
+#define FF_API_AVCODEC_CHROMA_POS  (LIBAVCODEC_VERSION_MAJOR < 61)
+#define FF_API_VT_HWACCEL_CONTEXT  (LIBAVCODEC_VERSION_MAJOR < 61)
 
 #endif /* AVCODEC_VERSION_MAJOR_H */
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 32/33] avformat/version: postpone the remaining API deprecations

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

They are either too recent, or still need work like FF_API_COMPUTE_PKT_FIELDS2.

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/version_major.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavformat/version_major.h b/libavformat/version_major.h
index 1db8e7600eb..b11f8113838 100644
--- a/libavformat/version_major.h
+++ b/libavformat/version_major.h
@@ -41,9 +41,9 @@
  * at once through the bump. This improves the git bisect-ability of the change.
  *
  */
-#define FF_API_COMPUTE_PKT_FIELDS2      (LIBAVFORMAT_VERSION_MAJOR < 60)
-#define FF_API_GET_END_PTS              (LIBAVFORMAT_VERSION_MAJOR < 60)
-#define FF_API_AVIODIRCONTEXT           (LIBAVFORMAT_VERSION_MAJOR < 60)
+#define FF_API_COMPUTE_PKT_FIELDS2      (LIBAVFORMAT_VERSION_MAJOR < 61)
+#define FF_API_GET_END_PTS              (LIBAVFORMAT_VERSION_MAJOR < 61)
+#define FF_API_AVIODIRCONTEXT           (LIBAVFORMAT_VERSION_MAJOR < 61)
 
 
 #define FF_API_R_FRAME_RATE            1
-- 
2.35.1

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[FFmpeg-devel] [PATCH v2 33/33] Bump major versions of all libraries

[Anton Khirnov]

From: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>
---
 doc/APIchanges              | 14 +-------------
 libavcodec/version.h        |  2 +-
 libavcodec/version_major.h  |  2 +-
 libavdevice/version.h       |  4 ++--
 libavdevice/version_major.h |  2 +-
 libavfilter/version.h       |  2 +-
 libavfilter/version_major.h |  2 +-
 libavformat/version.h       |  2 +-
 libavformat/version_major.h |  2 +-
 libavutil/version.h         |  4 ++--
 libpostproc/version.h       |  2 +-
 libpostproc/version_major.h |  2 +-
 libswscale/version.h        |  4 ++--
 libswscale/version_major.h  |  2 +-
 14 files changed, 17 insertions(+), 29 deletions(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index 385385bda8d..9600e0c2d6e 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -1,16 +1,4 @@
-Never assume the API of libav* to be stable unless at least 1 month has passed
-since the last major version increase or the API was added.
-
-The last version increases were:
-libavcodec:    2021-04-27
-libavdevice:   2021-04-27
-libavfilter:   2021-04-27
-libavformat:   2021-04-27
-libpostproc:   2021-04-27
-libswresample: 2021-04-27
-libswscale:    2021-04-27
-libavutil:     2021-04-27
-
+The last version increases of all lbiraries were on 2023-02-xx
 
 API changes, most recent first:
 
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 2ed4ef5547f..8c3d476003e 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,7 +29,7 @@
 
 #include "version_major.h"
 
-#define LIBAVCODEC_VERSION_MINOR  60
+#define LIBAVCODEC_VERSION_MINOR   0
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
diff --git a/libavcodec/version_major.h b/libavcodec/version_major.h
index bcea37d7977..dacbbbf3453 100644
--- a/libavcodec/version_major.h
+++ b/libavcodec/version_major.h
@@ -25,7 +25,7 @@
  * Libavcodec version macros.
  */
 
-#define LIBAVCODEC_VERSION_MAJOR  59
+#define LIBAVCODEC_VERSION_MAJOR  60
 
 /**
  * FF_API_* defines may be placed below to indicate public API that will be
diff --git a/libavdevice/version.h b/libavdevice/version.h
index 3e654fff892..25befdead12 100644
--- a/libavdevice/version.h
+++ b/libavdevice/version.h
@@ -29,8 +29,8 @@
 
 #include "version_major.h"
 
-#define LIBAVDEVICE_VERSION_MINOR   8
-#define LIBAVDEVICE_VERSION_MICRO 101
+#define LIBAVDEVICE_VERSION_MINOR   0
+#define LIBAVDEVICE_VERSION_MICRO 100
 
 #define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
                                                LIBAVDEVICE_VERSION_MINOR, \
diff --git a/libavdevice/version_major.h b/libavdevice/version_major.h
index 571257f31d7..b884fd42246 100644
--- a/libavdevice/version_major.h
+++ b/libavdevice/version_major.h
@@ -25,7 +25,7 @@
  * Libavdevice version macros
  */
 
-#define LIBAVDEVICE_VERSION_MAJOR  59
+#define LIBAVDEVICE_VERSION_MAJOR  60
 
 /**
  * FF_API_* defines may be placed below to indicate public API that will be
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 057ab634157..d5a6bc143a9 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -31,7 +31,7 @@
 
 #include "version_major.h"
 
-#define LIBAVFILTER_VERSION_MINOR  56
+#define LIBAVFILTER_VERSION_MINOR   0
 #define LIBAVFILTER_VERSION_MICRO 100
 
 
diff --git a/libavfilter/version_major.h b/libavfilter/version_major.h
index cb2238ffdd0..899dfdb27db 100644
--- a/libavfilter/version_major.h
+++ b/libavfilter/version_major.h
@@ -27,7 +27,7 @@
  * Libavfilter version macros
  */
 
-#define LIBAVFILTER_VERSION_MAJOR   8
+#define LIBAVFILTER_VERSION_MAJOR   9
 
 /**
  * FF_API_* defines may be placed below to indicate public API that will be
diff --git a/libavformat/version.h b/libavformat/version.h
index 789859fbe29..752aac16f7b 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -31,7 +31,7 @@
 
 #include "version_major.h"
 
-#define LIBAVFORMAT_VERSION_MINOR  37
+#define LIBAVFORMAT_VERSION_MINOR   0
 #define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
diff --git a/libavformat/version_major.h b/libavformat/version_major.h
index b11f8113838..9ccf40bdc17 100644
--- a/libavformat/version_major.h
+++ b/libavformat/version_major.h
@@ -29,7 +29,7 @@
 
 // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
 // Also please add any ticket numbers that you believe might be affected here
-#define LIBAVFORMAT_VERSION_MAJOR  59
+#define LIBAVFORMAT_VERSION_MAJOR  60
 
 /**
  * FF_API_* defines may be placed below to indicate public API that will be
diff --git a/libavutil/version.h b/libavutil/version.h
index 24b9980601d..eef270f66a2 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -78,8 +78,8 @@
  * @{
  */
 
-#define LIBAVUTIL_VERSION_MAJOR  57
-#define LIBAVUTIL_VERSION_MINOR  44
+#define LIBAVUTIL_VERSION_MAJOR  58
+#define LIBAVUTIL_VERSION_MINOR   0
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/libpostproc/version.h b/libpostproc/version.h
index c258957d4d0..bcbdd210c4f 100644
--- a/libpostproc/version.h
+++ b/libpostproc/version.h
@@ -30,7 +30,7 @@
 
 #include "version_major.h"
 
-#define LIBPOSTPROC_VERSION_MINOR   7
+#define LIBPOSTPROC_VERSION_MINOR   0
 #define LIBPOSTPROC_VERSION_MICRO 100
 
 #define LIBPOSTPROC_VERSION_INT AV_VERSION_INT(LIBPOSTPROC_VERSION_MAJOR, \
diff --git a/libpostproc/version_major.h b/libpostproc/version_major.h
index 7afc4dbb72f..771e17a9e7c 100644
--- a/libpostproc/version_major.h
+++ b/libpostproc/version_major.h
@@ -26,6 +26,6 @@
  * Libpostproc version macros
  */
 
-#define LIBPOSTPROC_VERSION_MAJOR  56
+#define LIBPOSTPROC_VERSION_MAJOR  57
 
 #endif /* POSTPROC_VERSION_MAJOR_H */
diff --git a/libswscale/version.h b/libswscale/version.h
index 9bb3b171a73..148efd83eb5 100644
--- a/libswscale/version.h
+++ b/libswscale/version.h
@@ -28,8 +28,8 @@
 
 #include "version_major.h"
 
-#define LIBSWSCALE_VERSION_MINOR   8
-#define LIBSWSCALE_VERSION_MICRO 112
+#define LIBSWSCALE_VERSION_MINOR   0
+#define LIBSWSCALE_VERSION_MICRO 100
 
 #define LIBSWSCALE_VERSION_INT  AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
                                                LIBSWSCALE_VERSION_MINOR, \
diff --git a/libswscale/version_major.h b/libswscale/version_major.h
index 2f8418780cd..88577a2b42a 100644
--- a/libswscale/version_major.h
+++ b/libswscale/version_major.h
@@ -24,7 +24,7 @@
  * swscale version macros
  */
 
-#define LIBSWSCALE_VERSION_MAJOR   6
+#define LIBSWSCALE_VERSION_MAJOR   7
 
 /**
  * FF_API_* defines may be placed below to indicate public API that will be
-- 
2.35.1

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