From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 536E944061 for ; Wed, 25 Jan 2023 16:58:10 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 2CE4968BE15; Wed, 25 Jan 2023 18:56:33 +0200 (EET) Received: from mail0.khirnov.net (red.khirnov.net [176.97.15.12]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 33B6468BD81 for ; Wed, 25 Jan 2023 18:56:19 +0200 (EET) Received: from localhost (localhost [IPv6:::1]) by mail0.khirnov.net (Postfix) with ESMTP id D4E612405EC for ; Wed, 25 Jan 2023 17:56:16 +0100 (CET) Received: from mail0.khirnov.net ([IPv6:::1]) by localhost (mail0.khirnov.net [IPv6:::1]) (amavisd-new, port 10024) with ESMTP id 6jXul-suJQ_K for ; Wed, 25 Jan 2023 17:56:16 +0100 (CET) Received: from libav.khirnov.net (libav.khirnov.net [IPv6:2a00:c500:561:201::7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "libav.khirnov.net", Issuer "smtp.khirnov.net SMTP CA" (verified OK)) by mail0.khirnov.net (Postfix) with ESMTPS id 0F2962405B5 for ; Wed, 25 Jan 2023 17:56:05 +0100 (CET) Received: from libav.khirnov.net (libav.khirnov.net [IPv6:::1]) by libav.khirnov.net (Postfix) with ESMTP id BEBD53A035B for ; Wed, 25 Jan 2023 17:55:58 +0100 (CET) From: Anton Khirnov To: ffmpeg-devel@ffmpeg.org Date: Wed, 25 Jan 2023 17:55:24 +0100 Message-Id: <20230125165537.5371-6-anton@khirnov.net> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230125165537.5371-1-anton@khirnov.net> References: <20230125165537.5371-1-anton@khirnov.net> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 06/19] lavc/encode: pass through frame durations to encoded packets X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: The generic code can only handle the no-delay case. Encoders with delay need to be handled individually, which will be done in the following commits. --- doc/APIchanges | 2 +- libavcodec/avcodec.h | 7 +++++++ libavcodec/encode.c | 14 ++++++++++++-- libavcodec/options_table.h | 1 + 4 files changed, 21 insertions(+), 3 deletions(-) diff --git a/doc/APIchanges b/doc/APIchanges index f52337990f..a20a899365 100644 --- a/doc/APIchanges +++ b/doc/APIchanges @@ -15,7 +15,7 @@ libavutil: 2021-04-27 API changes, most recent first: 2023-01-xx - xxxxxxxxxx - lavc 59.57.100 - avcodec.h - Add AV_CODEC_FLAG_COPY_OPAQUE. + Add AV_CODEC_FLAG_COPY_OPAQUE and AV_CODEC_FLAG_FRAME_DURATION. 2023-01-13 - xxxxxxxxxx - lavu 57.44.100 - ambient_viewing_environment.h frame.h Adds a new structure for holding H.274 Ambient Viewing Environment metadata, diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 54ab7b81f9..1daa1106aa 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -267,6 +267,13 @@ typedef struct RcOverride{ * taken from the first of those. */ #define AV_CODEC_FLAG_COPY_OPAQUE (1 << 7) +/** + * Signal to the encoder that the values of AVFrame.duration are valid and + * should be used (typically for transferring them to output packets). + * + * If this flag is not set, frame durations are ignored. + */ +#define AV_CODEC_FLAG_FRAME_DURATION (1 << 8) /** * Use internal 2pass ratecontrol in first pass mode. */ diff --git a/libavcodec/encode.c b/libavcodec/encode.c index 555bd3ff96..c92beaf8e1 100644 --- a/libavcodec/encode.c +++ b/libavcodec/encode.c @@ -231,10 +231,13 @@ int ff_encode_encode_cb(AVCodecContext *avctx, AVPacket *avpkt, if (avpkt->pts == AV_NOPTS_VALUE) avpkt->pts = frame->pts; - if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) { - if (!avpkt->duration) + if (!avpkt->duration) { + if (frame->duration) + avpkt->duration = frame->duration; + else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) { avpkt->duration = ff_samples_to_time_base(avctx, frame->nb_samples); + } } ret = ff_encode_reordered_opaque(avctx, avpkt, frame); @@ -463,6 +466,13 @@ FF_ENABLE_DEPRECATION_WARNINGS return ret; } + // unset frame duration unless AV_CODEC_FLAG_FRAME_DURATION is set, + // since otherwise we cannot be sure that whatever value it has is in the + // right timebase, so we would produce an incorrect value, which is worse + // than none at all + if (!(avctx->flags & AV_CODEC_FLAG_FRAME_DURATION)) + dst->duration = 0; + return 0; } diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h index 4b38c42043..322ec7a156 100644 --- a/libavcodec/options_table.h +++ b/libavcodec/options_table.h @@ -59,6 +59,7 @@ static const AVOption avcodec_options[] = { {"qscale", "use fixed qscale", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_QSCALE }, INT_MIN, INT_MAX, 0, "flags"}, {"recon_frame", "export reconstructed frames", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_RECON_FRAME}, .unit = "flags"}, {"copy_opaque", "propagate opaque values", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_COPY_OPAQUE}, .unit = "flags"}, +{"frame_duration", "use frame durations", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_FRAME_DURATION}, .unit = "flags"}, {"pass1", "use internal 2-pass ratecontrol in first pass mode", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_PASS1 }, INT_MIN, INT_MAX, 0, "flags"}, {"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"}, -- 2.35.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".