Re: [FFmpeg-devel] [PATCH v1] avformat/mov_demuxer: Extended MOV demuxer to handle APV video content

[James Almer <jamrial-at-gmail.com@ffmpeg.org>]

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On 5/6/2025 6:28 AM, Dawid Kozinski wrote:
> - Added apv extension to the list of extensions for ff_mov_demuxer
> 
> Signed-off-by: Dawid Kozinski <d.kozinski@samsung.com>
> ---
>   libavformat/demux.c | 1 +
>   libavformat/mov.c   | 7 ++++++-
>   2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/libavformat/demux.c b/libavformat/demux.c
> index 2795863567..4e76de0629 100644
> --- a/libavformat/demux.c
> +++ b/libavformat/demux.c
> @@ -126,6 +126,7 @@ static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
>           { "truehd",     AV_CODEC_ID_TRUEHD,       AVMEDIA_TYPE_AUDIO    },
>           { "evc",        AV_CODEC_ID_EVC,          AVMEDIA_TYPE_VIDEO    },
>           { "vvc",        AV_CODEC_ID_VVC,          AVMEDIA_TYPE_VIDEO    },
> +        { "apv",        AV_CODEC_ID_APV,          AVMEDIA_TYPE_VIDEO    },
>           { 0 }
>       };
>       int score;
> diff --git a/libavformat/mov.c b/libavformat/mov.c
> index cb81b6c4da..b7495b33ed 100644
> --- a/libavformat/mov.c
> +++ b/libavformat/mov.c
> @@ -2982,6 +2982,7 @@ static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
>       case AV_CODEC_ID_VP9:
>           sti->need_parsing = AVSTREAM_PARSE_FULL;
>           break;
> +    case AV_CODEC_ID_APV:
>       case AV_CODEC_ID_EVC:
>       case AV_CODEC_ID_AV1:
>           /* field_order detection of H264 requires parsing */
> @@ -9318,6 +9319,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
>   #if CONFIG_IAMFDEC
>   { MKTAG('i','a','c','b'), mov_read_iacb },
>   #endif
> +{ MKTAG('a','p','v','C'), mov_read_glbl },
>   { 0, NULL }
>   };
>   
> @@ -11022,7 +11024,10 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
>                   return FFERROR_REDO;
>           }
>   #endif
> -        else
> +        else if(st->codecpar->codec_id == AV_CODEC_ID_APV && sample->size > 4) {
> +            const uint32_t au_size = avio_rb32(sc->pb);
> +            ret = av_get_packet(sc->pb, pkt, au_size);
> +        } else
>               ret = av_get_packet(sc->pb, pkt, sample->size);
>           if (ret < 0) {
>               if (should_retry(sc->pb, ret)) {

Will apply.


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