[FFmpeg-devel] [PATCH 2/2] avformat/movenc: parse h264 packets to build Sync Sample and Recovery Point tables

[ffmpegandmahanstreamer at e.email]

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July 28, 2021 6:51 PM, "Derek Buitenhuis" <derek.buitenhuis at gmail.com> wrote:

> On 7/27/2021 2:08 PM, James Almer wrote:
> 
>> Since we can't blindly trust the keyframe flag in packets and assume its
>> contents are a valid Sync Sample, do some basic bitstream parsing to build the
>> Sync Sample table in addition to a Random Access Recovery Point table.
>> 
>> Suggested-by: ffmpeg at fb.com
>> Signed-off-by: James Almer <jamrial at gmail.com>
>> ---
>> libavformat/movenc.c | 125 +++++++++++++++++++++++++++++++++--
>> libavformat/movenc.h | 1 +
>> tests/ref/lavf-fate/h264.mp4 | 6 +-
>> 3 files changed, 123 insertions(+), 9 deletions(-)
> 
> This problem (due to insufficient API) exists for a lot more codecs
> than H.264 - are we going to fill movenc.c with parsers for HEVC,
> AV1, MPEG-4 ASP, etc., or just make only on codec behave this way?
> 
> - Derek
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