[FFmpeg-devel] movenc.c extradata handling for "aivx" video streams

[Michael Niedermayer]

On Wed, Mar 12, 2014 at 10:00:23AM -0400, Vincent Olivier wrote:
> Hi,
> 
> MKTAG('a', 'i', 'v', 'x') was recently added to isom.c for FCPX-remuxed XAVC 4:2:2 10bit (originally MXF-wrapped). It is correctly linked to AV_CODEC_ID_H264. But it requires a “passthrough” handling of the extradata (because it actually is not AVCC, but Annex-B, as per probing extensively with ffprobe). What would be the best way to patch this: to provide an AVOption to force extradata passthrough for the MOV muxer in “movenc.c” or to write the provided extra data as-is when the codec tag is set to “aivx”? Or is there even a way to do so programmatically without patching?

checking for the aivx tag seems the most user friendly
assuming this would end up making things just work out of the box

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

Let us carefully observe those good qualities wherein our enemies excel us
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