[FFmpeg-devel] [PATCH v3 1/6] avformat: add muxer support for H266/VVC

[Nuo Mi]

On Sat, Jan 27, 2024 at 10:38 PM James Almer <jamrial at gmail.com> wrote:

> On 1/27/2024 1:15 AM, Nuo Mi wrote:
> > diff --git a/libavformat/isom_tags.c b/libavformat/isom_tags.c
> > index a575b7c160..705811e950 100644
> > --- a/libavformat/isom_tags.c
> > +++ b/libavformat/isom_tags.c
> > @@ -123,6 +123,9 @@ const AVCodecTag ff_codec_movvideo_tags[] = {
> >       { AV_CODEC_ID_HEVC, MKTAG('d', 'v', 'h', 'e') }, /* HEVC-based
> Dolby Vision derived from hev1 */
> >                                                        /* dvh1 is
> handled within mov.c */
> >
> > +    { AV_CODEC_ID_VVC, MKTAG('v', 'v', 'i', '1') },  /* VVC/H.266 which
> indicates parameter sets may be in ES */
> > +    { AV_CODEC_ID_VVC, MKTAG('v', 'v', 'c', '1') },  /* VVC/H.266 which
> indicates parameter shall not be in ES */
> > +
> >       { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
> >       { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '2') },
> >       { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '3') },
>
> This list is for mov only, not mp4. You're already adding these two
> entries to codec_mp4_tags[] bellow, for ISOBMFF.
>
hmm, we can't remove this.
codec_mp4_tags used by the mp4 muxer only.
ff_codec_movvideo_tags will be used by the decoder.


> Are these defined anywhere in Apple's documentation?
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