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Code Issues Releases Activity

avformat/mov: add VP8 codec support

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Demuxing only. Muxing is disabled as altref frame handling is not
defined in the spec, and there's no way to know the presence of
such frames during stream initialization.

Based on a patch by Steven Liu.

Fixes ticket #7000

Reviewed-by: Carl Eugen Hoyos <ceffmpeg@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2018-02-05 22:26:26 -03:00
parent 8885a29e5d
commit f7aacf4ab7
3 changed files with 7 additions and 0 deletions
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1
libavformat/isom.c
View File

@ -186,6 +186,7 @@ const AVCodecTag ff_codec_movvideo_tags[] = {
{ AV_CODEC_ID_H264, MKTAG('x', 'a', 'l', 'g') }, /* XAVC-L HD422 produced by FCP */
{ AV_CODEC_ID_H264, MKTAG('a', 'v', 'l', 'g') }, /* Panasonic P2 AVC-LongG */
{ AV_CODEC_ID_VP8, MKTAG('v', 'p', '0', '8') }, /* VP8 */
{ AV_CODEC_ID_VP9, MKTAG('v', 'p', '0', '9') }, /* VP9 */
{ AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', ' ') },

1
libavformat/mov.c
View File

@ -2397,6 +2397,7 @@ static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
case AV_CODEC_ID_EAC3:
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_VC1:
case AV_CODEC_ID_VP8:
case AV_CODEC_ID_VP9:
st->need_parsing = AVSTREAM_PARSE_FULL;
break;

5
libavformat/movenc.c
View File

@ -6079,6 +6079,11 @@ static int mov_init(AVFormatContext *s)
av_log(s, AV_LOG_ERROR, "VP9 only supported in MP4.\n");
return AVERROR(EINVAL);
}
} else if (track->par->codec_id == AV_CODEC_ID_VP8) {
/* altref frames handling is not defined in the spec as of version v1.0,
* so just forbid muxing VP8 streams altogether until a new version does */
av_log(s, AV_LOG_ERROR, "VP8 muxing is currently not supported.\n");
return AVERROR_PATCHWELCOME;
}
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
track->timescale = st->codecpar->sample_rate;