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lavf/movenc: Write 'dby1' minor brand if Dolby content is being muxed to MP4 

This is as per:
   * mp4ra: http://mp4ra.org/#/brands
   * Dolby Vision muxing spec (which is public):
       https://professional.dolby.com/siteassets/content-creation/dolby-vision-for-content-creators/dolby_vision_bitstreams_within_the_iso_base_media_file_format_dec2017.pdf

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2021-08-03 17:13:42 +01:00
parent da5497a1a2
commit 68815d6791
2 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
libavformat/movenc.c
View File

@ -4991,7 +4991,7 @@ static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int64_t pos = avio_tell(pb);
int has_h264 = 0, has_av1 = 0, has_video = 0;
int has_h264 = 0, has_av1 = 0, has_video = 0, has_dolby = 0;
int i;
for (i = 0; i < s->nb_streams; i++) {
@ -5004,6 +5004,11 @@ static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
has_h264 = 1;
if (st->codecpar->codec_id == AV_CODEC_ID_AV1)
has_av1 = 1;
if (st->codecpar->codec_id == AV_CODEC_ID_AC3 ||
st->codecpar->codec_id == AV_CODEC_ID_EAC3 ||
st->codecpar->codec_id == AV_CODEC_ID_TRUEHD ||
av_stream_get_side_data(st, AV_PKT_DATA_DOVI_CONF, NULL))
has_dolby = 1;
}
avio_wb32(pb, 0); /* size */
@ -5029,6 +5034,8 @@ static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
ffio_wfourcc(pb, "iso6");
if (has_av1)
ffio_wfourcc(pb, "av01");
if (has_dolby)
ffio_wfourcc(pb, "dby1");
} else {
if (mov->flags & FF_MOV_FLAG_FRAGMENT)
ffio_wfourcc(pb, "iso6");

4
tests/ref/fate/copy-trac3074
View File

@ -1,5 +1,5 @@
da6122873fb83ce4340cf5d0ab8d475e *tests/data/fate/copy-trac3074.mp4
334012 tests/data/fate/copy-trac3074.mp4
452d91e7c6889b787717fef25b6fce43 *tests/data/fate/copy-trac3074.mp4
334016 tests/data/fate/copy-trac3074.mp4
#tb 0: 1/48000
#media_type 0: audio
#codec_id 0: eac3