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avformat/mov: export the correct initial extratada from samples with multiple stsd

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The first sample in the stsc box may not refer to the first stsd entry.
This is the case in h264/thezerotheorem-cut.mp4, and as such the
fate-h264_redundant_pps-side_data test is updated accordingly.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2025-07-27 16:14:12 -03:00
parent a4a3b3bf54
commit eefa6de7d5
2 changed files with 18 additions and 4 deletions
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14
libavformat/mov.c
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@ -10580,6 +10580,20 @@ static int mov_read_header(AVFormatContext *s)
MOVStreamContext *sc = st->priv_data;
uint32_t dvdsub_clut[FF_DVDCLUT_CLUT_LEN] = {0};
fix_timescale(mov, sc);
/* Set the primary extradata based on the first Sample. */
if (sc->stsc_count && sc->extradata_size && !sc->iamf) {
sc->last_stsd_index = sc->stsc_data[0].id - 1;
av_freep(&st->codecpar->extradata);
st->codecpar->extradata_size = sc->extradata_size[sc->last_stsd_index];
if (sc->extradata_size[sc->last_stsd_index]) {
st->codecpar->extradata = av_mallocz(sc->extradata_size[sc->last_stsd_index] + AV_INPUT_BUFFER_PADDING_SIZE);
if (!st->codecpar->extradata)
return AVERROR(ENOMEM);
memcpy(st->codecpar->extradata, sc->extradata[sc->last_stsd_index], sc->extradata_size[sc->last_stsd_index]);
}
}
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
st->codecpar->codec_id == AV_CODEC_ID_AAC) {
sti->skip_samples = sc->start_pad;

8
tests/ref/fate/h264_redundant_pps-side_data
View File

@ -1,12 +1,12 @@
a35cca13c3f91d1a279bf576b8264d05 *tests/data/fate/h264_redundant_pps-side_data.nut
596153 tests/data/fate/h264_redundant_pps-side_data.nut
#extradata 0: 34, 0x851f08e4
92fe70291f72acf94ba56b426bbaccb0 *tests/data/fate/h264_redundant_pps-side_data.nut
596100 tests/data/fate/h264_redundant_pps-side_data.nut
#extradata 0: 34, 0x850408e3
#tb 0: 1/48000
#media_type 0: video
#codec_id 0: h264
#dimensions 0: 1920x1080
#sar 0: 0/1
0, -2002, 0, 2002, 247959, 0xdb721881, S=1, New Extradata, 34, 0x850408e3
0, -2002, 0, 2002, 247959, 0xdb721881
0, 0, 4004, 2002, 43356, 0xa366eb79, F=0x0
0, 2002, 2002, 2002, 11423, 0x9c0a86fa, F=0x0
0, 4004, 8008, 2002, 50801, 0xfbfe860d, F=0x0