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avformat/mov: set primary extradata based on the first Sample only if it's not already in place 

If the first Sample references the first stsd entry, then setting it here is
redundant.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2025-08-03 13:30:42 -03:00
parent 399c766d2a
commit 2681eede9c
1 changed files with 2 additions and 2 deletions
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4
libavformat/mov.c
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@ -10684,9 +10684,9 @@ static int mov_read_header(AVFormatContext *s)
uint32_t dvdsub_clut[FF_DVDCLUT_CLUT_LEN] = {0};
fix_timescale(mov, sc);
/* Set the primary extradata based on the first Sample. */
/* Set the primary extradata based on the first Sample if it doesn't reference the first stsd entry. */
if (sc->stsc_count && sc->extradata_size && !sc->iamf &&
sc->stsc_data[0].id > 0 && sc->stsc_data[0].id <= sc->stsd_count) {
sc->stsc_data[0].id > 1 && sc->stsc_data[0].id <= sc->stsd_count) {
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];