avformat/mov: fix missing extra data updating

The stsc_index is checked and updated for the next sample. If the
next sample needs to update stsd_index and stsc_index, then only
stsc_index is updated, which leads to a missing
AV_PKT_DATA_NEW_EXTRADATA. For example, the sample in the second
chunk needs to update both.

entry[0]
    first_chunk = 1
    samples_per_chunk = 3
    sample_description_index = 1
entry[1]
    first_chunk = 2
    samples_per_chunk = 1
    sample_description_index = 2
entry[2]
    first_chunk = 3
    samples_per_chunk = 8
    sample_description_index = 2

The fix is simple: first check and update stsd_index for current
sample, then check and update stsc_index for the next.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

0 files changed, 0 insertions, 0 deletions