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mov: fix seek to next root atom in fragmented mp4

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If some but not all moof's are referenced in an sidx, whole fragments
were being skipped.

Fixes tickets 7377, 7389, and 8502

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
John Stebbins 2020-03-29 13:32:45 -07:00 committed by Michael Niedermayer
parent 20ade59d96
commit 21a65d6310
1 changed files with 2 additions and 1 deletions
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libavformat/mov.c
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@ -7734,7 +7734,8 @@ static int mov_switch_root(AVFormatContext *s, int64_t target, int index)
mov->next_root_atom = 0;
if (index < 0 || index >= mov->frag_index.nb_items)
index = search_frag_moof_offset(&mov->frag_index, target);
if (index < mov->frag_index.nb_items) {
if (index < mov->frag_index.nb_items &&
mov->frag_index.item[index].moof_offset == target) {
if (index + 1 < mov->frag_index.nb_items)
mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset;
if (mov->frag_index.item[index].headers_read)