avformat/mov.c: require tfhd to begin parsing trun

Detecting missing tfhd avoids re-using tfhd track info from the previous
moof. For files with multiple tracks, this may make a mess of the
avindex and fragindex, which can later trigger av_assert0 in
mov_read_trun().

Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavformat/isom.h b/libavformat/isom.h
index e629663949..69452cae8e 100644
--- a/libavformat/isom.h
+++ b/libavformat/isom.h
@@ -87,6 +87,7 @@ typedef struct MOVAtom {
 struct MOVParseTableEntry;
 
 typedef struct MOVFragment {
+    int found_tfhd;
     unsigned track_id;
     uint64_t base_data_offset;
     uint64_t moof_offset;