diff options
Diffstat (limited to 'libavformat/movenc.c')
| -rw-r--r-- | libavformat/movenc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 122bc2d5b9..67c7214fb3 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -2490,7 +2490,8 @@ static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov, if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags) flags |= MOV_TRUN_SAMPLE_FLAGS; } - if (!(flags & MOV_TRUN_SAMPLE_FLAGS)) + if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 && + get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags) flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS; if (track->flags & MOV_TRACK_CTTS) flags |= MOV_TRUN_SAMPLE_CTS; |