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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-05-05 23:54:31 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-05-06 02:21:36 +0200 |
| commit | 5e24098b84424b4cf449d809d1027c49fb06c375 (patch) | |
| tree | c1bd9585fd709d50b37fa62e9e130c373bd5f8e7 | |
| parent | 0fa8d19987f03444365a5c7f73b7ecf1520b011e (diff) | |
| download | ffmpeg-5e24098b84424b4cf449d809d1027c49fb06c375.tar.gz | |
avidec: detect mpeg4 keyframes in indexless avi
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavformat/avidec.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 27ae09aa73..98b3be6738 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -1002,6 +1002,23 @@ resync: e= &st->index_entries[index]; if(index >= 0 && e->timestamp == ast->frame_offset){ + if (index == st->nb_index_entries-1){ + int key=1; + int i; + uint32_t state=-1; + for(i=0; i<FFMIN(size,256); i++){ + if(st->codec->codec_id == CODEC_ID_MPEG4){ + if(state == 0x1B6){ + key= !(pkt->data[i]&0xC0); + break; + } + }else + break; + state= (state<<8) + pkt->data[i]; + } + if(!key) + e->flags &= ~AVINDEX_KEYFRAME; + } if (e->flags & AVINDEX_KEYFRAME) pkt->flags |= AV_PKT_FLAG_KEY; } |