avoid division by 0 at ff_mpeg4_set_one_direct_mv
Sample-Id: 00000168-google
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: [email protected]
---
libavcodec/ituh263dec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index e365210..48e860f 100644
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -750,6 +750,8 @@ int ff_h263_decode_mb(MpegEncContext *s,
}
if(IS_DIRECT(mb_type)){
+ if (!s->pp_time )
+ return AVERROR_INVALIDDATA;
s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
mb_type |= ff_mpeg4_set_direct_mv(s, 0, 0);
}else{
--
1.8.3.2
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