diff options
Diffstat (limited to 'libavcodec/h263.c')
| -rw-r--r-- | libavcodec/h263.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c index 63a6a1df63..dca360dd9e 100644 --- a/libavcodec/h263.c +++ b/libavcodec/h263.c @@ -5156,6 +5156,7 @@ int h263_decode_picture_header(MpegEncContext *s) s->avctx->time_base.num*= get_bits(&s->gb, 7); if(s->avctx->time_base.num == 0){ av_log(s, AV_LOG_ERROR, "zero framerate\n"); + s->avctx->time_base= (AVRational){1001, 30000}; //prevent crash return -1; } gcd= ff_gcd(s->avctx->time_base.den, s->avctx->time_base.num); @@ -5538,6 +5539,10 @@ static int decode_vol_header(MpegEncContext *s, GetBitContext *gb){ check_marker(gb, "before time_increment_resolution"); s->avctx->time_base.den = get_bits(gb, 16); + if(!s->avctx->time_base.den){ + av_log(s->avctx, AV_LOG_ERROR, "time_base.den==0\n"); + return -1; + } s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1; if (s->time_increment_bits < 1) |