From 50ec8a2acd4f7ad422c0883153b856e737adf973 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 7 Apr 2012 19:53:51 +0200 Subject: [PATCH] mpeg4videodec: Force quant_precision to stay within the valid range. Signed-off-by: Michael Niedermayer --- libavcodec/mpeg4videodec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index 99aecbb26a..43e9d324a6 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -1674,6 +1674,9 @@ static int decode_vol_header(MpegEncContext *s, GetBitContext *gb){ s->quant_precision = get_bits(gb, 4); /* quant_precision */ if(get_bits(gb, 4)!=8) av_log(s->avctx, AV_LOG_ERROR, "N-bit not supported\n"); /* bits_per_pixel */ if(s->quant_precision!=5) av_log(s->avctx, AV_LOG_ERROR, "quant precision %d\n", s->quant_precision); + if(s->quant_precision<3 || s->quant_precision>9) { + s->quant_precision = 5; + } } else { s->quant_precision = 5; }