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-rw-r--r--libavcodec/msmpeg4dec.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libavcodec/msmpeg4dec.c b/libavcodec/msmpeg4dec.c
index 7c260fe50e..d689b18572 100644
--- a/libavcodec/msmpeg4dec.c
+++ b/libavcodec/msmpeg4dec.c
@@ -586,8 +586,10 @@ static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
} else {
level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3);
}
- if (level < 0)
+ if (level < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n");
return -1;
+ }
level-=256;
}else{ //FIXME optimize use unified tables & index
if (n < 4) {