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authorMichael Niedermayer <michaelni@gmx.at>2013-10-29 16:12:01 +0100
committerMichael Niedermayer <michaelni@gmx.at>2013-10-29 16:13:07 +0100
commitce55e667facbaf0e7aa8d543b114b28d22c2a250 (patch)
treebb50729871b19b7f865ed9fbe0986b8cccde68cd
parent6103faaa51d2f46d6ccecaad9a089b4b42ff66ee (diff)
downloadffmpeg-ce55e667facbaf0e7aa8d543b114b28d22c2a250.tar.gz
avcodec/mpegvideo_enc: check that max_b_frames is not negative
Fixes crash found by saste Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
-rw-r--r--libavcodec/mpegvideo_enc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 9b503865c6..3db975c5ff 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -452,6 +452,11 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
return -1;
}
+ if (s->max_b_frames < 0) {
+ av_log(avctx, AV_LOG_ERROR,
+ "max b frames must be 0 or postive for mpegvideo based encoders\n");
+ return -1;
+ }
if ((s->codec_id == AV_CODEC_ID_MPEG4 ||
s->codec_id == AV_CODEC_ID_H263 ||