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-rw-r--r--libavformat/utils.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c
index fb93e3b57c..32067e9a79 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -812,7 +812,7 @@ static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
break;
case AVMEDIA_TYPE_AUDIO:
frame_size = get_audio_frame_size(st->codec, pkt->size);
- if (frame_size < 0)
+ if (frame_size <= 0 || st->codec->sample_rate <= 0)
break;
*pnum = frame_size;
*pden = st->codec->sample_rate;