From 547ec4d3034d81f6d1a0e84bf58168d35f50baab Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 15 Oct 2012 20:35:01 +0200
Subject: [PATCH] ffmpeg: check timebase validity before using it.
Found-by: Daemon404
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
ffmpeg_filter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ffmpeg_filter.c b/ffmpeg_filter.c
index d0f25d82ad6..0a3b2cd78be 100644
--- a/ffmpeg_filter.c
+++ b/ffmpeg_filter.c
@@ -561,7 +561,7 @@ static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
if (!ist->framerate.num) {
AVRational codec_fr = av_inv_q(ist->st->codec->time_base);
codec_fr.den *= ist->st->codec->ticks_per_frame;
- if(av_q2d(codec_fr) < av_q2d(fr)*0.7)
+ if(codec_fr.num>0 && codec_fr.den>0 && av_q2d(codec_fr) < av_q2d(fr)*0.7)
fr = codec_fr;
}
--
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