From 9100d4d6327b077c44e5fdbc8082255f11953978 Mon Sep 17 00:00:00 2001
From: David Czech <davidczech510@gmail.com>
Date: Mon, 20 Dec 2010 09:58:27 +0000
Subject: [PATCH] Fix crash if invalid bit-rate was read from file. Fixes issue
 2426.

Patch by David Czech, davidczech510 gmail

Originally committed as revision 26061 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/utils.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index c8e6d66..61aa7d4 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1870,10 +1870,11 @@ static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
     AVStream *st;
 
     /* if bit_rate is already set, we believe it */
-    if (ic->bit_rate == 0) {
+    if (ic->bit_rate <= 0) {
         bit_rate = 0;
         for(i=0;i<ic->nb_streams;i++) {
             st = ic->streams[i];
+            if (st->codec->bit_rate > 0)
             bit_rate += st->codec->bit_rate;
         }
         ic->bit_rate = bit_rate;
-- 
2.7.4