[SCM] libav/experimental: Fix assertion fail on audio files with invalid sample rates, fixes issue 2475.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 6cbce6365067e1bdd5127d9001809726ea538e09
Author: Daniel Kang <daniel.d.kang at gmail.com>
Date:   Thu Jan 6 03:30:19 2011 +0000

    Fix assertion fail on audio files with invalid sample rates,
    fixes issue 2475.
    
    Patch by Daniel Kang, daniel.d.kang at gmail
    
    Originally committed as revision 26240 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/utils.c b/libavformat/utils.c
index fb93e3b..32067e9 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;

-- 
Libav/FFmpeg packaging