[SCM] libav/experimental: If either of num or den is 0 make both 0 in av_set_pts_info().

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit e7e5d1e990a2e67a3fddbacb93125ee402d7b21b
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Thu Jul 2 12:47:58 2009 +0000

    If either of num or den is 0 make both 0 in av_set_pts_info().
    
    Originally committed as revision 19326 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/utils.c b/libavformat/utils.c
index d7bc23f..cd18971 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -3313,4 +3313,7 @@ void av_set_pts_info(AVStream *s, int pts_wrap_bits,
             av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/s->time_base.num);
     }else
         av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
+
+    if(!s->time_base.num || !s->time_base.den)
+        s->time_base.num= s->time_base.den= 0;
 }

-- 
Libav/FFmpeg packaging