fate: add -v 0 to ffmpeg flags

Originally committed as revision 24836 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/fate-run.sh

@@ -45,7 +45,7 @@ run(){
 }
 
 ffmpeg(){
-    $target_exec $target_path/ffmpeg "$@"
+    $target_exec $target_path/ffmpeg -v 0 "$@"
 }
 
 framecrc(){