diff -r 5c840e221993 -r f8cf277dca36 QTfrontend/util/libav_iteraction.cpp
--- a/QTfrontend/util/libav_iteraction.cpp	Thu Aug 09 01:01:06 2012 +0400
+++ b/QTfrontend/util/libav_iteraction.cpp	Thu Aug 09 01:24:38 2012 +0400
@@ -286,7 +286,7 @@
 
     int s = float(pContext->duration)/AV_TIME_BASE;
     QString desc = QString(tr("Duration: %1m %2s\n")).arg(s/60).arg(s%60);
-    for (int i = 0; i < pContext->nb_streams; i++)
+    for (int i = 0; i < (int)pContext->nb_streams; i++)
     {
         AVStream* pStream = pContext->streams[i];
         if (!pStream)