--- src/video_output_opengl_qt.cpp.old	2010-12-14 20:54:08.719062351 +0100
+++ src/video_output_opengl_qt.cpp	2010-12-25 14:14:32.073354001 +0100
@@ -322,7 +322,7 @@
 
     // Initialize widget
     QGLFormat fmt;
-    fmt.setAlpha(true);
+   // fmt.setAlpha(true);
     fmt.setDoubleBuffer(true);
     fmt.setSwapInterval(1);
     if (mode == stereo)
@@ -331,7 +331,7 @@
     }
     _widget = new video_output_opengl_qt_widget(this, fmt, _container_widget);
     QObject::connect(_container_widget, SIGNAL(move_event()), _widget, SLOT(move_event()));
-    if (!_widget->format().alpha() || !_widget->format().doubleBuffer()
+    if (/*!_widget->format().alpha() ||*/ !_widget->format().doubleBuffer()
             || (mode == stereo && !_widget->format().stereo()))
     {
         if (mode == stereo)