--- a/src/multimedia/video/qvideosurfaceformat.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/multimedia/video/qvideosurfaceformat.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -252,7 +252,7 @@
 
 bool QVideoSurfaceFormat::isValid() const
 {
-    return d->pixelFormat == QVideoFrame::Format_Invalid && d->frameSize.isValid();
+    return d->pixelFormat != QVideoFrame::Format_Invalid && d->frameSize.isValid();
 }
 
 /*!