<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<MediaElement Source="C:\video.wmv" Opacity="0.5">
<MediaElement.Clip>
<EllipseGeometry Center="220,220" RadiusX="220" RadiusY="220"/>
</MediaElement.Clip>
<MediaElement.LayoutTransform>
<RotateTransform Angle="180"/>
</MediaElement.LayoutTransform>
</MediaElement>
<MediaElement Source="C:\video.wmv" Opacity="0.5">
<MediaElement.Clip>
<EllipseGeometry Center="220,220" RadiusX="220" RadiusY="220"/>
</MediaElement.Clip>
</MediaElement>
</Canvas>