Posted a slightly enhanced code drop for video wall (see link to .zip on http://robrelyea.com/demos/videowall ): Took advantage of the fact that ViewportWindow can take a UIElement, not just a MediaElement, as the “masterElement”. Built a context menu...
David, a WPF/Silverlight graphics PM, did a short write-up recently on some tips that he has shared with customers doing VideoWalls. WPF applications can only run with hardware acceleration when their window's size does not exceed the maximum texture...