AJA Video Capture Card Directshow Filters

I am in need of a simple C# application that will invoke directshow filters for use with an AJA video capture card. Link to filters and further info: [login to view URL] The application should allow the user to select a directshow device that is available on the system and display the live video window in the application. The video window should be scaled down (source video will be 1080i or 720p or standard-def resolutions.) The ability to auto-switch between video formats is also necessary. Bonus points if you have an AJA video card for testing, however, it is not necessary provided that the application works over here on my end.