You want an OGD1
Thursday, April 17th, 2008no, seriously, you want one. 
Sure, its a little pricey at $1500, but its the development platform for a truly free Video Board, and if you are into FPGA programming you definitely want one. FPGAs can offer quite drastic performance improvements, especially for image processing and video stuff. And considering that the OGD1 is not only one such a beast but also has two DVI connectors, it is surely a great platform for any kind of Video-Editing Acceleration Hardware.
And if all of that cannot convince you, just take a look at that marvelous layout:
Have fun!
Available from Traversal Technology. More information about the Pre-Orders here.
More information about the Open Graphics Project.
Spread the word, 
Cheers
-Richard
PS.: Unless you are able to program VHDL or you can hire an Engineer to do it for you, you probably don’t want one of those.