FPGA board for video processing

Hi, I am looking for a new powerful FPGA board for video processing algorithm development. My work will focue on the architecture design of video signal processing algorithms. I hope the other parts are ready and convinient to use. It should have video input/output and big FPGA chip and big memory. It also will be better if there is a procesor on it. I should appreaciate any helpful commonts and information. Thanks Michael