i made a custom board，it chip is AM3894,the DDR2 work on 400MHz,
when capture video with the resolution 640*480，it works very well。
when i change the resolution more than 800*600，there is nothing display on monitor， but if i stop the video input source，the monitor display the a frame of video。
is the problems caused by low bandwidth of DDR2。
please give some suggestions about the problem。