band pass filter for video signal

i read 20 frames from a video signal by for loop for k = 1 :20 b = read(vehObj, k); i need to pass it through band pass filter with band 500 kHz any help in designing the filter

[Walter Roberson]

What size is the image? It would have to be on the order of 1000 x 1000 in order for there to be any meaningful 500 kHz filtering.