using vdub, you can apply the null transform filter and then you can use crop
using avisynth, you can use crop(int left, int top, -int right, -int bottom)
so if you wanted to crop 8 pixels off the left and right it would look like
crop(8,0,-8,-0)
now cropping and resizing so you don't mess up the aspect ratio is not one of my strong suits
cropping is fine, but i've seen vdub produce some ugly resizes.
try lanczosresize(720, 576), and use vdub's null transform filter to apply cropping.
KioAtWork: I'm so bored. I don't have class again for another half hour.
Minion: masturbate into someones desk and giggle about it for the remaining 28 minutes