For some reason when every I capture at anything higher than 320/352x240 I get these lines in my capture:

http://students.washington.edu/scousin/rv/Trunks/Capture-problems1.bmp

it's not just interlacing as I know what that looks like from VCD work:

http://students.washington.edu/scousin/rv/Trunks/Capture-problems2.bmp

I've done a lot of searches can't seem to find any ref to this problem. It's not my source I get this on all VHS tapes (which btw play fine on the TV).

Thanks in advance