Hi! I'd like to remove black bars from svcds, pal svcd has 480x480 size, aspect 4:3 switches to 640x480, ntsc svcd has 480x576 size, aspect 4:3 switches to 768x576. I'd tried to use my coordinate knowledge, but I couldn't find the exact parameters to remove black bars with vop crop for both pal and ntsc svcds. Thx your help. Paco