I started to fiddle with FFDSHOW and one thing I changed was to use VMR9. My problem is that the black level is obviously not 0 as the black bars on a 2.4:1 DVD are visibly dark gray, whereas with the overlay they're black. I presume it's something to do with IRE or somesuch, what I don't know is how to cure it. This happens even just using VMR 9 in ZP without FFDSHOW. How do I change this?