Chewtobacca: What I said was true, even though it doesn't sound like it. I took a raw screenshot from the blu-ray, processed it in photoshop with my settings, then took the same screenshot from the script running through media player classic. Skin tones were more pink for example. When I removed the matrix setting from ConvertToYV12, the screenshot I took looked identical to the photoshop one.
So wrong or not, if you want my corrections, don't specify the matrix the second time.