This STILL happens with version 3.1 of the drivers!
I now this has come up before, but I couldn't find anything saying if it has been solved:
If I have image+overlay selected & am using either of the 10bit codecs, I get a serious shift in the blacks. As I prefer to edit with that setting always on, it drives me nuts to have switch back & forth all the time...
G5 Quad 2.5| FCP HD | Kona LHe
G5 2x2Ghz | FCP HD | Kona 2 | Kona iO
G4 2x1.25Ghz | FCP HD | Cinewave Analog BOB, Digital BOB | HD BOB