Here the deal.
FCP will do high-bit depth processing in YUV only. Furthermore, AE plug-ins used in FCP are dumbed down to 8-Bit RGB. Plug-in manufacturers have been begging Apple for an API or documentation for getting around this, but Apple has not been forthcoming. Apple plug-ins, however, can perform in YUV and higher bit depths. The only problem is that Apple doesn’t list which plug-in (effects) use which color bit-depth.
So, please write your Congressman or Apple to say this situation is just wrong.
Jeff Bernstein
Digital Desktop Consulting
Apple Pro Video VAR
XSAN Certified
323-653-7611