I guess I'm not sure. Some places it says 10-bit, but it does say 16-bit on the Red Giant site.
It may be a matter of which OpenGL card is used. Not all support floating point (16- or 32-bit) and some cards impose frame size limitations with deeper bit depths. Or it may be that some codecs use "16-bit QuickTime files" to store 10-bit data.
Shrug. I'm really not the one to ask on this, and I don't want to just speculate.
Bob Currier
Synthetic Aperture