Native pixel format

[hjmallon]

I am not sure how the apple encoder works with respect to its "native" input pixel format.

ProRes is a YCbCr format rather than RGB so the most 'native' and high-quality pixel formats for interchange are:

• ProRes 4444: 'y416' '4:4:4:4 AY'CbCr 16-bit little endian full range alpha, video range Y'CbCr'
• ProRes 422: 'v216' '4:2:2 Y'CbCr 16-bit little endian video range (http://developer.apple.com/library/mac/technotes/tn2162/)'

Hopefully that is helpful!