That was one of my first thoughts, too. But Bluerayplayer can not playback ProRes 4:4:4 (screen stays blue, no audio) and the files created by MlRawViewer are played back flawless. Fcpx is based on quicktime, as far as I know, therefore both show the same codec. But Davinci resolve also states, that it is 4:2:2.
By the way, the bitrate is 186.05 MBits/s @ 23,98 fps 1080p, that would be ok, or am I wrong?
Is there a pref file anywhere on macs?
Regards,
kontrakatze