Originally Posted by Ronomy
The radiance is best sent 422 but you can output what your TV needs for the best image. The radiance may convert better than your TV.unless your TV is best with 422. My JVC doesn't do well with 422. With the Darblet after the radiance it might be best to output 444 to the Darblet after its updated since the Darblet processes in 444. Let the Radiance convert to 444...don't let the Darblet convert 422 to 444 back to 422.
I have a Radiance XS-3D, and so can choose to send the Darblet YCbCr 4:4:4 as you noted above. However, it is technically
best to send the projector (DLA-RS35) RGB with PC video levels, according to the Greg Rogers' review of the projector. What am I supposed to do then?
For the edification of all, and in the event I have misunderstood it, here is the excerpt (with key sentences underlined) from the Greg Rogers review of the RS-35 that further explains what I stated above:
The two HDMI 1.3 inputs accept 480i/p, 576i/p, 720p60/50, 1080i60/50, and 1080p60/50/24 digital video signals, and up to 1920 x 1200 (60 Hz) digital PC signals. The HDMI inputs accept 4:2:2 YCbCr signals, and RGB or 4:4:4 YCbCr signals with up to 12-bit Deep Color. Those signal types can be automatically or manually selected in the on-screen menu. Manual selection of the signal type is important so a user can override automatic selection if there are problems with any particular type of source signal.
The correct color-decoding matrix (Rec. 709) was automatically selected for high-definition YCbCr signals, but was incorrectly selected for standard-definition YCbCr signals. Only RGB signals produced correct color with a 480i/p or 576i/p HDMI connection. JVC needs to correct that problem and should consider also adding manual selection of the Rec. 601 (SD) and Rec. 709 (HD) color-decoding matrices because there have been multiple upconverting DVD players that output YCbCr signals with the wrong color encoding.
Automatic or manual selection of Standard and Enhanced HDMI/DVI levels is provided. The Standard mode is intended for YCbCr and RGB-video input signals (black at digital code 16 and reference white at 235), and the Enhanced mode is intended for digital RGB-PC input signals (black at 0 and reference white at 255). However, the Standard mode clipped incoming digital signals below level 16 (black) and above level 235 (reference white).
Although signal levels below black aren’t intended to be seen, the headroom above reference white (digital level 235) is provided for video signal excursions that may occur in video sources during capture and processing. To prevent possible signal clipping, use the Enhanced mode and recalibrate the Brightness and Contrast controls for the proper black level and headroom above reference white.
Thanks for any input.