Custom Resolution Utility (CRU)

[joevt]

(02-15-2020 10:51 AM)RonBurgundy Wrote:  Hi guys . Why Im seeing deep color only in YCbCr 444 and not in other color formats . Is this means that if I want to play a game or watch a movie in HDR i have to choose YCbCr 444 for correct HDR ?

You should be seeing deep color for RGB and YCbCr 4:4:4. According to the HDMI 1.4b spec, in the section describing the HDMI VSDB, it says the deep color modes (16, 12, 10 bpc) refer to RGB. Normally YCbCr 4:4:4 only supports 8 bpc. Setting the YCbCr 4:4:4 deep color flag means that the deep color flags for RGB also apply to YCbCr 4:4:4.

It looks like CRU is including the YCbCr 4:2:2 and YCbCr 4:4:4 flags from the CTA extension block in the HDMI VSDB. There should be a separate place to edit the CTA extension block?

HDR is not deep color. It's part of HDMI 2.0a and 2.0b. I don't have those specs, but I think edid-decode knows how to interpret those parts.