This would suggest something in the HDMI chain does not support this format.
Have you tried a direct connection to the projector? If this works then we should check EDID when connected to other intermediary devices.
I wrote 10 or 12 bits because i dont know the highest bit depth vero 4k can upsample. Everything should be played back according to the source’s colorspace. No conversion. Except for when a BT.2020 video is playing and the tv/projector/display cant handle hdr and the player needs to convert to sdr. The gui can be in 1080p bt.709 60hz 8 bit. If it can go up to 10 bit or 12 bit ( still 1080p bt.709) without messing the table i posted above is an added bonus. Less banding.
Then an option should be made available in the menu.
Color depth option: Auto, 8bit, 10 bit, 12 bit ( if available)
Chroma upsampling: Auto, YCbCr 4:2:2 , YCbCr 4:4:4
Auto should work as the table in my previous post( or for the max available options through display EDID)
10 bit should be the minimum for HDR BT.2020 content and 8 bit for SDR Bt.709. Having 10 bit enabled should not activate BT.2020 signaling if a bt.709 file is playing whether is 1080p or 2160p. Colorspaces should remain intact.
Well Sam should answer that i guess and confirm if such a configuration is possible . I know kodi has a lot of limitations but that is how all video players should handle video for accurate playback. Like my previous post.
Currently there should be no negative effect of 10-bit Rec2020 being sent for all content. Others haven’t reported this issue so I am not sure why you only discovered it recently.
It should be possible to only switch modes when needed. It may not always be useful to have a long list of options as only some options are available at specific Refresh Rates. Perhaps an HDR ON/OFF option is all we need, with robust logic on how to handle different types of video
There is a negative effect that i tried to demonstrate with the samples i sent you. If you force bt.2020 and the source is bt.709 the colors are all wrong. I dont know what equipment other people and/or if they are playing this kind of content. Changing colorspaces when there is no need to i think is wrong.