Originally Posted by peterclones
Hoping someone can help with a new setup. I just bought a JVC RS-520, EVGA GTX 1080 card with RUIPRO Fiber 33 foot cable. I've never dabbled in 4k/HDR but my research suggested this would all work well together. I tried 4K for the first time last night with Kodi DSPlayer and madvr basic settings. Also MPC-HC with madvr. When I play a 4k mkv file the projector detects it and switches to HDR mode. However, everything turns a bright a pink color, like grayscale except it's pinkscale. Otherwise non-hdr 1080p content works fine.
For that test, in madvr I had set the HDR settings to "passthrough HDR content to display" and enabled "send HDR metadata to display." When I disable metadata though the projector does not autodetect HDR (as expected), so I select HDR picture mode manually and the pink is gone with the image colors showing normal and in 4k, although somewhat dim/dull (haven't calibrated yet). I don't know if at that point I'm viewing HDR or not. How do I check to know this for certain?
That doesn't sound good at all. You have some troubleshooting to do.
- Did you upgrade your PC or buy a new one? If you upgraded, you should run DDU
and reinstall a fresh driver. What you are describing sounds like a bad driver. Even if you didn't upgrade, I would consider running DDU.
- Try the Windows method for sending HDR metadata to the display. Set everything as before but toggle the HDR and WCG
switch in Windows. You will have to turn this off when watching SDR content, but this is just for a test.
- You could try DVDFab Player
to rule out madVR. It will also send the HDR metadata to the display. It is paid software, so you have to download a trial version.
- Most people using projectors are using madVR's tone mapping rather than the HDR mode of their projector. The low brightness of the projector means you aren't gaining anything in HDR mode. To use madVR's tone mapping, set your SDR color gamut and gamma in the calibration
section of madVR's settings. Then, under hdr, select convert HDR content to SDR using pixel shader math
. Start with a target nits of 200 nits (you can adjust the target nits higher or lower as you like), and check any of the other settings as you please. There are several different gamut mapping algorithms to try.
Try all of that and report back. madVR will tell you it's playing HDR content in its rendering stats (Ctrl + J).