Quote:
Originally Posted by ajamils
I have following setup
- HTPC (i3, 8gb RAM, Nvidia 1050)
- Yamaha A3070 AVR
- JVC X790r Projector
I recently started using madVR with Kodi and MPC-HC and having a lot of issue playing 4K mkvs with HDR. When I play a file using MPC-HC (with madVR set to pass through HDR and no other settings changed), my projector automatically switches to HDR mode indicating that HDR signal is being received but the whole pictures has dark pink/purple tint on it. As soon as I end playback, everything goes back to normal. If I select Enhanced Video Renderer (Custom Presenter) in MPC-HC, video plays correctly but HDR tag is not passed so no auto switching is done by projector. HDR is turned off in Windows settings (and I am unable to turn it on because when I try to do that, everything goes black and by the time pictures resumes the prompt to confirm selection is gone)
I have also played with setting in madVR to convert HDR to SDR but the results have been less than ideal with more prominent noise and depending on the settings colors ranging for overly saturated to very pale.
I have already tried different HDMI cable and doing a clean install of Nvidia drivers but not much luck.
Separately, I'm having another issue which may or may not be related and that is I cannot set the resolution in Window or Nvidia control panel to 1080p/60. For some reason it keeps getting back to 4K/24. When I try to set the display setting to 1080p/60 the screen goes black and when it comes back I usually have a second or two to press a button to confirm changes otherwise it reverts back to 4k/24 setting. If in case I successfully change the settings it works for sometime and then randomly changes back to 4k/24.
I have checked on the AVR and video is set to "Pass through" on the projector it shows that it is receiving "4K signal". So there is something in the HTPC which keeps switching the resolution/frame rate. For the most part I can live with that setting but some of the programs (like Nvidia Control panel) do not scale even when scaling is set to 300% so they are impossible to use on 120" screen.
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same here, i get that purple picture with my JVC 550X too, and this for a while. 60hz or 24hz, it doesnt change anything.
Setting nvidia control pannel to Ycbcr422 10 bit or 12 bit fixed the issue. in RGB, the picture also turn magenta with the Windows HDR slidder on.
quick tip to turn on the windows hdr slidder , once you switch it on , press TAB ENTER. you could also use teamviewer with your phone
and btw this is an issue only with my projector, that same pc connected to an HDR TV doesnt have any of those issues.