For madVR you should set the output in Nvidia Control Panel to full RGB. 8bit for the refreshrates above 25Hz and 12bit for the 23.976 / 24Hz refreshrates to make full usage of the deep colours.Display is set to 4k res, desktop color depth 32-bit, output color depth 8 bit; RGB, full dynamic range. I have tried YCbCr422 and 10bit or 12 bit but the smae thing happens in Mediaportal. I need to be in fullscreen exclusive mode, otherwise I get washed out colors in HDR.
Thanks for the suggestions. Unfortunately nothing changed while testing.Maybe the problem is the frequency? After viewing it becomes unsupported in the current mode. And I would try changing Hardware decoder ...
Btw: It would be nice if others who experience this issue can confirm my results.
No problems with the colors when you start/stop the video in windowed mode
No problems with the colors when you trigger and overlay (for example Task Manager) on top of fullscreen MP.
So it looks like when an overlay is opened on top of MP, the colors are correct. When closing Task Manager (to go back to MP fullscreen) the issue was present again. The only real solution is to shut down MediaPortal.
so ATI works correctly for HDR under MP ? This means it's not totally MP faulty !!!
I have a menu for Nvidia about 3D stuff, does this exist for HDR ?