[Warner306]

I discovered that 90% of my faults (drop outs, cutting out resolution change from 4K to 1080 and back again, blue screens etc.. ) were all down to the cable I was using..

The Ruipro cable fixed all the drop outs and blue screens I was getting after stopping playback.. That's my fault for messing around with the Amazon redmere cables I had purchased. I will be sending those back now.. The Ruipro is very good .. It detects HDR and sends the signal directly to the JVC like it should be and HDR kicks in ..

Couple of things I noticed however.. When HDR is active it automatically sets the Gamma to HDR (ST.2084) which looks stunning, however I noticed it crushes a lot of the dark and black areas.. So I experimented and changed the Gamma for HDR to B and that was a bit better for the blacks (in brought back highlights in the blacks) but the brighter scenes were not as good as when they were with (ST.2084) gamma.. Hard to explain but has anyone else experiemented with this at all? would like to know what others use for the Gamma setting with HDR content..

Also Those with HTPC.. Do you set your desktop resolution to 4K or 1080p? and what colour space are we supposed to set desktop as within the GPU? RGB Full 4:4:4 or YcBcR ? Thank you.. 

Here are some pics with Gamma at HDR (ST.2084)


and now with Gamma for HDR set to B:

You should set your desktop to RGB Full at 8-bits at 60 Hz because it is a PC not a video player. Play a video with a different refresh rate and return to the GPU control panel. Now set the bit depth to 10-bits for each video fps. You will need 10-bits for HDR to engage on your display with AMD cards. This also requires your projector's black level is set to RGB Full.  

 i thought that was the job of LAV video filter apart from the HDR switching. LAV video sets the 'output formats' while madvr sets the aspect and refresh rate.

i was under the impression that if no 'switch rates' was set up in madvr that it uses the desktop settings. if you have set madvr up to switch to different aspects and refresh rates then this makes the desktop settings null and void and the only time it comes into play is when you return to the kodi interface or indeed your desktop. however if you have not added different aspects and refresh rates in madvr then your desktop refresh rate becomes the 'default' for all video playback.

so it matters not what you set your desktop to regarding aspect and refresh as long as you have set madvr up to switch to different ones for which madvr and lav video take over. 

 Read the relevant section in my guide. It explains these madVR settings in detail. The section I am talking about runs from RGB levels all the way down to bit depths and the "Note" in red, bold text. The bold, red text explains GPU configuration for 10-bit output.