[Cinephile]

As giulianoprs said, Ctrl + J.

If you are using a 4K display, you are downscaling to 1080p in that image. You are also outputting at 59.94 Hz rather than 23.796 Hz (matching the video frame rate, 23.976 fps). 

His max rendering stats are also above 41ms and as a result there are dropped frames everywhere. 73 just in the opening shot, I’d say the settings are off.

@warner

I have successfully adjusted my chain to 8-bit RGB Full in NVIDIA settings, full range in madVR and also on the display (black levels set to high). It just works.

In saying that, I am still perplexed as to why any form of hardware decoding results in visible banding on my setup. I have tried internal and external LAV filters in mpc BE but as soon as hardware decoding is enabled it produces very visible banding. This is on a 2080 Ti.

Any ideas? I don’t mind using my CPU for software decoding (9900K so plenty of headroom) but would love to know the reason for banding issues as described above.

I should note this is only happening with HDR files. I read somewhere that DXVA is not compatible with HDR? 

Hmmm, are you on Windows 1903? It had some universal banding issues with media playback that should soon be fixed. Did you try using other color space settings or setting the output bit depth to 8-bits as opposed to 12-bits?

The RTX cards have been problematic with madVR so far. I don't think they have the best driver support. But I haven't heard of rampant banding besides that introduced by Windows 1903, which was apparently hotfixed by Microsoft recently.

Is the banding obvious when playing the Spears & Munsil quantization test videos provided in the bit depths section? I find those videos are the easiest to use to see obvious banding. Is your display known to have any issues with banding? Are you using PC mode as the assigned input?

I am on Windows 1903, yes. Hadn’t heard about the universal banding issue before. That would affect all players then, yes?

Haven’t run any test files yet, only parts of actual movies. The opening shot of Dunkirk is a great example where software decoding produces perfect clarity while hardware decoding turns the sky into a blocky mess. The display is LG’s C7 OLED which I haven’t heard much about in terms of banding. Bit depth is 8-bits in NVIDIA settings and madVR. Not using PC mode because it forces 4:4:4 subsampling on my unit which kills HDR at 60hz due to bandwidth requirements.

It might just be RTX cards not playing nice.