madvr hdr fullscreen not working

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madvr hdr fullscreen not working Empty madvr hdr fullscreen not working

Post by Booty156 Fri Feb 12, 2021 2:37 am

Hi all.

Got a new HDR display today. Having some issues with madVR playing back some remuxs.

HDR works

if windows HDR is disabled. HDR gets enabled by madVR when I load up the file. But only works in windowed mode or in full screen if I right click or have the bar at the bottom open.

The monitor tells me HDR is enabled both when in fullscreen and not.

If I enable windows HDR settings first, the display looks like how it does in fullscreen.

TLDR: If HDR enabled looks washed out, if HDR is disabled and fullscreen looks washed out, if HDR is disabled and windowed, looks awesome....

I've tried a bunch of stuff. Any help?

Booty156

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madvr hdr fullscreen not working Empty Re: madvr hdr fullscreen not working

Post by Admin Fri Feb 12, 2021 1:47 pm

This unfortunately an issue with how madvr interacts with the graphics driver. madvr uses the driver API to enable HDR and not the global Windows API. This used to work properly in the past, but got broken after driver updates.

As a workaround you can use MPC Video Renderer, which does use the Windows API.

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madvr hdr fullscreen not working Empty Re: madvr hdr fullscreen not working

Post by Booty156 Sun Feb 14, 2021 4:44 am

Admin wrote:This unfortunately an issue with how madvr interacts with the graphics driver. madvr uses the driver API to enable HDR and not the global Windows API. This used to work properly in the past, but got broken after driver updates.

As a workaround you can use MPC Video Renderer, which does use the Windows API.

Thank you. So when in fullscreen it uses MadVR API, windowed mode it uses windows HDR API? If that's the case than windows HDR API is 100000x better than MadVRs...

I enabled MPC Video Renderer but just outputs in SDR.

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Post by Admin Sun Feb 14, 2021 1:38 pm

It is not a problem with the NVIDIA API itself, but with the driver not implementing it correctly like it did in the past.

MPC Video Renderer should be able to enable HDR mode in Windows 10. Are you perhaps using an older version of Windows? Also make sure that you are using latest version of the codec pack (=16.0.2).

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Post by Booty156 Sun Feb 14, 2021 7:48 pm

Win 10 20H2

And 16.0.2 Codec pack

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Post by Booty156 Sun Feb 14, 2021 8:21 pm

I think disabling "send hdr metadata to the display" and leaving windows HDR on is helping a lot

I am getting an awful amount of crushed blacks. Less so with this. But I think that's my display

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Post by Admin Sun Feb 14, 2021 11:49 pm

Which version of the NVIDIA driver do you use? Updating it may solve your problems.

Here is a topic with a list of know HDR issues for driver versions:
http://forum.doom9.org/showthread.php?t=176013

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Post by Booty156 Mon Feb 15, 2021 1:56 am

461.51

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Post by Admin Mon Feb 15, 2021 3:19 pm

You can try exclusive fullscreen in madvr.
madvr settings > rendering > general

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