madVR - high quality video renderer (GPU assisted)

[huhn]

do you have the bug in the first place?

[Childofbodom]

Originally Posted by VergiL

The "solution" for the moment is to restart the PC before launching MPC or to restart Explorer (manually or by bat) each time MPC is launched...

Ok thnx will look into this!

Originally Posted by Aleksoid1978

Looks like a madVR bug - since MPC VR has no problems with 10-bit output.

I can indeed confirm that MPCVR does report out 10bit but unsure if it actually does or just reports it.

[Aleksoid1978]

I'm sure

[clsid]

Does it happen just with HDR and just with NVIDIA?
Madvr uses private NVIDIA API for HDR, while MPCVR uses standard Windows API.
So could be a driver regression.

[clsid]

A question for all Madvr users.

Do you notice any difference when doing this on Windows 11?
Right-click on your player .exe > Properties > Compatibility > enable "Use Legacy ICC Color Management"

This fixes an issue with MPCVR where HDR is washed out in fullscreen on some systems. I am curious if it also helps/hurts when using Madvr. Then maybe I can enable it by default for MPC-HC.

[huhn]

well time for this again:
http://bugs.madshi.net/my_view_page.php
be detailed about it and move on.

i have no HDR display connected to a win 11 pc and i will not install win 11 on my HTPC so i can't help here at all.

[VergiL]

Originally Posted by clsid

Does it happen just with HDR and just with NVIDIA?
Madvr uses private NVIDIA API for HDR, while MPCVR uses standard Windows API.
So could be a driver regression.

I have an NVIDIA card but i have not updated the drivers since a lot and 10 bit work fine until few weeks. And the bug is on sdr too.

[huhn]

madVR can use the windows api too so that should be easy to check.

[brazen1]

Hmmm? Fwiw, I use W11 24H2 including all latest updates as of 3/11/25. Also, latest Nvidia driver 572.70. HDR and SDR both report 10bit in the madVR OSD and several other places I've confirmed. Full screen exclusive and Full screen windowed modes both report 10bit. The same is true when I use Kodi VideoPlayer (Windows API), MPC-BE/HC with madVR renderer (Nvidia API), or with MPC-Video Renderer (Windows API). Refresh rates are matched and/or doubled. I've done no workarounds or anything.

[Amuat]

Originally Posted by Asmodian

You do need to use specific options for frames presented in advanced and the when and how shall the GPU be flushed.

Would someone be so kind as to present or point to the proper settings? Advanced frames are recommended to be set at 1 or 3 as I recall, I've been using the latter. In addition to the flushing settings, was there anything to be done in the NVidia CP (application specific or general) other than to turn on VSync (if that's even right)?

[Siso]

On my machine win 10, nvidia card - if I set frames in advance from 1-3, I don't get presentation glitches at all, but if I right click to see some menu in the player madvr flashes...If I set the frames in advance to 8 which is the default, madvr doesn't flash, it makes presentation glitches...

[mclingo]

I can confirm that restarting windows explorer does put it back in 10 bit on my system, running latest MADVR win11 24H2, RX 7800xt - to be honest i hadnt even noticed it was doing that

[NeonPhoenix]

Hey guys, I use HDR movie file to tone map it using pixel shaders and watch it in SDR but the image is so dark for some reason. May I get some help please?

Random online streaming site: https://i.imgur.com/AOi2nuU.jpeg
MPC-HC + MadVR with the settings below: https://i.imgur.com/qwDXiLD.jpeg
Settings: https://i.imgur.com/BKenptC.png
MPC-HC + MadVR with HDR enabled: https://i.imgur.com/uAUp98p.jpeg

My display's brightness is 400 nits.

[mclingo]

Try setting the peak luminance in hdr settings to a very low value my tv is only a 400 knits and I've got it set to 150 and its plenty bright, You might have it set too high.

[VergiL]

Originally Posted by brazen1

Hmmm? Fwiw, I use W11 24H2 including all latest updates as of 3/11/25. Also, latest Nvidia driver 572.70. HDR and SDR both report 10bit in the madVR OSD and several other places I've confirmed. Full screen exclusive and Full screen windowed modes both report 10bit. The same is true when I use Kodi VideoPlayer (Windows API), MPC-BE/HC with madVR renderer (Nvidia API), or with MPC-Video Renderer (Windows API). Refresh rates are matched and/or doubled. I've done no workarounds or anything.

Weird...

[NeonPhoenix]

Originally Posted by mclingo

Try setting the peak luminance in hdr settings to a very low value my tv is only a 400 knits and I've got it set to 150 and its plenty bright, You might have it set too high.

Am I not supposed to enter the real value there? I don't want to fix it that way. I tried setting it to even 50 and it still looks darker than HDR.

[huhn]

what told you it is 400?

[clsid]

Start by resetting madvr settings to defaults. Then only change the target nits value. Do not randomly copy (tonemapping) settings from other people.

[huhn]

i played a bit around with presentmon there is no other surface accessing the windows/display beside DWM and the player at all times.

but i found out how to trigger the issue it's by starting another 3d application also just flip in that case. which forces madVR from independent flip to flip.

it will not use 10 bit again even if it returns to independent flip

there is sometimes a second DWM entry when madVR/player is not in focus and as long as that is around 10 bit is disabled again madVR changes to flip.

so not much to learn from at all
https://i.postimg.cc/tyH6FyKr/broken-state.png
https://i.postimg.cc/Lmjg0WF9/fixed.png

the fixed state will immediately break again if tabbed out.

[NeonPhoenix]

Originally Posted by huhn

what told you it is 400?

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