MP don't change refresh rate (1 Viewer)

Flavio

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May 11, 2019
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Hi everyone,
I have a problem with my MP installation because DRR does not work. The operating system is a Windows 10 and the video card is a Radeon RX580 with drivers 20.12.1. The HTPC is connected to my JVC N5 projector.
I enabled DRR in configuration but this doesn't work and always stays at 60Hz. In the log (enclosed) you can see a "unable to change refresh rate 23Hz for monitor 1 for resolution 4096 x 2160". Of course the projector is able to display the refresh rate at 23Hz. On the same HTPC if I start the same film with MPC-HC everything works perfectly and the projector switches to 23Hz.

I also tried madVR but the situation doesn't change

23-47-49.png

Cattura.PNG

Any help?
 

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ajs

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    Try check Force refresh rate ... Or/And Use device reset ...
     

    joecrow

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    I also tried madVR but the situation doesn't change
    It might be interesting, for troubleshooting, to try Madvr with MPC-HC and if that works disable all MPCs internal filters and enable external LAV which means it will be set up the same as MP, which should give us an idea as to where the problem is.
    I'm running with Madvr (DRR disabled in MP) and an AMD RX570 no problem with switching to 23hz and all other refresh rates supported on my regular full HD TV, sorry I don't have 4k.
     
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    Flavio

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    May 11, 2019
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    Thank's for reply.

    I solved by changing the refresh rate value for CINEMA 23,976 from 23 to 24.

    Now I have another problem.
    Activating madVR as render does not reveal the correct AR. Let me explain. In madVR I created several profiles that depending on the AR of the movie automatically set the correct configuration on my JVC N5. With MediaPlayer this doesn't work, I think it depends on what I select in the zoom configuration but I tried several settings without success. Any help? Thank you.
     

    Flavio

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    May 11, 2019
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    Activating madVR as render does not reveal the correct AR.

    Sorry solved this too, in lav videos I had selected the D3D11 in native mode. With this mode madVR does not detect and does not manage black bars and AR.
     

    joecrow

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    Sorry solved this too, in lav videos I had selected the D3D11 in native mode. With this mode madVR does not detect and does not manage black bars and AR.
    Yes there are a number of issues with D3D11 and Madvr has not been updated for ages, no idea what is happening there, in the past there were frequent updates with fixes and improvements. Glad you found the problem if you have not already done so the DXVA2 (Copy back) is recommended for AMD GPUs.
     

    Flavio

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    May 11, 2019
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    I use madshi's latest beta and setting the D3D11 Copy Back everything works, but since I have a Radeon RX580 I think the DXVA2 Copy Back is better
     

    joecrow

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    I use madshi's latest beta and setting the D3D11 Copy Back everything works, but since I have a Radeon RX580 I think the DXVA2 Copy Back is better

    Ah that is interesting, is the Madvr beta version generally available and if yes where can I download it?
     

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