Custom Resolution Utility (CRU)

[djsolidsnake86]

(01-23-2026 12:09 AM)MUC Wrote:  

(01-22-2026 09:36 PM)djsolidsnake86 Wrote:  but when i open a dv video on mpc hc with mpc video renderer and the option set to prefer dv over pq the monitor go always in hdr mode

That's what I meant.

Windows and any other PC operating system cannot output a Dolby Vision signal, as is common with Ultra HD Blu-ray players or streaming boxes.

The MPC Video Renderer can extract some of the Dolby Vision information from files to make the most of what can be output via an HDR10 layer. This is also documented on GitHub: https://github.com/clsid2/mpc-hc/issues/2869

Quote:DV is converted into HDR or tonemapped to SDR (depending on your settings).
It does not support outputting DV directly to your screen.

Dolby Vision is a proprietary technology that is not publicly documented. Therefore, if a graphics driver were to output a genuine Dolby Vision signal without a license and Digital Rights Management (DRM), it would be a violation of Dolby's terms and conditions and would be subject to legal action. The necessary protected video path for Dolby Vision is only available on Android and proprietary operating systems (Apple TV, Xbox firmware). Microsoft's DirectX architecture does not meet these protection requirements.

HDR certification = Dolby Vision on Windows initially only tells the operating system to use the information from the Dolby VSVDB for tone mapping (color primaries and luminance values). Microsoft's "Dolby Vision Extensions" presumably allow the Microsoft Edge browser and the Microsoft "Movies & TV" app to access non-visible Microsoft components within DirectShow. The exact outcome is unknown. However, it certainly doesn't match the Dolby Vision signals of a true Ultra HD Blu-ray player.

Unfortunately, I don't even know the difference between these two:
https://apps.microsoft.com/detail/9pltg1...n-us&gl=US
https://apps.microsoft.com/detail/9mvmz9...n-us&gl=US

I know your LG TV displays the Dolby Vision logo. However, a detailed analysis of the signal would reveal that essential information is missing. Please see for yourself. There is an HDMI Diagnostics mode on LG TVs you can access yourself:

• Open the settings of the TV by pressing on the gear icon on the remote.
• Highlight or move the pointer over the All Settings option and open all settings.
• General > Programmes
• Move the pointer or highlight Programme Tuning & Settings, don't klick it.
• Press the „1“ key on the remote five times quickly.
• Select "More" at the very bottom right.
  

A diagnostic screen titled "HDMI Diagnostics" appears. In the upper left corner, under "General", it says "HDR Type: DolbyLL." This stands for Low Latency Dolby Vision (LLDV). LLDV means that the source device (the graphics card) performs tone mapping. The LLDV output curve largely corresponds to the HDR10 curve. This is called Perceptual Quantizer (PQ). Therefore, these two modes (LLDV<>HDR10) are difficult for human perception to distinguish.

However, true Dolby Vision would require a Vendor Specific Info Frame (VSIF) to be included in the signal sent by the graphics card. You can see this on the diagnostic screen in the middle on the right, where all values are 0, even when playing a generic Dolby Vision demo. If you had an AV receiver between the graphics card and the TV, the receiver would show you HDR10 in its signal diagnostics, but not Dolby Vision.

We don't know exactly what Microsoft is doing with Dolby Vision here. It might offer some benefits for games and apps explicitly created and advertised for this „PC Dolby Vision interface“, but it doesn't correspond to what we know as Dolby Vision movies.

@ToastyX: Regarding CRU, it would be useful to make the Dolby VSVDB editable, at least for the interface definition. I think the information in my post above should be sufficient for that.

Drop-down list for the interface?
Two Option buttons for the bit depth (either 10 OR 12 bits) with check-box to activate?

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(01-22-2026 09:36 PM)djsolidsnake86 Wrote:  panasonic 65lz1000?

Please import the attached file in the same way as before. Make sure that "Panasonic-TV (active)" is listed as the device at the top of CRU when you import.

thanks for the explanation
but dolby vision will not work even in games that has support for it on win11?

[CheapTV]

Hi there.

Same for my cheap TCL p745 (98UHD). I can let show windows 11 that my TV ist DV certifiate, but my TV only show HDR10 mode. Also with another tool called "ColorControl" i can set my TV to HDR10+ mode. My TV also use this mode after modding, but for what. Windows cant handle this.

And as allways VRR Flickering... dont know what to try anymore. Cheap hardware will show cheap picture. Simple, try to accept it.

My TV use DV in Prime Video or Netflix TV Apps, but not in W11.

Also DV is not DV. You need DV Game in your TV, and even then XBOX will use it, maybe not. I am so frustrated. Sorry for that.

With VRR my TV lose sometimes signal with high res and 144 Hz. Even TCL changed my TV-Mainboard, still remains. Tried best cables. Fibre also too. 0,5m length. Nothing help.

Maybe i upload the EDID for my TV and hopefully someone can help.

[djsolidsnake86]

(01-23-2026 01:47 PM)CheapTV Wrote:  Hi there.

Same for my cheap TCL p745 (98UHD). I can let show windows 11 that my TV ist DV certifiate, but my TV only show HDR10 mode. Also with another tool called "ColorControl" i can set my TV to HDR10+ mode. My TV also use this mode after modding, but for what. Windows cant handle this.

And as allways VRR Flickering... dont know what to try anymore. Cheap hardware will show cheap picture. Simple, try to accept it.

My TV use DV in Prime Video or Netflix TV Apps, but not in W11.

Also DV is not DV. You need DV Game in your TV, and even then XBOX will use it, maybe not. I am so frustrated. Sorry for that.

With VRR my TV lose sometimes signal with high res and 144 Hz. Even TCL changed my TV-Mainboard, still remains. Tried best cables. Fibre also too. 0,5m length. Nothing help.

Maybe i upload the EDID for my TV and hopefully someone can help.

how you enabled hdr10+ with color control?

[CheapTV]

First VRR must be disabled, at least for me. Then add a new Profile at the WinForms UI. Right click on your profile and click on HDR set it to "include" further down "Output Mode" -> HDR10+. If you want it automaticaly you must set "enabled" and let start ColorControl as a service at Windows Start. ready.

Also i advice with a cheap TV like mine VA Panel without Local Dimming to use HGiG.
Mine hits around digital 430 Nits. But this is aweful to look at in games. All colors and brightness lock compressed. So first setup HDR10 or maybe for you HDR10+ but dont use this sh... DTM crap. Then start the windows HDR calibr... tool and start Nvidias control panel or AMDs Driver Panel. Then go to section where you can change brightness and contrast. lower first brighntess till your HDR cali.. tool clip hard at 1000 Nits instead lower original XXX. But in Nvidia dont go lower 30 or it will clip with gamma. for me its brightness 32% and contrast 45%. So peak white hit exact 1000 digital nits in the app.

Most games are mastered for 1000 Nits.

After that set a color profile, even with ColorControl. Important is that gamma should stay on "Piecewise", this prevents to crush blacks instead hard Gamma 2.2 line.

Start games and set in Games to 1000 Nits and enjoy another good experience in HDR even with cheap TV and no fu... DTM BS or compressed 400 Nits HGiG.

Believe me i am so happy now.

Forgot to mention: HDR10+ works for my TV on PC mode or gaming mode or anything, but only not for VRR Mode! 4k 144 Hz i have a steady stable picture. Only VRR make all ...

Here some screenshots, native ist 4k screen, but i set 1440p as prefered with CRU. My TCL has a very good scaling, better than GPU scaling. Text is really sharp. Also my 4090 get a good amount of headroom.

[EeK]

I have a Samsung S90F TV, which is native 3840x2160@144Hz, and I'm trying to create an ultrawide custom resolution (either 3840x1620 or 3840x1600) while maintaining the 144Hz refresh rate and hopefully avoiding DSC, at Full RGB 10-bit (for HDR). Is that possible?

I've tried using SRE, as I didn't know how to do it using CRU (I tried adding customs resolutions to the extension block via TV Resolutions and HDMI Support, but had no idea what code to use for "Other resolution"), and every resolution now caps out at 120Hz.

Edit: It seems that if I change anything at all using CRU (for example, removing 4096x2160 resolutions and/or adding missing audio formats), the only refresh rates that become available to me are 120Hz and 100Hz. If I only use SRE, I get all resolutions at a max of 144Hz, but lose the audio formats necessary for LPCM 7.1 (missing in the S90F and manually added via CRU).

@ToastyX, you're my only hope.

[MUC]

(01-24-2026 04:20 PM)EeK Wrote:  Is that possible?

Please show us the original EDID of the TV. Run edid-test.exe on your computer:
https://www.monitortests.com/edid-test.zip

This will create a file named "edid-test.TXT" in the same folder. Please attach this TXT file here.

Which graphics card are you using?

[EeK]

(01-24-2026 10:59 PM)MUC Wrote:  

(01-24-2026 04:20 PM)EeK Wrote:  Is that possible?

Please show us the original EDID of the TV. Run edid-test.exe on your computer:
https://www.monitortests.com/edid-test.zip

This will create a file named "edid-test.TXT" in the same folder. Please attach this TXT file here.

Which graphics card are you using?

Thanks for replying.

I've run reset-all and rebooted my PC before running edid-test. The resulting TXT is attached to this post. I have a 4090.

However, I was trying to add a custom resolution by editing the first of three existing CTA-861 extension blocks. A user in the AVS Forum told me to create an entirely new DisplayID 2.0 block and add a detailed resolution to that block.

It seems to have worked! I also edited the first CTA-861 extension block (the one with "HDMI 2.1" between parenthesis at the end) to add the missing audio formats for LPCM.

I now have all default resolutions, plus the newly created 1600p one, showing up at their maximum refresh rate (144Hz), as well as working LPCM 5.1/7.1 surround sound.

Crossing my fingers it stays like this after a reboot. What's the best way of creating a backup of this config? Simply using CRU's export function and saving it as a BIN/EXE file?

[MUC]

(01-26-2026 12:41 PM)EeK Wrote:  It seems to have worked!

The raw EDID shows that this TV already contains a Video Timing Data Block (VTDB) for 3840 x 1600 @ 144 Hz (CVT-RB @ 987.25 MHz) in the second CTA-861 block. However, CRU doesn't display this, only the VTDB for 60 Hz, which is also present there. The Nvidia driver is actually supposed to offer 3840 x 1600 @ 144 Hz as an option without CRU on this TV. Strange. If I assign your S90F EDID to my Nvidia card externally (without CRU) using an emulator, I can easily select 3840 x 1600 @ 144 Hz in the driver. But if it works for you now the way you did it, all the better. For modes with pixel clock frequencies above 655 MHz and without VICs, using a DisplayID via HDMI is certainly a good option.

DSC wouldn't be the problem here. On GeForce RTX 30 or 40 series cards, Nvidia DSR only disappears if the needed pixel clock of the output signal is higher than 1350 MHz. This is not related to DSC. Please also see this:

https://tftcentral.co.uk/news/nvidia-dsr...-sometimes
https://tftcentral.co.uk/articles/loads-...nd-updates

Quote:This issue does seem to impact NVIDIA cards more than AMD, and like the availability of DSR and DLDSR features it’s not specifically related to the use of DSC per se, it’s related to the single head limit of the GPU and how top-end monitor specs are handled.

I tested the GeForce RTX 50 series with CRU and it works up to almost exactly twice the pixel clock (2700 MHz). Even with DSC, because there's simply no other option for 4K @ 275 Hz via HDMI 2.1.

Yes, you can easily export the current EDID and use it later. The binary format (BIN) is universal. If you save it as a BIN file, you can also use it with other EDID editors.

[kristianity1977]

Hi

Can someone break this down for me so that I can understand it?

You can use the RegEdit trick in the first post to disable multiple heads:
Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\#### (usually 0000)
Value: "EnableTiledDisplay"=dword:00000000

I can find my way to the correct folder in registry, but i dont understnad what im supposed to actually do regarding this part:

Value: "EnableTiledDisplay"=dword:00000000


Basically i messaged on here a while back and still havent found out how to solve my issue where windows is showing 165hz as a selectable refresh rate when its not supported by my TV at 4K (it IS however supported at lower resoluions.)

This is causing my TV to hang when certain games are automatically defaulting to the highest refresh rate windows has available. I really need to remove this 165hz mode if possible. Ive tried everything suggested within CRU, but the option of 165hz never goes away

Many thanks!

[MUC]

(01-26-2026 09:54 PM)kristianity1977 Wrote:  I can find my way to the correct folder in registry, but i dont understnad what im supposed to actually do

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000

• Click on this 0000 subkey/folder and check the right side of the window to see if there is already a registry value named "EnableTiledDisplay". It probably isn‘t.
• Right-click on the 0000 subkey/folder and create a DWORD registry value: New > DWORD (32-bit) Value
• Immediately after creating, you can change its name by typing. If you've already clicked somewhere else, you can right-click on the new value, select Rename, and change it to "EnableTiledDisplay" (without quotation marks).
• The default data for this new value is automatically set to 0x00000000 (0). That's what you want, so you don't need to change anything.
• Restart your computer.
  

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(12-12-2025 07:54 PM)kristianity1977 Wrote:  I've tried everything on CRU that I can think of using guides etc but that 165 option on my Display setting list just stays the saem no matter what.

Samsung S95F: The 165 Hz modes are implemented in the 3rd CTA-861 block as VTDBs DisplayID Type X ("ten"). These cannot (yet) be edited with CRU. The AMD FreeSync block is also located there. Since you don't need either of these with an Nvidia card, please try the attached file.

Import this EDID into CRU.