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Old 15th April 2019, 18:10   #55741  |  Link
zapatista
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Originally Posted by huhn View Post
just use a synthetic 3D LUT.

and again HDR-SDR has nothing todo with this.
what is a "synthetic 3D LUT" ?

i am trying to figure out if i can create a 3DLut file for my display without using a light meter (or if i can use a generic 3DLut file for ex , if i know some of the basic parameters my display, like max nits, black level and the color space it is intended for).

one suggestion somebody made is that i might be able to create a 3D Lut profile from EDID data of the display with DisplayCAL

the main purpose of the 3D lut file would be to load it in madvr and send down converted 4k rec.2020 video to my 1080 display while maintaining the rec.2020 color space.
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Old 15th April 2019, 19:37   #55742  |  Link
huhn
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synthetic 3D LUT is a 3D LUT created by 2 synthetic profiles instead of using a synthetic source and a measured target/destination.

EDID information are not going to help you her.

i wanted to make a thread with common HDR->SDR 3D LUT and some normal ones like adobeRGB but i guessed this would do more harm then good.
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Old 15th April 2019, 19:53   #55743  |  Link
NM20
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Originally Posted by Klaus1189 View Post
Upload on external hoster such as Google drive or similar, other users like me cannot view them now, these are still pending.
Thanks. Links added to the original post.
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Old 15th April 2019, 19:57   #55744  |  Link
NM20
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Originally Posted by Warner306 View Post
You could improve a couple of things:

- Set the projector gamma to 2.20 to match madVR.
- Select BT.2020 in madVR, or DCI-P3 with report BT.2020 to display checked. I've read that JVC projectors need a BT.2020 flag to select the correct color profile.

Did you select 10-bits in madVR? If you aren't getting 10-bits in the OSD, try enabling fullscreen exclusive mode. The video output levels checkboxes in LAV Filters aren't relevant, so I wouldn't worry about them.

The link in my signature has more information on tone mapping. The links "HDR -> SDR: Toolkit" and "HDR -> SDR Instructions: Mapping wide color gamuts" are most relevant.
Thanks. I have added the images into the original link, so you will now get a better idea of the settings i am using. I will try the exclusive mode to see if that helps.
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Old 15th April 2019, 23:35   #55745  |  Link
mkohman
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Hi Guys,

A friend of mine has just setup madVR on his HTPC for HDR dynamic tone mapping etc.. He has an Epson 9300 which I believe is a 5040ub model. Can someone who has the Epson recommend which settings to choose on the projector please? Thank you so much
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Old 16th April 2019, 00:57   #55746  |  Link
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Originally Posted by zapatista View Post
i am trying to figure out if i can create a 3DLut file for my display without using a light meter

A synthetic lut would only be useful if the monitor is already extremely accurate in a preset colorspace.

This is NEVER the case. Even factory calibrated monitors will drift after 500-1000 hours. making the factory calibration worthless.

The factory calibrations will also not give you the maximum contrast ratio on the display, because you're fighting the preset whitepoint.

Using 3Dlut in general without at-least a colorimeter, is quite silly.

colormunki display or i1dpro, either one works great. It's worth everypenny, watching a movie without a 3DLut, You might as well stop, go outside and exercise, because movies look like crap without calibration.
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Old 16th April 2019, 12:45   #55747  |  Link
Warner306
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Originally Posted by NM20 View Post
Thanks. I have added the images into the original link, so you will now get a better idea of the settings i am using. I will try the exclusive mode to see if that helps.
I would try removing the 8-bit profile to ensure 10-bits is being selected in the control panel. After that, if neither windowed mode or fullscreen exclusive mode is giving you 10-bit output, you should try another driver.

What driver version are you using?
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Old 16th April 2019, 12:49   #55748  |  Link
Warner306
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Originally Posted by SirMaster View Post
Does anyone know if madVR tone-mapping handles HDR10+? Or should I avoid it and just stick with HDR10 for now. Would there even be a benefit to HDR10+ metadata over HDR10 for madVR's test builds with dynamic tone-mapping?
madVR can't yet use HDR10+ metadata. I doubt there would be much of a difference compared to creating similar metadata with madMeasureHDR. And the live tone mapping already produces results similar to madMeasureHDR. So they should all be quite similar.
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Old 16th April 2019, 13:03   #55749  |  Link
svengun
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Originally Posted by tp4tissue View Post
A synthetic lut would only be useful if the monitor is already extremely accurate in a preset colorspace.

colormunki display or i1dpro, either one works great. It's worth everypenny, watching a movie without a 3DLut, You might as well stop, go outside and exercise, because movies look like crap without calibration.

This is only for projector owners ? or would you state the same for a 55" OLED ?
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Old 16th April 2019, 14:51   #55750  |  Link
NM20
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Originally Posted by Warner306 View Post
I would try removing the 8-bit profile to ensure 10-bits is being selected in the control panel. After that, if neither windowed mode or fullscreen exclusive mode is giving you 10-bit output, you should try another driver.

What driver version are you using?
Thanks.

I am using the latest NVIDIA drivers, 417 maybe? I game on the PC too, so it needs to be the latest driver otherwise games don’t work.

Another issue I have noticed is my JVC projector had been on ‘standard’ for input level, I have changed it to ‘Auto’ that seems to have helped as the image was quite dark.

Last edited by NM20; 16th April 2019 at 14:53.
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Old 16th April 2019, 15:14   #55751  |  Link
Warner306
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I would guess that you need to use fullscreen exclusive mode for that driver to get 10-bit output.
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Old 16th April 2019, 15:36   #55752  |  Link
NM20
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I would guess that you need to use fullscreen exclusive mode for that driver to get 10-bit output.
Is that a checkbox in MadVR? Under the rendering section I think?
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Old 16th April 2019, 16:10   #55753  |  Link
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This is only for projector owners ? or would you state the same for a 55" OLED ?

If someone spends $2000 on an oled. what's another $150, $200 for a Colorimeter.


When they run out the panels at the factory, if they're tested/calibrated at all, they're hooked up to patch generators, Your pc is not a patch generator. You always need a calibration native to your hardware for accuracy.
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Old 16th April 2019, 19:45   #55754  |  Link
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Can anyone point me to some documentation on the NGU scaling settings? Just looking to tweak everything the best I can

Right now I'm running NGU Sharp (medium) + anti-ringing for luma, but am curious about how that compares to Anti-Alias. Thanks!
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Old 16th April 2019, 19:46   #55755  |  Link
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The only "advice" anyone can give you is to simply try it. Compare with your own eyes. No one is going to have the same viewing environment and preferences as you. You have to choose what looks "best" to your eyes.
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Old 17th April 2019, 00:02   #55756  |  Link
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^ The best response. You can't go wrong with anything NGU, do what you can to bump up luma quality to high if possible.
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Old 17th April 2019, 04:56   #55757  |  Link
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^ The best response. You can't go wrong with anything NGU, do what you can to bump up luma quality to high if possible.
IMHO, 3DLut's impact/difference far exceeds the benefit of NGU.

They're not mutually exclusive, but if someone had a choice between buying a new GPU, or a Colorimeter, I'd say Colorimeter first all the way.
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Old 17th April 2019, 05:21   #55758  |  Link
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^ The best response. You can't go wrong with anything NGU, do what you can to bump up luma quality to high if possible.
If the GPU can afford, which combination do you think will give a better image:
1.Chroma NGU AA High + Luma NGU Sharp High < SSIM 2D LL AR AB
2.Chroma Bicubic60 AR + Luma NGU Sharp VeryHigh < SSIM 1D LL AR AB

Thanks
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Old 17th April 2019, 06:52   #55759  |  Link
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For me 1) would be the easy choice. SSIM 2D is the superior of the two versions of SSIM.
If it affords you enough performance sacrificing AA chroma to medium or low to reach NGU sharp Very High may be worth it (Evaluate with your content to determine)
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Old 17th April 2019, 07:20   #55760  |  Link
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If your display can't operate in chroma 4:4:4 then option 2, otherwise 1.
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