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Old 3rd December 2018, 21:55   #53801  |  Link
actarusfleed
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Calibration with LUT

Hi all,
in the past days I've tested madvr's "tone map hdr using pixel shaders" and the result was very impressive on my sony 4K projector.

My settings in madvr were:
target peak nits= 250
Tone mapping curve = BT2390
color tweaks for fire & exp. = balanced
high recovery strenght= none

On my projector I've chosen widest gamut and a gamma curve of 2.4.

Now I want to start some calibration testing with LUT to reproduce better my UHD files.

Normally I use LightSpace to generate Luts.

My questions are:
1) I need to create a Lut targeting to rec.2020 or DCIP3 ?
2) The gamma curve of this lut must be BT.2390 or a classic power curve 2.4 ?

thank you so much.
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Old 3rd December 2018, 22:37   #53802  |  Link
Ampallang
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@actarusfleed I would try dci-p3 I can only remember 1 film which is mastered to bt.2020 targets.
When you use LightSpace you can make also the tonemapping via LightSpace. I have very good experience using the LightSpace tonemapping function into lut and save Hugh resources on processing and render times.
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Old 3rd December 2018, 22:46   #53803  |  Link
actarusfleed
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Quote:
Originally Posted by Ampallang View Post
When you use LightSpace you can make also the tonemapping via LightSpace. I have very good experience using the LightSpace tonemapping function into lut and save Hugh resources on processing and render times.
In which way I can do correctly this?
You mean pointing the lut to bt. 2390?

If we are off topic here please send me a Pm.

Thsnks



Inviato dal mio SM-N960F utilizzando Tapatalk
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Old 3rd December 2018, 22:56   #53804  |  Link
actarusfleed
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Quote:
Originally Posted by Ampallang View Post
@actarusfleed I would try dci-p3 I can only remember 1 film which is mastered to bt.2020 targets.
Madvr reports if an uhd files is mastered to bt. 2020 targets ?

If I use ctrl+j I can se that madvr tell me a lot of things about the reproduced files...
All my files are:

Matrix bt. 2020 (says upstream)
Primaries bt. 2020 (says upstream)
HDR xxx nit, Bt. 2020 - > Dci P3


Maybe last string tells me that the original gamut is Dci p3?

Let me know, please

Inviato dal mio SM-N960F utilizzando Tapatalk
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Old 3rd December 2018, 23:43   #53805  |  Link
jj666
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Hi all,

I am using an ASUS PA32U monitor in conjunction with madVR 0.92.17/Lavfilters/MPC-HC and 2 x Nvidia FX1080 cards for display.

It seems that Nvidia drivers 416.81 are the last working (tried 416.94, 417.01 and new 417.22) drivers which actually trigger the HDR mode automatically in the monitor. Is anyone else having the same experience, or can advise on any tips to make playback work? I have as usual made a clean install of the drivers in each case.

Cheers,

-jj-
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Old 4th December 2018, 00:10   #53806  |  Link
Warner306
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Quote:
Originally Posted by actarusfleed View Post
Hi all,
in the past days I've tested madvr's "tone map hdr using pixel shaders" and the result was very impressive on my sony 4K projector.

My settings in madvr were:
target peak nits= 250
Tone mapping curve = BT2390
color tweaks for fire & exp. = balanced
high recovery strenght= none

On my projector I've chosen widest gamut and a gamma curve of 2.4.

Now I want to start some calibration testing with LUT to reproduce better my UHD files.

Normally I use LightSpace to generate Luts.

My questions are:
1) I need to create a Lut targeting to rec.2020 or DCIP3 ?
2) The gamma curve of this lut must be BT.2390 or a classic power curve 2.4 ?

thank you so much.
If you are using pixel shaders, the LUT should be SDR and not PQ.

DisplayCAL recommends DCI-P3 and pure power 2.20. You could also try 2.40.
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Old 4th December 2018, 00:51   #53807  |  Link
j82k
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Quote:
Originally Posted by jj666 View Post
It seems that Nvidia drivers 416.81 are the last working (tried 416.94, 417.01 and new 417.22) drivers which actually trigger the HDR mode automatically in the monitor.
Same here, seems like nvidia only releases working drivers when madshi tells them about it and then the next driver is broken again. Really frustrating when you also use your GPU for games.
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Old 4th December 2018, 02:09   #53808  |  Link
ryrynz
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Dual boot. One OS for HTPC and one for games. It's really the only logical way to deal with this ongoing and likely never ending driver nightmare.
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Old 4th December 2018, 06:58   #53809  |  Link
jj666
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Thanks a lot for the info guys! Indeed, what a pain in the ass...

Cheers,

-jj-
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Old 4th December 2018, 07:50   #53810  |  Link
Q-the-STORM
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Quote:
Originally Posted by ryrynz View Post
Dual boot. One OS for HTPC and one for games. It's really the only logical way to deal with this ongoing and likely never ending driver nightmare.
This is what I'm going to do now, getting a bit tired of win10 updates or nvidia driver updates messing stuff up, so I'm gonna install Win8.1 as well.

What's the latest nvidia driver recommended for win8.1 with a 1080 ti? (I need 2160p23 4:4:4 10/12bit custom resolution and HDR.)

Last edited by Q-the-STORM; 4th December 2018 at 08:01.
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Old 4th December 2018, 14:22   #53811  |  Link
SirSwede
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Questions:

If you buy a Asus GeForce GTX 1080 Turbo 2xHDMI 2xDP 8GB and are going to use it to upscale 540p and 720p to 2160p, what is the weakest/cheapest motherboard, PSU, processor and least amount of RAM you can get away with (using MPC-HC, LAV Filters, nVidia Cuvid and madVR)?

Or is the Asus GeForce GTX 1070 Ti Cerberus Advanced 2xHDMI 2xDP 8GB better?

What's the difference between a "Ti" and one without the "Ti"?



PS. I am thinking about going with this one and not build one after all (how does this one look): https://www.elgiganten.se/product/da..._PRISJAKT_EGAB

Last edited by SirSwede; 4th December 2018 at 14:54. Reason: Added PC example
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Old 4th December 2018, 15:22   #53812  |  Link
SirSwede
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By the way: I heard that W7 is not compatible with Coffe Lake. Can anyone tell me if W8.1 is?
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Old 4th December 2018, 15:54   #53813  |  Link
brazen1
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Quote:
Originally Posted by jj666 View Post
Hi all,

I am using an ASUS PA32U monitor in conjunction with madVR 0.92.17/Lavfilters/MPC-HC and 2 x Nvidia FX1080 cards for display.

It seems that Nvidia drivers 416.81 are the last working (tried 416.94, 417.01 and new 417.22) drivers which actually trigger the HDR mode automatically in the monitor. Is anyone else having the same experience, or can advise on any tips to make playback work? I have as usual made a clean install of the drivers in each case.

Cheers,

-jj-
Don't want to go OT in this madVR thread too much but you are correct. All 3 of the latest drivers have HDR mode switching problems of one sort or another. Some players do switch and others don't. I use a lot of different players. The last driver that switches all of them is 416.81. Still, that driver (and all the drivers since 388.59) have a specific audio bug related with Windows 10 auto switching. I've been editing the installer to use the HD Audio driver from 388.59 as a workaround. I doubt your specific monitor has anything to do with the equation. Why are you using 2 video cards? I tried in the past and madVR did not support SLI afaik.
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HOW TO-Kodi 2D-3D-UHD (4k) HDR Guide Internal & External Players
W10 1903 9604GB RGB 4:4:4 @Matched Refresh Rates 8,10,12bit
KODI MPC-HC/BE PDVD19 DVDFab 3 & 5
65JS8500 UHD HDR 3D
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Old 4th December 2018, 20:05   #53814  |  Link
ajp_anton
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Feature request:

- Move active image to the top of the screen.
Why? To minimize overlap between subtitles (that are moved down into the black bar) and the image.

- Allow subtitles to span wider than the active image, when there are black bars on left/right (instead of top/bottom). Right now, when watching 4:3 content, some very long subtitle lines are split into two, sometimes making 2-line subtitles into 4-line ones.
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Old 4th December 2018, 20:41   #53815  |  Link
ashlar42
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Quote:
Originally Posted by brazen1 View Post
Still, that driver (and all the drivers since 388.59) have a specific audio bug related with Windows 10 auto switching. I've been editing the installer to use the HD Audio driver from 388.59 as a workaround.
Couldn't you install 388.59 fully and then custom install the newer drivers, deselecting the audio driver?
Or is that what you mean by "editing the installer"?
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Old 4th December 2018, 20:54   #53816  |  Link
brazen1
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No. If you deselect part of a driver from an installation package (audio in this case), the old driver is removed during the install process and then you are left with nothing. Editing the driver install package to swap drivers around is too OT for this forum but I have explained in detail how to do it in the link in my sig. It may not even apply to you but it does me for a couple major issues. Mainly AAC audio common in HEVC x265 rips and internet video behavior (such as youtube) depending on state of AVR on/off.
__________________
HOW TO-Kodi 2D-3D-UHD (4k) HDR Guide Internal & External Players
W10 1903 9604GB RGB 4:4:4 @Matched Refresh Rates 8,10,12bit
KODI MPC-HC/BE PDVD19 DVDFab 3 & 5
65JS8500 UHD HDR 3D
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Old 4th December 2018, 21:15   #53817  |  Link
jj666
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Quote:
Originally Posted by brazen1 View Post
Don't want to go OT in this madVR thread too much but you are correct. All 3 of the latest drivers have HDR mode switching problems of one sort or another. Some players do switch and others don't. I use a lot of different players. The last driver that switches all of them is 416.81. Still, that driver (and all the drivers since 388.59) have a specific audio bug related with Windows 10 auto switching. I've been editing the installer to use the HD Audio driver from 388.59 as a workaround. I doubt your specific monitor has anything to do with the equation. Why are you using 2 video cards? I tried in the past and madVR did not support SLI afaik.
Thanks all for the information, I will keep my eye on the thread in case a further driver release does "everything" then :-).

Reason for the two graphics cards is that I occasionally use the machine for gaming (and in the past also made use for Boinc distributed computer).

Cheers,

-jj-
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Old 4th December 2018, 21:35   #53818  |  Link
ryrynz
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Quote:
Originally Posted by SirSwede View Post
By the way: I heard that W7 is not compatible with Coffee Lake. Can anyone tell me if W8.1 is?
It's not that it's not compatible, it's just not supported..
There's zero compatibility issues with 8.1, you're better off with this OS anyway but you can try 7 with Coffee Lake, will probably work just fine.
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Old 4th December 2018, 22:25   #53819  |  Link
nevcairiel
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Originally Posted by ryrynz View Post
It's not that it's not compatible, it's just not supported..
There's zero compatibility issues with 8.1, you're better off with this OS anyway but you can try 7 with Coffee Lake, will probably work just fine.
It may not be a "compatibility" issue as such, but Microsoft has stopped offering you Windows Updates if you use an unsupported CPU. So if you run such a CPU, its really unwise to stick to that OS. An unpatched OS is a bad idea.
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Old 4th December 2018, 22:38   #53820  |  Link
actarusfleed
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MadVR settings for 2.35:1 screens

Hi guys,
I own a 4K projector and a Panoramic screen (2.35:1 format).

I use my HTPC (nvidia gtx 970, Win 10) with Kodi +DSplayer with MadVR.

I need to inscribe the image in my screen.
Using resize function into Nvidia control panel I've resized the OS desktop to 3840x1662 px and now it's ok.

If I execute Kodi I can see it perfectly inscribed into my screen.

The problem starts when I execute a film ... Madvr infacts compress the image ratio.

So I've setted MadVr in this way:
> Automatically detect hard coded black bars
> crop black bars.

Now I'm playing some 2.35:1 film but the result is not right.

Can some one suggest me righty settings?

thank you
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