madVR - high quality video renderer (GPU assisted)

[huhn]

not necessary in this case i would start with BT 709 and leave the gamut mapping to madVR but only if your device is really limited to bt 709 and not higher like 75%+ DCI p3.

[mclingo]

Hi, when I say correct results I guess I mean I get the expected results in that if my brightness and gamma are at default values on my TV the picture should not be crushed or washed out.

However, if we take the SDR black clipping pattern, I still think there is something wrong here. From memory the only way I could determine if BTB was being preserved was to push the brightness up a few notches and more bars appear, you'd have flashing bars all the way along like this:

BTB full range preserved (after increasing brightness)

https://1drv.ms/u/s!AgvFafeelEBilKN5...zSFYg?e=QEgoYi


if they dont and the blacks all turn grey it suggest you're not getting BTW, is this right?


Washed out (after increasing brightness)

https://1drv.ms/u/s!AgvFafeelEBilKQc...mFwbg?e=3Ou1i8

Correct pattern

https://1drv.ms/u/s!AgvFafeelEBilKN6...aisgw?e=15wmad

[Damien147]

Originally Posted by huhn

not necessary in this case i would start with BT 709 and leave the gamut mapping to madVR but only if your device is really limited to bt 709 and not higher like 75%+ DCI p3.

For the calibration tab first I will create a BT 709 3dlut with bt.1886 gamma for SDR.You mean to use the same one?
I've read in the past that I need 2.2 gamma and that's why the BT.2020 3DLUT in the calibration tab.Am I right?

[huhn]

you can use profile instead.
and yes for tonemapping it should be gamma 2.2.

EDIT: i replaced the bt 709 with gamma 2.2 because bt 709 makes no sense.

[oldpainlesskodi]

@mclingo - who said number 3 is correct?, because in those shots, pretty sure in a dark room number 1 looks right to me.

Have you checked the APL Clipping test file?

Unless I've lost the plot lol.

[QBhd]

OMG... that 3rd image is so far off it must be terrible to watch content on. Also, why the focus on BTB/WTW? What content are you watching that needs this?

QB

[Damien147]

Originally Posted by huhn

you can use profile instead.

Profile?I don't get you.

Originally Posted by huhn

and yes for tonemapping it should be bt 709

I understand a BT.709 for all but as I said the one for sdr is gonna be bt.1886 and I need another one for 2.2 gamma.Is it wrong to create another one with bt.2020 and 2.2 gamma for tomemapping?

[huhn]

sorry for tone mapping it should gamma 2.2 not any BT what ever. i will edit the post so no one that reads it and not this one will get the wrong idea sorry about that.

with profiles you can do a simple check if the source is HDR it will use a gamma 2.2 3D LUT without HDR it will use what ever gamma you like 3D LUT.

[mclingo]

Originally Posted by oldpainlesskodi

@mclingo - who said number 3 is correct?, because in those shots, pretty sure in a dark room number 1 looks right to me.

Have you checked the APL Clipping test file?

Unless I've lost the plot lol.

They all work mate and you can make them all look ok depending on your brightness and gamma settings but if your process flow has to convert from limited to full and back again it degrades the picture slightly each time, now whether this will be noticeable to the human eye these days is another matter with high res screens but I prefer to keep my processing path clean and free from unnecessary conversions.

[theDongerr]

Originally Posted by Asmodian

How strange, I double checked and I really am using 445.75, Windows 1909 build 18363.752.

Edit: madVR 0.92.17, passthrough HDR to display, D3D11 fullscreen windowed (8 bit). 2080 Ti set to output 60Hz YUV 444 limited 8 bit to the C9.

Hello! Apologies in advance, I have recently upgraded/reinstalled my HTPC and trying to put madVR back together. Haven't had to think about these settings in a quite a while, but at one point I was experimenting with outputting 24hz materials at 60hz in as smooth a manner as possible for both 1080p and 2160p content.

I notice that you are outputting 60hz YUV 444. Are you playing 24hz material at 60hz and can I ask how you accomplish this?

I currently playback all content at its native rate 24hz (or otherwise) MadVr Limited -> HTPC 24hz RGB Full 8-bit -> RS600 Limited. Also worth noting I use madvr to perform dynamic tonemapping for HDR content.

Thank you for your contributions to this thread!

[Asmodian]

I used madVR's smooth motion to watch 24Hz material at 60Hz.

[theDongerr]

Originally Posted by Asmodian

I used madVR's smooth motion to watch 24Hz material at 60Hz.

Really appreciate the snap response!! Should be easy enough to try this out again.

I was doing the same thing a few years back and I think I was watching one of the Star Wars prequels at 60hz + smooth motion that made me go back to native 24hz.

Do some films just respond better to being presented at 60hz than others? The movie was a 1:1 blu-ray rip upscaled to 2160p 60hz with smooth motion.

[Asmodian]

Smooth motion is not for everyone, I have an OLED where I like smooth motion but it is theoretically less ideal than a perfectly matched refresh rate.

For me, switching refresh rates every time I start a video and trying to tune custom refresh rates simply isn't worth it. I like the look of smooth motion and it is very robust so it seems like the best option to me.

Now that I can run 120 Hz using smooth motion is not even a question for me anymore (always).

[Damien147]

Originally Posted by huhn

sorry for tone mapping it should gamma 2.2 not any BT what ever. i will edit the post so no one that reads it and not this one will get the wrong idea sorry about that.

with profiles you can do a simple check if the source is HDR it will use a gamma 2.2 3D LUT without HDR it will use what ever gamma you like 3D LUT.

I lack knowledge about the profiles you mention and don't know what to do.I don't understand how to do that.
First for the calibration tab I create a BT.709 3DLUT with bt.1886 for SDR.Then what do I do to achieve tone mapping with Madvr(pixel shaders) on my bt.709 TV?

[huhn]

right click on your TV/AVR name -> create profile group with calibration only -> profile 1 "duplicate profile" -> name one SDR one HDR -> click on "Profile Group 1" - add in profile auto select rules:

if (HDR = true) "HDR"
else "SDR"

load the SDR 3D LUT in SDR and the 2.2 in HDR.

BTW. why bt 1886?

[*MidnightWatcher*]

Question - I've decided to set up a few different HDR profiles to toggle between different contrast recovery settings. I've set up Ctrl+C in the profile group name as the keyboard shortcut but for some reason pressing Ctrl+C does nothing and I'm unable to toggle between them. Do I need to set up auto select rules for toggling to work?

[stefanelli73]

Originally Posted by huhn

yes you are using AMD it can't send bt 2020 out side of HDR. AMD can't report anything else.

So basically with AMD cards using Madvr tone mapping, I will always see with BT.709 color space, despite having loaded a 3dlut in SDR DCI-P3 is that you saying?

[huhn]

the slot has nothing to do with it AMD can tell the screen to switch to BT 2020 (or better it doesn't work)so either you manual change the color space on the TV which is generally fine. if you don't need BT 709 for your desktop and your device can do it.

@*MidnightWatcher*

i don't use profiles personally i know you can toggle through them if they all of the same hot key so try to give the profile itself the hotkey.

and control+c could be used (alot is used...).

[jkauff]

Originally Posted by *MidnightWatcher*

I've set up Ctrl+C in the profile group name as the keyboard shortcut but for some reason pressing Ctrl+C does nothing and I'm unable to toggle between them. Do I need to set up auto select rules for toggling to work?

Try a different key combination. Windows reserves Ctrl+C for the "copy" part of cut, copy, paste operations. You can't override that.

[stefanelli73]

Originally Posted by huhn

the slot has nothing to do with it AMD can tell the screen to switch to BT 2020 (or better it doesn't work)so either you manual change the color space on the TV which is generally fine. if you don't need BT 709 for your desktop and your device can do it.

The problem is precisely that with my projector a BENQ 5700 I can get the BT.2020 color space, only if it locks a signal in HDR, otherwise always in BT.709, unfortunately it does not act in the same way as SONY or JVC projectors where you can choose either one or the other