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Old 5th March 2020, 08:08   #58821  |  Link
Alexkral
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Actually, there is no way to know what is the proper way to correct the color when tone mapping, because there is not a linear relationship between both things. Even color appearance models fail in studies because they have not been developed for HDR. For example, the ICtCp color space that madVR uses, is perceptually uniform up to aproximately 500 nits, but anything beyond can be completely wrong.

So in the case of madVR/BT.2390 tone mapping, when the color is corrected following a linear relationship with the luminance compression, you end up with values ​​that are very out of gamut (I'm talking about values ​​of 5 and more for a [0,1] range). These values ​​need to be strongly mapped later within the gamut, which defeats the purpose of the logic that has been followed previously for the saturation correction (which was wrong anyway).

So don't expect a 3DLut to do any magic with the color of the highlights, because at this time it is not possible to know for sure how it should be represented in a lower dynamic range. Lately, some color appearance models have been developed for HDR, but the result also doesn't seem to be too convincing.
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Old 5th March 2020, 15:13   #58822  |  Link
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I didn't say 3DLut will give you total accuracy, 3DLut gives Madvr a MAP. WIthout which Madvr is completely blind.

Whatever future models come out, if you have a map, you can do the best calculations, without the map, it's all throwing darts again.
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Old 5th March 2020, 16:02   #58823  |  Link
chros
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Quote:
Originally Posted by tp4tissue View Post
3DLut gives Madvr a MAP. WIthout which Madvr is completely blind.
This doesn't have to do anything what @Alexkral said.
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Old 5th March 2020, 16:52   #58824  |  Link
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Did you already stop developing Madvr? No update for many months.
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Old 5th March 2020, 17:21   #58825  |  Link
onekmilesbehind
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Please read through the thread a bit. People have erroneously proclaimed this many times already, but that's no excuse to continue the trend.

Read back a few pages and you'll find info. Searching is not hard and you're more likely to get responsive answers if it's evident you've already put in some footwork.
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Old 5th March 2020, 23:40   #58826  |  Link
tp4tissue
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Originally Posted by chros View Post
This doesn't have to do anything what @Alexkral said.
Yes it does, akral is saying you can't directly map hdr using the tonemapping.

I'm saying, regardless of how we map, we still need a map. It's perfectly relevant.
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Old 6th March 2020, 17:58   #58827  |  Link
SirMaster
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Originally Posted by mickeekung View Post
Did you already stop developing Madvr? No update for many months.
It's misleading.

madshi has put out a little over 113 updates to madVR since the official release you see on his website.

The most recent release was on Jan 20, 2020.

He has been working on bringing madVR to a dedicated hardware box a lot lately as well.

So no he did not stop and no signs of stopping.
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Old 7th March 2020, 15:34   #58828  |  Link
gfxnow
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Quote:
Originally Posted by SirMaster View Post
It's misleading.

madshi has put out a little over 113 updates to madVR since the official release you see on his website.

The most recent release was on Jan 20, 2020.

He has been working on bringing madVR to a dedicated hardware box a lot lately as well.

So no he did not stop and no signs of stopping.
Are there any builds with those updates?
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Old 7th March 2020, 21:15   #58829  |  Link
huhn
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sure all 113 are builds here is 113:
http://madshi.net/madVRhdrMeasure113.zip

beware that these are test builds this one has a major know issues.
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Old 7th March 2020, 21:18   #58830  |  Link
ryrynz
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Quote:
Originally Posted by gfxnow View Post
Are there any builds with those updates?
As above. You didn't need to quote that entire post or any of it really, anyone can answer this. The link has been posted many times you could've found it by searching.

Last edited by ryrynz; 7th March 2020 at 21:23.
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Old 8th March 2020, 00:47   #58831  |  Link
tp4tissue
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Quote:
Originally Posted by huhn View Post
sure all 113 are builds here is 113:
http://madshi.net/madVRhdrMeasure113.zip

beware that these are test builds this one has a major know issues.
The broken smooth frame function? Pretty sure most users don't even know what that does.
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Old 8th March 2020, 14:01   #58832  |  Link
NM20
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I am getting a weird issue where I get a horizontal line across the whole screen during any movement. I use MadVR through MpC- HC.

I play .mkv and it has happened on two separate films, but the line was in different positions. One a third down from the top, one across the middle. It looks a little like screen tearing when playing a game.

Could this be due to an NVIDIA control panel setting? If so, which one.

Edit: I have solved the issue by doing a reset of the NVIDIA Control panel settings.

Last edited by NM20; 8th March 2020 at 14:21.
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Old 8th March 2020, 23:13   #58833  |  Link
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Is there a way to change the madvr settings through a phone while a movie is playing? I see there's a option to enable lan access but not sure what that does.
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Old 9th March 2020, 11:56   #58834  |  Link
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Can we do 8x upscaling (4x doubling, 2x quadroupling) with madvr? If so, how? (e.g. for ~512px wide videos on 4k screen)
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Old 9th March 2020, 16:30   #58835  |  Link
SirMaster
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Quote:
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Is there a way to change the madvr settings through a phone while a movie is playing? I see there's a option to enable lan access but not sure what that does.
Not inherently.

I made a program that makes this possible though if you were really interested in it.

Essentially you could switch madVR profiles from your phone. So you can't just change any settings you want, but you can set up as many profiles as you want on madVR and switch between them from your phone.

Last edited by SirMaster; 10th March 2020 at 18:00.
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Old 9th March 2020, 20:21   #58836  |  Link
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Quote:
Originally Posted by SirMaster View Post
I made a program that makes this possible though if you were really interested in it.

Essentially you could switch madVR profiles from your phone. So you can;t just change any settings you want, but you can set up as many profiels as you want on madVR and switch between them from your phone.
I did exactly the same in html / javascript, it requires mpc-be/hc and keyboard shortcuts set up in madvr.
Upload yours, I'll be interested in it. I can do the same...
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Old 10th March 2020, 01:58   #58837  |  Link
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Quote:
Originally Posted by chros View Post
Can we do 8x upscaling (4x doubling, 2x quadroupling) with madvr? If so, how? (e.g. for ~512px wide videos on 4k screen)
What does it do in that case if you choose "let madVR decide" under "if any more upscaling needs to be done"?
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Old 10th March 2020, 14:53   #58838  |  Link
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Is there a way to force downscaling first, THEN upscale to soften the image ?
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Old 10th March 2020, 15:49   #58839  |  Link
menac1ty
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I have a GTX 970 G1 from Gigabyte, when I overclock it, it's dead stable in every game or benchmark that is 100% load. But when I'm watching movies using madVr, despite only being used 50-65% with even low temps, it crashes my system and is not stable. Has anyone experienced this?
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Old 10th March 2020, 16:26   #58840  |  Link
tp4tissue
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Originally Posted by menac1ty View Post
I have a GTX 970 G1 from Gigabyte, when I overclock it, it's dead stable in every game or benchmark that is 100% load. But when I'm watching movies using madVr, despite only being used 50-65% with even low temps, it crashes my system and is not stable. Has anyone experienced this?
If it's h265, it may be due to avx

The 970 does not have h265 decode block. only the 960gtx does.

You're on CPU decode, if you use the 64bit version of MPCHC, it uses AVX code path.

Your CPU settings are not AVX Stable.

Use either the 32Bit version of MPCHC, or push the voltage up on your CPU until you're avx-stable.
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