madVR - high quality video renderer (GPU assisted)

[Charky]

Hi. After just upgrading to the latest Nvidia drivers (after being stuck at 385.28 forever), I've been unable to get HDR working satisfactorily in fullscreen mode in either Potplayer or MPC-HC, despite working perfectly in (non-fullscreen) windowed mode in both players.

MPC-HC exhibits the most curious behaviour, as HDR will enable if I move the mouse on to the screen, or let the control panel appear at the bottom; once I hide the panel/mouse, HDR disables again.

Potplayer gets stuck in a perpetual loop once entering fullscreen mode, making viewing the content unwatchable.

I've tried with and without the "enable automatic fullscreen exclusive mode" options (the above is the behaviour without it set). The behaviour differs slightly when enabled, with MPC-HC behaving as Potplayer does as described above.

I'm using the latest MadVR with Nvidia 430.86 drivers for my 1060 6GB card, and an LG B7 TV.

Thoughts? TIA.
If it works with 385.28, why don't you stick to it ?

[distobj]

If it works with 385.28, why don't you stick to it ?

Games. World War Z crashes on it, and Nvidia Experience stopped working several weeks ago.

[garson]

is this screen pause? the OSD show very odd numbers.
Yes, it is paused.
I will take another screenshot with movie playing.

[Charky]

Games. World War Z crashes on it, and Nvidia Experience stopped working several weeks ago.
Oh, I understand :)

Just in case you can't figure out how to make everything work with the same drivers (and we all agree that would be the ideal scenario), dual boot might be an option. Sometimes it's easier to keep two completely separated Windows setups for different uses. I tried for hours to make a single setup work with both my LG C8 TV and Sony projector. With a dual boot and two separate Windows installs, it took me under an hour to achieve that...

Just my two cents :)

[nussman]

I think most people with overclocked 2-series and above i7 can push 4K on CPU if they know what they're doing, leaving GPU just for scaling..
No need to push "4k on CPU", because decoding is not done by gpu shader ...

[SirMaster]

Is there any way with madVR to crop the edges off a video without causing madVR to zoom the resulting crop to the screen edge? Does that make sense?

I am using a projector with an anamorpic lens and the image spills off the screen, I just want to crop off some of the video with black and the projector being used doesn't have this option, so I was hoping madVR could do it.

[hotripper]

I am still experiencing mini stutters with my RTX 2080 after going to 430.86 and using the nvidia profile.
Can any RTX user confirm they have solved it?

Im on previous driver. Still stutters. Will try latest now. Im certain there will not be any difference. Eventually stutters always return after a fresh install. Wonder what the major issue is, I dont think it is just madvr as I get stutters with EVR as well

[garson]

is this screen pause? the OSD show very odd numbers.
Here's new screenshot, while movie is playing.

:thanks:

https://i.ibb.co/Xx6Cx2Y/sreenshot.jpg (https://ibb.co/Xx6Cx2Y)

[Asmodian]

I am using a projector with an anamorpic lens and the image spills off the screen, I just want to crop off some of the video with black and the projector being used doesn't have this option, so I was hoping madVR could do it.

If you configure your display as a projector, under devices, you can define a visible screen area to remove the spill over. It seems like you must already be using this if you are using an anamorphic lens, is there a reason you do not want to define the visible screen area?

[grendelrt]

I have noticed the same issue recently. Yes it should work as a toggle. I haven't had a chance to debug it, but it definitely doesn't work as it should. It could be a change in madVR, as I haven't changed the OS or GPU driver (I'm testing 430.86 at the moment but I get this issue with 385.28 to).

Please could you report:

GPU & driver version
OS version and build
madVR version

Anyone else noticed this?

I tried 430.86 and 430.39
Windows 10 1809
Madvr build 78 I want to say

[SirMaster]

If you configure your display as a projector, under devices, you can define a visible screen area to remove the spill over. It seems like you must already be using this if you are using an anamorphic lens, is there a reason you do not want to define the visible screen area?

Thanks for your assistance!

I feel like I have tried the right option, but I don't know how to describe what's not seemingly working correctly. So instead I have taken a video.

Hopefully you can see what's going on.

So essentially, the video spills over the left and right sides of the screen. I want to simply crop in the sides so that black is spilling over the sides rather than image data, because it's a very bright laser projector and you can see the spill even over black velvet.

When I use the "define visible screen area by cropping masked borders" it does bring in the sides, but all it's doing is shrinking the entire video, and that is also affecting the top and bottom of the image as well. It seems to be maintaining the aspect ratio, when what I want is to crop in the sides only, therefore changing the aspect ratio.

The video shouldn't change size at all, all that should happen is the spill over on the sides should be black rather than be active video.

At least that's what I want to do. Not sure how to make that happen but I feel like there should be a way. Normally I would use a feature on the projector itself called masking, but this projector has no masking option.

https://youtu.be/nL9pcxm9phM

[Asmodian]

Ah, yes. Unfortunately madVR does not have a manual crop option, it can only remove black bars or crop up to 7 lines from all sides. :(

[Siso]

Ah, yes. Unfortunately madVR does not have a manual crop option, it can only remove black bars or crop up to 7 lines from all sides. :(

Manual crop would be a good feature :)

[elraffa]

I tried 430.86 and 430.39

Windows 10 1809

Madvr build 78 I want to saydoes 0.92.17 the last madvr version? where can I download new builds?

Enviado desde mi Redmi Note 6 Pro mediante Tapatalk

[ryrynz]

You don't want the new builds, they're for testing HDR to SDR conversion, a final isn't that far off just grab 0.92.17.

[Warner306]

Thanks for your assistance!

I feel like I have tried the right option, but I don't know how to describe what's not seemingly working correctly. So instead I have taken a video.

Hopefully you can see what's going on.

So essentially, the video spills over the left and right sides of the screen. I want to simply crop in the sides so that black is spilling over the sides rather than image data, because it's a very bright laser projector and you can see the spill even over black velvet.

When I use the "define visible screen area by cropping masked borders" it does bring in the sides, but all it's doing is shrinking the entire video, and that is also affecting the top and bottom of the image as well. It seems to be maintaining the aspect ratio, when what I want is to crop in the sides only, therefore changing the aspect ratio.

The video shouldn't change size at all, all that should happen is the spill over on the sides should be black rather than be active video.

At least that's what I want to do. Not sure how to make that happen but I feel like there should be a way. Normally I would use a feature on the projector itself called masking, but this projector has no masking option.

https://youtu.be/nL9pcxm9phM

Isn't it correct for a 2.40:1 movie to have black bars when shown on a 2.35:1 screen? Otherwise, you would lose image data.

Edit: I think the only possible solution I can think of is to set up a 2.35:1 profile in screen config with the top and bottom of the image cropped to get a 2.35:1 aspect ratio and then check zoom big black bars away to see if the 2.40:1 movie (I assume that is Lucy on UHD Blu-ray) is zoomed beyond the borders of the media player window with some cropping at the screen edges.

[bcec]

@madshi:

there's been an influx of 4k remasters with teal+orange color grading that looks awful. do you think it would ever be possible to add something like a de-teal/orange at all?

[huhn]

Here's new screenshot, while movie is playing.

i can't see anything odd except for the decoder queue it higher then it should be.
the issue could even be the file it self.

[tp4tissue]

@madshi:

there's been an influx of 4k remasters with teal+orange color grading that looks awful. do you think it would ever be possible to add something like a de-teal/orange at all?

Could you list some examples of teal/orange movies?

[garson]

i can't see anything odd except for the decoder queue it higher then it should be.
the issue could even be the file it self.

Thanks huhn.
Anything I can do to change/fix this (decoder queue being high)? This is CPU queue size in madvr general settings, right?
Default is 12, I increased it to 16 (saw some recommendations).

[Siso]

Thanks huhn.
Anything I can do to change/fix this (decoder queue being high)? This is CPU queue size in madvr general settings, right?
Default is 12, I increased it to 16 (saw some recommendations).

CPU queue is 16 by default :)

[garson]

CPU queue is 16 by default :)
Oh, ok.
I am gonna try to increase it a bit and see how it goes.

[tp4tissue]

@garson,

is there a reason you're watching a 720p file ? is that just for testing ?

Scaling 720p to 1080p results in far worse quality and more gpu use than simply watching a 1080p file.

[SirMaster]

Isn't it correct for a 2.40:1 movie to have black bars when shown on a 2.35:1 screen? Otherwise, you would lose image data.

Edit: I think the only possible solution I can think of is to set up a 2.35:1 profile in screen config with the top and bottom of the image cropped to get a 2.35:1 aspect ratio and then check zoom big black bars away to see if the 2.40:1 movie (I assume that is Lucy on UHD Blu-ray) is zoomed beyond the borders of the media player window with some cropping at the screen edges.

So he is using an anamorphic lens. The lens stretches the image out horizontally to fill out the screen. It's a rather large 15ft wide screen.

The projector is doing the vertical stretch. We don't use madvR to do the stretch for other reasons. (rendering times go from 30ms to 300ms when we enable anamorphic stretch in madVR due to how the image and chroma scaling compound or something like that.)

His screen is 2.37:1 and the movie is 2.40:1.

What he normally does, is zooms the projector so that the narrowest movies (2.40:1) fill the screen vertically, and then that means they overshoot the sides by a bit. This also means that 2.35:1 movies will overshoot all 4 sides. Normally with a decent projector this isn't a problem since they offer image masking, and you just mask off the 4 sides of the projector's image to fit your screen perfectly. This is what he did on his previous JVC RS600.

However, he just got a BenQ LK970 laser projector that does not have this masking option.

I think another issue is that his anamorphic lens is not perfect and it stretches the image horizontally slightly more than it should. So the issue is that if he wants to fill his screen vertically, the image will always overshoot his screen horizontally. This is why we need to cover some of the projector's image with black essentially so that the overshoot is invisible.

I am trying to understand your edited response, but I will have to think about it some more. Maybe my latest reply here sheds some more light on the set up and what we are trying to achieve.

Recap:

2.40 movie, stretched vertically by the projector to fill the projector's full 16:9 panel. Projector stretch is a 2.35:1 -> 16:9 stretch, so there is still a small black edge on the top and bottom of the projector's 16:9 panel after it vertically stretches 2.35:1 -> 16:9, because the movie is 2.40:1.

Projector is lens zoomed to make the 2.40:1 image fill the 2.37:1 screen vertically. This leaves a horizontal picture overshoot due to 2 factors. 1, because 2.40:1 is a wider aspect ratio than his screen, and 2, because his anamorphic horizontal stretch lens is not perfect and stretches the image slightly too far.

What we need to do in some way is to take a 2.40:1 movie and essentially crop off the sides a bit to make it a narrower aspect ratio. In truth we would also probably crop the top and bottom a little bit too, but again this is a crop that really is just trimming off some of the image data turning it into black, hopefully no zooming or scaling should be taking place or else that just messes it all up again.

So if you viewed this on a normal monitor, it would look like the video does not fill all the way to the edge of the screen, but it's not shrunk so scaling is not affected, it's just covered up by black. Need to render a black border over the top of the video to cover up some of the video on the sides and a little bit on the top and bottom too ideally.

[Asmodian]

Is it a really weak GPU or using crazy upscaling settings? 300ms is way too high for reasonable settings on even a low end dGPU.

madVR cannot do this, you need a manual crop option and madVR is designed assuming you are not willing to lose more than 7 lines of the image off all sides under any circumstances.

[Warner306]

So he is using an anamorphic lens. The lens stretches the image out horizontally to fill out the screen. It's a rather large 15ft wide screen.

The projector is doing the vertical stretch. We don't use madvR to do the stretch for other reasons. (rendering times go from 30ms to 300ms when we enable anamorphic stretch in madVR due to how the image and chroma scaling compound or something like that.)

His screen is 2.37:1 and the movie is 2.40:1.

What he normally does, is zooms the projector so that the narrowest movies (2.40:1) fill the screen vertically, and then that means they overshoot the sides by a bit. This also means that 2.35:1 movies will overshoot all 4 sides. Normally with a decent projector this isn't a problem since they offer image masking, and you just mask off the 4 sides of the projector's image to fit your screen perfectly. This is what he did on his previous JVC RS600.

However, he just got a BenQ LK970 laser projector that does not have this masking option.

I think another issue is that his anamorphic lens is not perfect and it stretches the image horizontally slightly more than it should. So the issue is that if he wants to fill his screen vertically, the image will always overshoot his screen horizontally. This is why we need to cover some of the projector's image with black essentially so that the overshoot is invisible.

I am trying to understand your edited response, but I will have to think about it some more. Maybe my latest reply here sheds some more light on the set up and what we are trying to achieve.

Recap:

2.40 movie, stretched vertically by the projector to fill the projector's full 16:9 panel. Projector stretch is a 2.35:1 -> 16:9 stretch, so there is still a small black edge on the top and bottom of the projector's 16:9 panel after it vertically stretches 2.35:1 -> 16:9, because the movie is 2.40:1.

Projector is lens zoomed to make the 2.40:1 image fill the 2.37:1 screen vertically. This leaves a horizontal picture overshoot due to 2 factors. 1, because 2.40:1 is a wider aspect ratio than his screen, and 2, because his anamorphic horizontal stretch lens is not perfect and stretches the image slightly too far.

What we need to do in some way is to take a 2.40:1 movie and essentially crop off the sides a bit to make it a narrower aspect ratio. In truth we would also probably crop the top and bottom a little bit too, but again this is a crop that really is just trimming off some of the image data turning it into black, hopefully no zooming or scaling should be taking place or else that just messes it all up again.

So if you viewed this on a normal monitor, it would look like the video does not fill all the way to the edge of the screen, but it's not shrunk so scaling is not affected, it's just covered up by black. Need to render a black border over the top of the video to cover up some of the video on the sides and a little bit on the top and bottom too ideally.

I think you can accomplish this.

If you don't have the ability to crop an image, showing a 2.40:1 movie on a 2.35:1 or 2.37:1 screen would require leaving small black bars at the top and bottom of the image, like this, rather than have the image spill out the sides:

2.40:1 movie on 2.35:1 screen (http://upload.vstanced.com/images/2019/06/01/4130bd2b0b42637fc7ce7ee9b485046c.jpg)

If you define at 2.37:1 rectangle in screen config (3840 x 1620 or 4096 x 1728), then zoom control will crop all content to fit this rectangle, so it should always have the correct width and height to fit a 2.37:1 scope screen with cropping when necessary.

Under zoom control, you need to select automatically detect hard coded black bars and if there are big black bars ...zoom the bars away completely.

I really don't know how an anamorphic lens works in practice. So I can't tell you if the lens will stretch this rectangle correctly. You should be able to use the anamorphic stretch in madVR with zoom control enabled. If you are outputting to 4096 x 2160p, then set image upscaling to something like Lanczos3 + AR to lower rendering times for the required upscaling.

I think the anamorphic stretch looks right without screen masking in screen config with zoom control set to automatically detect hard coded black bars and if there are big black bars ...zoom the bars away completely.

I wrote some instructions on zoom control in the madVR guide in my signature (under 2. Processing) that could be worth reading. There are also some pictures with my TV used as the example projector screen to show what zoom control is doing, but there is no anamorphic stretch in the example. Because I can't test this, I'm not sure if I got the instructions right. I guess you can try them and report back...

[Charky]

@madshi:

there's been an influx of 4k remasters with teal+orange color grading that looks awful. do you think it would ever be possible to add something like a de-teal/orange at all?
As an amateur filmmaker, I can tell you that it's most probably not possible. Color grading is a very complex task done shot by shot with an artistic intent. It's not something that can be done (or "undone", which is technically doing another color grading based on an already color graded picture, with which will only degrade picture quality) on the fly with an algorithm. Even the auto-adjust option or LUT presets you can find in NLVE software like Adobe Premiere are just a base you have to manually tweak shot by shot for optimal results.

Bottom line : no, I don't think you can "un-teal & un-orange" a movie that has been color graded this way ;)

[Asmodian]

If you don't have the ability to crop an image, showing a 2.40:1 movie on a 2.35:1 or 2.37:1 screen would require leaving small black bars at the top and bottom of the image, like this, rather than have the image spill out the sides:

What they want is no small black bars at the top and bottom, losing image data off the sides. They already know how to get a proper image but they would rather lose some ot the image from the sides than have the remaining black bars.

This is why it cannot be done with madVR.

[Alexkral]

Bottom line : no, I don't think you can "un-teal & un-orange" a movie that has been color graded this way ;)
Why not? If what you want is just to remove a color cast then it's just a matter of color balancing. Probably not a good idea as you said, and certainly not a job for madVR anyway.

[huhn]

What they want is no small black bars at the top and bottom, losing image data off the sides. They already know how to get a proper image but they would rather lose some ot the image from the sides than have the remaining black bars.

This is why it cannot be done with madVR.

you can remove all blackbars with madVR like he said using blackbar detection by combining "if there are big black bars:" and zoom small black bars away

[Asmodian]

you can remove all blackbars with madVR like he said using blackbar detection by combining "if there are big black bars:" and zoom small black bars away

Oh I understand now, with the visible screen area defined and zooming black bars away you get the sides cropped and no black bars. Works great! They can even set the screen area a bit smaller to account for the slightly too wide horizontal stretch.

I forgot that zoom big black bars away is willing to lose any amount of image area. :o

[huhn]

and it can fail spectacularly not to say possibly increases render time massively.

[Asmodian]

Why does it increase the rendering time?

[huhn]

if you crop and zoom blackbar you need to upscale and depending on your settings it can melt your GPU.

[Village Guy]

I have been testing HDR on the latest build passing thru metadata. HDR mode kicks in perfectly, unfortunatley it gets stuck in HDR mode until I reboot the PC. Is this a known anomaly?

[bcec]

Could you list some examples of teal/orange movies?

All the movies in Nolan UHD set and upcoming Batman/Returns/Forever/&Robin UHD release. Harry Potter UHD releases. There are more, and Warner Bros is the worst offender.

Note that none of these movies had orange-teal grading originally - even in their BD releases. This is something the studio did *after the fact* for 4K releases to make things pop. But it looks awful, not to mention it is not Director's original intent.


...
Bottom line : no, I don't think you can "un-teal & un-orange" a movie that has been color graded this way ;)

Why not? If what you want is just to remove a color cast then it's just a matter of color balancing. Probably not a good idea as you said, and certainly not a job for madVR anyway.

Why not? MadVR is already doing a color correction when it does HDR->SDR. The reason I though about it is because how madshi is doing a hdr->sdr conversion, and there were many cases originally where color casts/shifts were there. I am not saying it is possible, but let's assume it is for a sec, I think I would want something filename based (a keyword in filename combined with an optional checkbox in madVR).

[SirMaster]

Oh I understand now, with the visible screen area defined and zooming black bars away you get the sides cropped and no black bars. Works great! They can even set the screen area a bit smaller to account for the slightly too wide horizontal stretch.

I forgot that zoom big black bars away is willing to lose any amount of image area. :o

OK, so I got this to work for the most part, but I can't use NGU scaling anymore even on an RTX 2070 or GTX 1080 when using anamorphic lens option.

I am dealing with 4K tone-mapped video on a native 4K display, so processing starts to get really extreme when it has to upscale chroma and luma and do tone-mapping. Normally there is no luma upscaling because its 4K native on 4K. And when it's 1080p video there is no tone-mapping because its SDR.

It works if I set chroma and luma scaling to Lancosz AR for instance. But if I set chroma and luma to NGU sharp medium even it's like 80-100ms render times even on a 2070 or 1080.

There is no way to make this work without using the anamorphic stretch I'm guessing.

The whole zooming away black bars stuff is what makes it only work if I fill the 16:9 panel with the 2.40:1 video via anamorphic stretch factor 4 / 3.

I wish madVR just had a simple image cropping option that didnt require this zooming stuff and just took the picture as is, 1:1 on the screen, and allowed to cover the edges with a specific amount of black like some projectors allow.

[garson]

@garson,

is there a reason you're watching a 720p file ? is that just for testing ?

Scaling 720p to 1080p results in far worse quality and more gpu use than simply watching a 1080p file.
No reason to be honest. This is from my old collection of GoT episodes in 720p. :D Just used it for testing of upscaling performance.
I just tried now with EVR instead of MadVR and looks like file is just like that, small stutters in some scenes.

:thanks:

[Alexkral]

Why not? MadVR is already doing a color correction when it does HDR->SDR. The reason I though about it is because how madshi is doing a hdr->sdr conversion, and there were many cases originally where color casts/shifts were there. I am not saying it is possible, but let's assume it is for a sec, I think I would want something filename based (a keyword in filename combined with an optional checkbox in madVR).
Can you post any screenshot to show how madVR's color correction for tone mapping is removing any SDR color cast? Actually what I often see is the opposite. Color correction for tone mapping is something mandatory, and it's not clear at all the best way of doing it. The aim of madVR is to reproduce the content in the most faithful way, I think what you're asking for could only be solved with an auto white balance feature which could potentially cause more harm than good.

[Asmodian]

OK, so I got this to work for the most part, but I can't use NGU scaling anymore even on an RTX 2070 or GTX 1080 when using anamorphic lens option.

I am dealing with 4K tone-mapped video on a native 4K display, so processing starts to get really extreme when it has to upscale chroma and luma and do tone-mapping. Normally there is no luma upscaling because its 4K native on 4K.

Do not set NGU image upscaling at a ratio below 1.2, it is pointless on a scaling factor that small. Chroma scaling difficulty will be the same so no change there. Upscaling the 4K to 8K and then downscaling to nearly 4K is not helpful and very slow.

Can you do a blind test with an assistant? See if you notice an improvement from NGU upscaling compared to Jinc.

[huhn]

I wish madVR just had a simple image cropping option that didnt require this zooming stuff and just took the picture as is, 1:1 on the screen, and allowed to cover the edges with a specific amount of black like some projectors allow.

mpc-hc video frame normal size that will do 1:1 presentation or mpc-hc video frame touch from outside. you don't need blackbar detection to use this it may be better not to use it in this case.

with the screen config "define visibile screen area..." you can add black bars and you are cropping the rest of the image.

which is BTW. the opposite of what you wanted before.

[Warner306]

OK, so I got this to work for the most part, but I can't use NGU scaling anymore even on an RTX 2070 or GTX 1080 when using anamorphic lens option.

I am dealing with 4K tone-mapped video on a native 4K display, so processing starts to get really extreme when it has to upscale chroma and luma and do tone-mapping. Normally there is no luma upscaling because its 4K native on 4K. And when it's 1080p video there is no tone-mapping because its SDR.

It works if I set chroma and luma scaling to Lancosz AR for instance. But if I set chroma and luma to NGU sharp medium even it's like 80-100ms render times even on a 2070 or 1080.

There is no way to make this work without using the anamorphic stretch I'm guessing.

The whole zooming away black bars stuff is what makes it only work if I fill the 16:9 panel with the 2.40:1 video via anamorphic stretch factor 4 / 3.

I wish madVR just had a simple image cropping option that didnt require this zooming stuff and just took the picture as is, 1:1 on the screen, and allowed to cover the edges with a specific amount of black like some projectors allow.

You don't have to use the anamorphic stretch if you don't want to. You can simply define the screen area in screen config and then zoom away the black bars with zoom control. The result should be the same.

If you need to reduce image upscaling, create a separate scaling algorithms profile for 4K content and set it to Lanczos3 + AR. In the end, you should end up with more pixels if upscaling is involved, so it should be worth it.

A 1080p profile could use NGU image doubling. I know there is at least one other person out there using the anamorphic stretch with tone mapping with a lesser GPU. He said he was using a similar combination.

[Warner306]

All the movies in Nolan UHD set and upcoming Batman/Returns/Forever/&Robin UHD release. Harry Potter UHD releases. There are more, and Warner Bros is the worst offender.

Note that none of these movies had orange-teal grading originally - even in their BD releases. This is something the studio did *after the fact* for 4K releases to make things pop. But it looks awful, not to mention it is not Director's original intent.

It has been said the Nolan movie look orange because they were scanned from the original film negative and no attempt was made to change the original color. So the colorist didn't necessarily change the color tone to make it look that way.

The yellow look of The Prestige was debated several times in the HDR -> SDR tone mapping thread. Many insisted that the color correction from tone mapping must be wrong, but I think that look is authentic to the original source material.

[huhn]

you can easily test anamorphic lens with any TV and show that you don't need a high end GPU you just need to understand what you are doing. or with other words don't use settings that work without an lens they are very different.

You don't have to use the anamorphic stretch if you don't want to. You can simply define the screen area in screen config and then zoom away the black bars with zoom control. The result should be the same.

you still need to fix the AR so this will not work. you have to at least use stretch to window in mpc-hc to get it kind of working for 21/9 sources in the end madVR does the same thing just worse and not adaptive.

[Warner306]

Does it really take that much upscaling just to correct a small portion of a 2.37:1 window? The ratio is almost identical to 2.40:1 by a few pixels. The anamorphic stretch on the projector should do the rest.

I don't know what upscaling is involved with the anamorphic setting. You seem to be able to apply it with or without screen masking, which creates different sized images. The one who told me they were using the anamorphic setting with tone mapping was using something like a GTX 1070 with a special profile for 4K content and upscaling to 4096 x 2160p.

[huhn]

i give you the none complicated example missing out a lot of parts:

3840/21*9=~1646
that means you are upscaling an 3840x1646 image to 3840x2160. that's a lot of work and with doubling not much fun for the GPU.
but it's get's better projector are usually 4096x2160 so if you mess up the settings it's doomsday depending on your setting you may double 3840 to reach 4096.

[bcec]

Can you post any screenshot to show how madVR's color correction for tone mapping is removing any SDR color cast? Actually what I often see is the opposite. Color correction for tone mapping is something mandatory, and it's not clear at all the best way of doing it.
See examples below. I didn't say madVR removes color cast. Rather I've seen in the earlier versions of its HDR->SDR conversion was producing some colors inaccurately, sometimes causing a cast. This is long fixed, however my thought process was that perhaps (?) that could be a feature to un-teal + un-orange these movies.

The aim of madVR is to reproduce the content in the most faithful way,
This is not true, there are many features in madVR that enhances the image by changing the source material in one way or another. For instance de-ringing, denoise, thin edges, crispen edges, and the list goes on. It doesn't simply display the given data, it manipulates it in different ways.

I think what you're asking for could only be solved with an auto white balance feature which could potentially cause more harm than good.
I think it is more complicated. As far as I understand, a blanket white balance wouldn't work because teal/orange conversion is done with something like this:
- apply orange to mids
- apply teal to highlights and shadows
So it would require undoing this, and it would probably be hard, maybe impossible. however madshi does tackle hard things with ease :P

It has been said the Nolan movie look orange because they were scanned from the original film negative and no attempt was made to change the original color. So the colorist didn't necessarily change the color tone to make it look that way.
That simply is BS. See some examples:
dark knight bluray (https://ibb.co/PzG7f93)
dark knight uhd (https://ibb.co/tXZyL53)

interstellar bluray (https://ibb.co/vHxH39k)
interstellar uhd (https://ibb.co/nBTYT48)

There are many other 4k rescans from older films, where colors are very accurate (bladerunner, ghostbusters, etc). Warner Bros is clearly applying teal/orange to make things pop. If movie has that look originally (for instance Transformers), then I have no problem. But this change from original material needs to be outlawed.


The yellow look of The Prestige was debated several times in the HDR -> SDR tone mapping thread. Many insisted that the color correction from tone mapping must be wrong, but I think that look is authentic to the original source material.
There's nothing wrong with MadVR right now, it is reproducing The Prestige uhd disk as accurately as it can. However, as I said, UHD release has an awful teal+orange color grading applied to it.
prestige bluray (https://ibb.co/mqHY85M)
prestige uhd (https://ibb.co/S5k2NLZ)

[huhn]

try a synthetic bt 2020 hard clip lut to DCI P3 native on a D65 calibrated screen.

[Warner306]

i give you the none complicated example missing out a lot of parts:

3840/21*9=~1646
that means you are upscaling an 3840x1646 image to 3840x2160. that's a lot of work and with doubling not much fun for the GPU.
but it's get's better projector are usually 4096x2160 so if you mess up the settings it's doomsday depending on your setting you may double 3840 to reach 4096.

Ok, I understand. You actually lose a lot of pixels by cropping the black bars. A safe setting for image upscaling with 4K content that doesn't use image doubling would help.

Cropping the movie won't change the aspect ratio of the pixels and the height of all aspect ratios is the same. I would think applying the projector's anamorphic stretch to the image cropped from madVR would result in the correct pixel dimensions if the anamorphic scaling doesn't know the aspect ratio of the source.

[Warner306]

That simply is BS. See some examples:
dark knight bluray (https://ibb.co/PzG7f93)
dark knight uhd (https://ibb.co/tXZyL53)

interstellar bluray (https://ibb.co/vHxH39k)
interstellar uhd (https://ibb.co/nBTYT48)

There are many other 4k rescans from older films, where colors are very accurate (bladerunner, ghostbusters, etc). Warner Bros is clearly applying teal/orange to make things pop. If movie has that look originally (for instance Transformers), then I have no problem. But this change from original material needs to be outlawed.


There's nothing wrong with MadVR right now, it is reproducing The Prestige uhd disk as accurately as it can. However, as I said, UHD release has an awful teal+orange color grading applied to it.
prestige bluray (https://ibb.co/mqHY85M)
prestige uhd (https://ibb.co/S5k2NLZ)

I don't think it is BS. The original Blu-ray version was color graded as you wanted it to appear. It was Christopher Nolan that didn't want any manipulation of the Kodak film scans. All of his UHD movies distinctly look like old film prints. I don't always like it the look in some of those movies, but I don't think anyone would deliberately color the movie that way.