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Old Yesterday, 13:07   #47261  |  Link
ashlar42
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I'll post just this last time on the subject , because, yes, it's off-topic. Advocating for 8.1 usage after more than two years since Windows 10 release is, in my so very humble opinion, kind of backward looking. As time goes by, the stuff that won't work correctly on 8.1 will only grow but, more importantly, there's a clock ticking for when security updates won't be coming anymore.

As such, I feel that all efforts should be directed toward having stuff work correctly on 10. From a user's point of view this includes bugging companies in order for them to fix existing bugs, and so on and so forth.
Suggesting people keep using 8.1, instead, actually slows down the process.

It would be different if madVR was multiplatform. Windows 10 sucks? Go and install Linux (in whatever distro). That would be ok, because it won't be a suggestion with a date of expiration built in.

Cheers and, it goes without saying, only respect and thanks for madshi and nevcariel, who remain free to suggest whatever the hell they prefer, disregarding completely my personal opinion, which ain't worth nothing (and I'm not being ironic).
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Old Yesterday, 13:09   #47262  |  Link
aufkrawall
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Linux does not even support HDR at all.
It will happen though.
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Old Yesterday, 13:16   #47263  |  Link
Manni
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Quote:
Originally Posted by Razoola View Post
From how I have been reading things in the last few weeks in relation to nvidia, even DX11 is playing games better than DX12 on win10 machines.
I have no interest re performance, but some games are DirectX 12 exclusive: https://en.wikipedia.org/wiki/List_o...ctX_12_support. Not that I care that much personally.

Quote:
Originally Posted by ashlar42 View Post
I'll post just this last time on the subject , because, yes, it's off-topic. Advocating for 8.1 usage after more than two years since Windows 10 release is, in my so very humble opinion, kind of backward looking. As time goes by, the stuff that won't work correctly on 8.1 will only grow but, more importantly, there's a clock ticking for when security updates won't be coming anymore.

As such, I feel that all efforts should be directed toward having stuff work correctly on 10. From a user's point of view this includes bugging companies in order for them to fix existing bugs, and so on and so forth.
Suggesting people keep using 8.1, instead, actually slows down the process.

It would be different if madVR was multiplatform. Windows 10 sucks? Go and install Linux (in whatever distro). That would be ok, because it won't be a suggestion with a date of expiration built in.

Cheers and, it goes without saying, only respect and thanks for madshi and nevcariel, who remain free to suggest whatever the hell they prefer, disregarding completely my personal opinion, which ain't worth nothing (and I'm not being ironic).
You are barking at the wrong tree. Madshi and Nev do all they can to make it work as best as possible on all recent/supported OSes and drivers, within reason.

HDR still works fine with Windows 10 pre Fall Creators Update with nVidia 385.28. That's why I stayed with these personally.

The problem is that MS keeps changing things (because they keep getting their HDR support wrong), and just by the time nVidia catches up they break it again.

When MS and nVidia stop this dance, then we'll get stable support (hopefully). This is why, until they get their HDR support in order, it is an option to go back temporarily to 8.1 if your priority is HTPC use.

Otherwise, use older OS/drivers versions, or complain to MS/nVidia instead of complaining here and taking valuable time from the devs who already do all they can to deal with what MS and GPU manufacturers throw our way.
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Last edited by Manni; Yesterday at 13:34.
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Old Yesterday, 13:45   #47264  |  Link
e-t172
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Quote:
Originally Posted by ashlar42 View Post
I suppose you're referring to the assistive tech upgrade path. That's gonna close at the end of this year: https://www.cnet.com/how-to/microsof...tive-features/
No, I'm not referring to that. Even if you don't use assistive tech, you can still install and activate Windows 10, today, with a Windows 7 or 8 key. Nothing changed. And I don't expect it will.
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Old Yesterday, 14:36   #47265  |  Link
Patrik G
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Does Madvr downconvert HDR to 8bit and also srgb colorspace when you select "Convert HDR content to SDR"?

when i compare the same hdr content with madvr to my K8500 UHD player i can see that colors are more saturated with madvr but i can also see that the content has the usual 8bit bandings in skies and such.

my tv has 89% of dci p3 colorspace
isnt it possible to set custom colorpoints X and Y for HDR that madvr can convert to instead of the lower srgb colorspace?
that way i can use the full color performance from the tv with HDR.
also leave the 10bit precision alone from the content would be a great idea

Last edited by Patrik G; Yesterday at 14:42.
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Old Yesterday, 18:06   #47266  |  Link
ipanema
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This is probably a stupid question. I know that MadVR isn't so difficult to install, but is there a particular reason why it doesn't have a installer (such as NSIS) that might make it even easier for novices to install/uninstall ?
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Old Yesterday, 18:38   #47267  |  Link
jkauff
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Quote:
Originally Posted by ipanema View Post
This is probably a stupid question. I know that MadVR isn't so difficult to install, but is there a particular reason why it doesn't have a installer (such as NSIS) that might make it even easier for novices to install/uninstall ?
I expect version 1.0 will include standard Windows install/uninstall .exe files. I agree that many younger users don't even know what a .bat file does.
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Old Yesterday, 18:56   #47268  |  Link
oldpainlesskodi
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Installed the latest win 10 insider build (17040) and the latest nvida driver 388.31,

My observations so far - yep, HDR borked, but, and this is a big but, the PQ has been given a big bump up (such an improved depth, clarity and colour reproduction - far more movie like). I can only assume the dev work that has gone into this build is to squeeze every ounce of PQ for the new Xbox (basically a Win10 box).

Sure, its a trade off for HDR (i've settled on letting MadVR convert, given the sheer volume of non-hdr movies in my collection vs hdr movies), but, from what I've seen, it's a price I'm personally willing to pay (until if and when they fix hdr).

Just my 2 cents.

K

Last edited by oldpainlesskodi; Yesterday at 19:32.
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Old Yesterday, 19:55   #47269  |  Link
el Filou
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What do you mean by "depth, clarity and colour reproduction"? Please use more precise terms.
Do you mean MS have improved the HDR conversion to SDR? Or the SDR playback in HDR mode?
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Old Today, 04:59   #47270  |  Link
RenderGuy2
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Quote:
Originally Posted by RenderGuy2 View Post
Regarding Dolby Vision, I'm certainly not an expert on these things, but it seems like the enhancement layer might be a form of ratio image. Basically the 12 bit Dolby Vision source divided by the HDR10 version equals the ratio image which has been down scaled to 1920x1080 (probably among other things). It's sort of a clever way of storing higher bit depth information in two lower bit depth images. In order for MadVR to access the 12 bit Dolbly Vision version, the decoder would need to simultaneously decode both layers (HDR10+enhancement) making both available to MadVR, which would need to scale the enhancement later back up to 3840x2160 and multiply it with the HDR10 pixels. Probably other operations would need to be performed on the enhancement layer, bit shifting or something as in float it would have values greater than one which would need to preserved/recovered. Or all this could be completely wrong
I did some research and it looks like I am wrong. It seems that the enhancement layer is not derived through division, but through subtraction. It contains the residuals from subtracting the HDR10 stream from the Dolby Vision signal. The tricky part is that the residuals are processed with a non-linear quantizer. The parameters of the non-linear quantizer are conveyed via metadata, so to reconstruct the Dolby Vision signal, first you need to read a bunch of metadata to derive the inverse quantizer so that you can access the residuals and add them to the HDR10 baselayer
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Old Today, 11:22   #47271  |  Link
d3rd3vil
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Quote:
Originally Posted by RenderGuy2 View Post
I did some research and it looks like I am wrong. It seems that the enhancement layer is not derived through division, but through subtraction. It contains the residuals from subtracting the HDR10 stream from the Dolby Vision signal. The tricky part is that the residuals are processed with a non-linear quantizer. The parameters of the non-linear quantizer are conveyed via metadata, so to reconstruct the Dolby Vision signal, first you need to read a bunch of metadata to derive the inverse quantizer so that you can access the residuals and add them to the HDR10 baselayer
Damn, well lets do that then
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