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Old 1st January 2020, 15:08   #58261  |  Link
ace
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Originally Posted by WuNgUn View Post
Have you tried just passing meta data thru? Using pixle shades and nit variable makes a big difference in how the image is displayed.
When I passthrough HDR to display I get washed out colors because my TV doesn't support HDR.
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Old 1st January 2020, 17:37   #58262  |  Link
brazen1
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Originally Posted by WuNgUn View Post
So, installed MSI Afterburner over clocking utility... With a bit of voltage, core, fan and memory tweaking, I can use various NGU chroma upscaling profiles (depending on the bitrate of 4K media) on my trusty old GTX 960, which is also vendor overclocked.

Was previously using jinc upscaling... But from what I've read, NGU is preferred...?

Sent from my SM-G965U1 using Tapatalk
Been using MSI Afterburner with a GTX 960 for years now.
I set core clock to +50 and memory to +520 to start with Windows.

2160p 60fps = NGU AA low Luma & Chroma
2160p 24fps = NGU AA very high Luma & NGU AA low Chroma
1080p = NGU sharp med Luma & NGU sharp Chroma
540p, 720p, 3D = NGU sharp very high Luma & Chroma

No trade quality for performance checked.
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Old 1st January 2020, 17:48   #58263  |  Link
WuNgUn
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Originally Posted by brazen1 View Post
memory to +520 to start with Windows.
+520!? Holy...
Did you mean +52?

No voltage tweaks?

Sent from my SM-G965U1 using Tapatalk
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Old 1st January 2020, 18:34   #58264  |  Link
brazen1
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I meant exactly what I wrote to help you. It helped me. https://www.tomshardware.com/reviews...60,4063-4.html
This is a 4GB card fwiw.
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HOW TO-Kodi 2D-3D-UHD (4k) HDR Guide Internal & External Players
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Old 1st January 2020, 18:46   #58265  |  Link
WuNgUn
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Originally Posted by brazen1 View Post
I meant exactly what I wrote to help you. It helped me. https://www.tomshardware.com/reviews...60,4063-4.html
This is a 4GB card fwiw.
I have the EVGA 960 SC, not SSC...
2GB ram and 6-pin aux power...

I'll do some testing
Thanks for the link
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Old 1st January 2020, 18:53   #58266  |  Link
brazen1
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Yeah, mine is SSC 8-pin so yours will be different. Oh well, happy new year.
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Old 1st January 2020, 20:54   #58267  |  Link
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@ace I have watched many UHD Blu-rays in SDR via madVR (with Mediaportal and MPC-HC) and have never seen anything like your screenshot (which is massive btw, not great to insert inline in a post).
That looks to me like a decoding problem. Are you sure the output of the decoder isn't truncated to 8-bit or something like that? Please link to a screenshot with the madVR OSD visible during playback, and if possible a screenshot of the video decoder filter's config/its output pin properties.
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Old 2nd January 2020, 01:40   #58268  |  Link
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Truncation would not result in something like that, the extra bits are not for brighter or extra colors. It would look posterized or banded if it was truncated but not darker.
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Old 2nd January 2020, 02:07   #58269  |  Link
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Well look at the lighter parts of the sky and the Fox logo, it is posterized and banded.
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Old 2nd January 2020, 02:51   #58270  |  Link
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Honestly looks like colorspace issues of some kind.
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Old 2nd January 2020, 02:51   #58271  |  Link
huhn
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the shown effect shouldn't be from truncation or rounding alone but that doesn't matter. it's clearly not what should happen.

the video result is similar to the days when 10 bit x264 was new and older software couldn't handle it properly while still accepting it.

i pointed to DXVA2 decoding in the original post of him and he ignored it so...
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Old 2nd January 2020, 04:14   #58272  |  Link
mariner
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HLG support

Greetings madshi.
As you know, most 1st generation HDR displays lack support for HLG. This is especially true of low cost projectors. ATM it seems only the Panasonic players have the ability to convert HLG to PQ so that these can be displayed properly on such devices.
Would you like to look into the possibility of adding HLG-->PQ mapping curve to the madshi renderer so that HLG content will be output as PQ?
Many thanks and best regards,
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Old 2nd January 2020, 07:53   #58273  |  Link
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If my display has better WCG coverage in DCI-P3 than REC.2020, is it possible or wise to convert rec.2020 into dci-p3 with MadVR?

And what's the recommended settings for 4K content to a 4K display?


edit: just did some "simple" calculations on the WCG info I found, so it seems there's no point to do conversion, but my calculations method on the matter could be totally wrong!?

dci-p3 - 45.5% perceptible to human
rec.2020 - 75.8% perceptible

Q70R
------
DCI P3 xy 87.83 %
DCI P3 uv 93.67 %
avg: 90.7%
45.5 * .907 = 41.2685% avail

Rec 2020 xy 65.37 %
Rec 2020 uv 73.92 %
avg: 69.645%
75.8 * .69645 = 52.79091% avail
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Last edited by totalz; 2nd January 2020 at 08:27.
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Old 2nd January 2020, 13:56   #58274  |  Link
huhn
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i have to miss something important because turning HLG to PQ is trivial and madVR doesn't support HLG yet so sounds logical to me to add this.

you convert it to linear to get linear 1000 nit then you divided by 10 to get linear 10000 nit and now you turn it to PQ set the meta data to 1000 nits and you are done.
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Old 2nd January 2020, 14:01   #58275  |  Link
nevcairiel
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Originally Posted by totalz View Post
If my display has better WCG coverage in DCI-P3 than REC.2020, is it possible or wise to convert rec.2020 into dci-p3 with MadVR?
Since DCI-P3 is a subset of BT.2020, anything else would be rather surprising. And yes, madVR can do such a conversion, in the simplest form would be to just tell madVR that your screen is calibrated to DCI-P3.

Of course for this to work, you would also have to tell your screen that its receicing DCI-P3 data, if you can't do that, its not really a good idea to set it up like that.

Another option would be to calibrate your screen with a colorimeter, but that requires having such a device, of course.
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Old 2nd January 2020, 17:42   #58276  |  Link
tyguy
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Originally Posted by j82k View Post
Is that with HDR?



I do also get excessive flickering during scrolling credits with HDR content when outputting 59/60 Hz with smooth motion enabled, SDR is fine.



I've already mentioned this quite some time ago...

Yes, it’s with hdr.
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Old 2nd January 2020, 17:58   #58277  |  Link
ace
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Originally Posted by huhn View Post
i pointed to DXVA2 decoding in the original post of him and he ignored it so...
(Sorry I missed your reply in the other thread.)

Hi huhn and El Filou, okay under "Built-in Video Decoder Configuration->DXVA2 Copy-Back" I changed it from "D3D11: Nvidia GeForce GTX 1080" to "Do Not Use (Recommended)" and the banding/posterization went away which is a huge improvement.

Now Movies & TV player:


Vs PotPlayer:


Windows Movies & TV player still gives a more vibrant, less dull image with a bit more detail, even without me trying to set the peak nits or any other setting. Here's how I set it in MadVR:



Edit:
Okay after changing "desired display gamma" from "BT.709/601 curve" to "pure power curve" and "tone mapping curve" from "BT.2390" to "clipping" my PotPlayer image is nearly identical to Windows Movies & TV so I'm happy

Thanks again huhn and el Filou for the excellent diagnosis.

Last edited by ace; 2nd January 2020 at 18:27.
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Old 3rd January 2020, 09:33   #58278  |  Link
totalz
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Originally Posted by nevcairiel View Post
Since DCI-P3 is a subset of BT.2020, anything else would be rather surprising. And yes, madVR can do such a conversion, in the simplest form would be to just tell madVR that your screen is calibrated to DCI-P3.

Of course for this to work, you would also have to tell your screen that its receicing DCI-P3 data, if you can't do that, its not really a good idea to set it up like that.

Another option would be to calibrate your screen with a colorimeter, but that requires having such a device, of course.
Hi nevcairiel, thanks for reminding me that DCI-P3 is a subset of BT.2020, so the info about colors perceptible to humans I got from https://www.ittiam.com/hdr-color-spa...cip3-rec-2020/ . If BT.2020 has more perceptible colors to humans, then there's no point to convert DCI-P3 to BT.2020 or vice visa. Cause if a color is imperceptible, it will still be after the conversion. Am I missing something?
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Old 3rd January 2020, 13:19   #58279  |  Link
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you are missing white point which can play a huge rule in this depending where you got the numbers from.

bt 2020 is currently used so the TV knows the input format it usually only holds DCI P3 D65 information the rest is blank.

the point of BT 2020 is that the TV expect this format when an HDR signal is send to it or you can tell your TV the signal is BT 2020 so it can color match it that's not the case with DCI P3 which is D65 D63 or D60 and the "gamma" is 2.6 or sRGB. it's a mess.
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Old 3rd January 2020, 16:09   #58280  |  Link
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On a monitor who has 10 bit (8 bit+frc) is it worth setting 10 bit via displayport in the nvidia control panel, or 8 bit is enough?
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