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Old 12th April 2019, 11:45   #55701  |  Link
huhn
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that actually works with nvidia and some TVs sadly not all.
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Old 12th April 2019, 11:47   #55702  |  Link
If6was9
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But why before wanting to use the 10bit at all costs, don't you do this test, to check if your chain be able to support them?
madVR 8bit + dithering V.S. 10bit direct
Surely you will discover the nature of your panels, and many the goodness of the work done by madVR.:
http://tweakvideo.altervista.org/blo...ore-con-madvr/

Last edited by If6was9; 12th April 2019 at 11:52.
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Old 12th April 2019, 11:51   #55703  |  Link
If6was9
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Quote:
Originally Posted by DMU View Post
Your projector goes into HDR mode at 8bit output madVR settings?
Of course, with EDID1

Last edited by If6was9; 12th April 2019 at 11:54.
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Old 12th April 2019, 13:03   #55704  |  Link
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Quote:
Originally Posted by Manni View Post
You can use the same P3 or BT2020 calibration for everything with a flat panel, but not with a projector if you care about picture quality. Using the same calibration for HDR and SDR raises the black floor and lowers the contrast in SDR unnecessarily. Not a problem with OLED, but an issue with projectors.
Oh, thanks.

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Originally Posted by VBB View Post
What are you trying to accomplish? With DisplayCal, it takes just a few minutes to calculate the additional LUTs.
Exactly this is what I do *not* want to do I only want to use 1 madvr slot.
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Old 12th April 2019, 13:12   #55705  |  Link
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Quote:
Originally Posted by If6was9 View Post
I with the RX580 in 8bit quietly send the HDR to the PJ
I see that you use full 4:4:4 RGB color space at 60hz,
maybe that's the problem, and not the AMD drivers.
There are very few chains that can manage 4K HDR in full RGB 60hz, let alone 10bit,
but it's not an AMD problem
I thought that too, this has been discussed in detail a couple of times but never got any traction, sadly this is mainly an NVIDIA problem fix thread...., only joking..

I've also tried 442 and 420, all exhibit the same problem, it happens to me with all SDR material, nobody has been able to explain why calibrating for BT2020 fixes it or why this only effects resolution sub 60hz, its not my TV or receiver either as I bypassed my receiever and tried my other non HDR TV, the problem is definately generated at the PC end before it goes to TV.

I can understand MADSHI reluctance to look at something which only affects one set of cards but he seems happy to deal with NVIDIA problems which dont effect AMD cards, so I live in the hope he'll get time to have a look at this at some point once he's finished with projectors and HDR.

Main thing though I guess is we have several workarounds people can use, this problem is the only issue AMD cards have so we should be grateful for that I guess.
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Old 12th April 2019, 13:22   #55706  |  Link
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Originally Posted by huhn View Post
blocking 10 bit for SDR would be ok if the issue would be present all the time like it was blocked on nvidia because nvidia broke it and there was no except everyone got the problem but as far as i can see it right now that's not the case her.

custom rates is useful for AMD and intel user too and you know that...
I dont think there are any exceptions here either, anyone using a 10 bit AMD HDR MADVR setup playing a 23,976 SDR movies should have over saturation mainly in reds, it can be quite subtle on some movies though.

Hit me up if you dont have this problem AMD users, I'd be interested to know how you machine is setup in detail.
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Old 12th April 2019, 14:18   #55707  |  Link
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If you guys want all these drivers issues fixed, you should start by reporting them in the appropriate places: NVIDIA driver forum and AMD driver forum. Get several people to report them and it will raise priority.
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Old 12th April 2019, 14:26   #55708  |  Link
mclingo
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Previous ticket:8200703976

well here's my ticket ref for AMD, I went as far as logging it as a fault, they seemed to be looking into it, they were replying every couple of days first with generic responses like reinstall drivers / windows etc but then they said it has been excalated to the drive team so I thought I was getting somewhere, next thing I know I got this:

This is an automatically generated email. Please do not reply.

Dear xxxxx,

You recently contacted AMD Global Customer Care.

If you submitted your request electronically, we have sent a response
to your inquiry and have had no reply from you in the last 10 days.

The then closed the issue pretending I hadnt contacted them further, even though I had several times asking why I was getting this email.

They've done this twice to me with this problem, I just gave up in the end, i'm not logging it again, someone else needs to take on the baton.

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Old 12th April 2019, 14:29   #55709  |  Link
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what we really need is someone who can work out what the problem is so we can go back to AMD and state clearly what they problem is and what needs to be done, half the problem is explaining the issue, its complicated when you factor in MADVR, bits and colour spaces etc.
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Old 12th April 2019, 14:34   #55710  |  Link
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Quote:
Originally Posted by clsid View Post
If you guys want all these drivers issues fixed, you should start by reporting them in the appropriate places: NVIDIA driver forum and AMD driver forum. Get several people to report them and it will raise priority.
Note also, this is hardly the appropriate place to log an AMD fault, this forum is not watched or moderated by AMD, you have to log a fault direct yourself where they can ignore it officially.
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Old 12th April 2019, 14:58   #55711  |  Link
madjock
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He says ....3 posts in a row.
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Old 12th April 2019, 16:17   #55712  |  Link
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Originally Posted by mclingo View Post
what we really need is someone who can work out what the problem is so we can go back to AMD and state clearly what they problem is and what needs to be done, half the problem is explaining the issue, its complicated when you factor in MADVR, bits and colour spaces etc.
Why don't you just send them the link I posted earlier with a complete summary of the steps to reproduce the issue? I could add "23-24 Hz Output Only" if that is also true.
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Old 12th April 2019, 17:10   #55713  |  Link
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Quote:
Originally Posted by huhn View Post
because madVR can output what ever you want the HDR->SDR doesn't change this.
if an bt2020 SDR file is played madVR will do the "same".
i have no clue if the madVR gamut mapping (not HDR related) using a roll of or is clipping or something else and i don't know that for 3D LUT too. i guess it's clipping.
Colorimetric LUTs always clip, I guess madVR too. This is HDR related because in this case many colors are out of gamut because of the luminance.
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Old 12th April 2019, 17:51   #55714  |  Link
mclingo
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Originally Posted by Warner306 View Post
Why don't you just send them the link I posted earlier with a complete summary of the steps to reproduce the issue? I could add "23-24 Hz Output Only" if that is also true.
thanks but i'm done with this, already wasted too many hours with it, someone elses turn, plus i've already given AMD that info, dont you remember at the time, it was me you were discussing this with, I sent it to them the very next email, this is where they told me it had gone to the drivers guys, then the emails stopped and they closed the ticket for no reason.

Its a shame MADSHI doesnt have a contact at AMD like he does with NVIDIA.
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Last edited by mclingo; 12th April 2019 at 17:54.
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Old 12th April 2019, 21:05   #55715  |  Link
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Does anyone uses Potplayer with LavFilters 74 in HDR movie and HDR is engaged in Full Windowed mode and when you go to the button of the window to the seek bar and it disable HDR everytime the seek bar pop out and it goes HDR mode when it disappear again. It didn't happen before, I think I only change LavFilters from 73.1 can anyone check if it happens with 73.1 whoever who didn't update yet
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Old 12th April 2019, 21:46   #55716  |  Link
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Originally Posted by x7007 View Post
Does anyone uses Potplayer with LavFilters 74 in HDR movie and HDR is engaged in Full Windowed mode and when you go to the button of the window to the seek bar and it disable HDR everytime the seek bar pop out and it goes HDR mode when it disappear again. It didn't happen before, I think I only change LavFilters from 73.1 can anyone check if it happens with 73.1 whoever who didn't update yet
DsPlayer does the same but when i press volume control and also when i press Ctrl + S for the Madvr setup. But it started after last windows update.
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Old 12th April 2019, 21:59   #55717  |  Link
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Originally Posted by Alexkral View Post
Colorimetric LUTs always clip, I guess madVR too. This is HDR related because in this case many colors are out of gamut because of the luminance.
Righto,

What is the info on how Madvr is handling the color space conversion.

I understand that it's slotting the P3 from HDR down to 709 by default.

But what if you gave it a p3 lut. does it then apply a different transformation ? or will the p3 lut cause oversaturation
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Old 13th April 2019, 00:42   #55718  |  Link
Alexkral
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Knowing that the content is P3 is only useful for non colorimetric rendering intents, because then the compression within 709 is less. If you don't change anything in the calibration tab then madVR will map 2020 to 709. This is not the same as a simple colorspace conversion, because it takes into account the luminance. If you give madVR a P3 HDR 3DLUT then madVR will do nothing, the LUT will do the tone mapping and change the coordinates to P3. Assuming that the content is really P3 and the screen is calibrated for P3, it will not cause oversaturation. I'm not sure if that's what you're asking.
Another story is that I'm seeing that secondary colors are usually slightly out of the P3 gamut. But since I don't think there are screens that go beyond P3, that doesn't change anything.
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Old 13th April 2019, 03:02   #55719  |  Link
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Giving madvr a p3 lut, causing madvr to do nothing.

DO YOU MEAN, using the 3D lut to do tone mapping setting ?


That's not my question, I am not using the HDR tone mapping via lut setting.

My question is if I use a P3 SDR 3Dlut, would That cause oversaturation, because after madvr brings p3 down to rec709, then 709 is expanded again into P3 by the lut
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Old 13th April 2019, 04:06   #55720  |  Link
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if you use a source DCI p3 d65 3d lut madVR never down converting to bt709.

what the target of the 3d LUt is is a different story.
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