Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
20th February 2019, 20:43 | #54901 | Link |
Registered User
Join Date: Oct 2016
Posts: 896
|
Yes, I can't find the exact post quickly but it's been reported to madshi by one of the testers that black bars were confusing the dynamic HDR algorithm. It should be fixed in the next release (or you can download the latest test build from the AVS thread, search for 'madVRhdrMeasure' starting from the last page).
__________________
HTPC: Windows 10 22H2, MediaPortal 1, LAV Filters/ReClock/madVR. DVB-C TV, Panasonic GT60, Denon 2310, Core 2 Duo E7400 oc'd, GeForce 1050 Ti 536.40 |
20th February 2019, 21:25 | #54904 | Link | |
Registered User
Join Date: May 2013
Posts: 706
|
Quote:
For example, if it was a just a little bit of black bar in a near 16:9 movie, vs a 2:1 movie with big bars.
__________________
Ghetto | 2500k 5Ghz |
|
20th February 2019, 22:47 | #54906 | Link |
Registered User
Join Date: Nov 2013
Location: Hannover, Germany
Posts: 292
|
Just tested the latest test build (54) and the problem is unfortunately still there !! So I would be very thankful if anyone could inform Madshi about that because watching John Carpenter's original HALLOWEEN is really not 'fun' right now.
|
20th February 2019, 23:13 | #54907 | Link | |
Registered User
Join Date: May 2013
Posts: 706
|
Quote:
I just tried my copy of halloween 1978, changing the nit does make the screen brighter and darker. I am using dxva2 copyback lav, on madv 92.17
__________________
Ghetto | 2500k 5Ghz Last edited by tp4tissue; 20th February 2019 at 23:27. |
|
20th February 2019, 23:53 | #54908 | Link | |
Registered User
Join Date: Oct 2018
Posts: 319
|
Quote:
|
|
21st February 2019, 00:25 | #54909 | Link | |
Registered User
Join Date: Nov 2013
Location: Hannover, Germany
Posts: 292
|
Quote:
Unfortunately I can't use 'copyback' because my gpu is not fast enough. So I hope that Madshi might fix this soon !! Thx |
|
21st February 2019, 01:08 | #54911 | Link | |
Registered User
Join Date: May 2013
Posts: 706
|
Quote:
It does not work with native dxva or native dx11, because it can not measure the frame nits. There's no way around this. if you want to use dynamic hdr + highlight recovery, you'll have to upgrade your GPU. Which gpu do u have.
__________________
Ghetto | 2500k 5Ghz Last edited by tp4tissue; 21st February 2019 at 01:11. |
|
21st February 2019, 01:31 | #54912 | Link |
Registered User
Join Date: Oct 2016
Posts: 896
|
Measure nits work with native DXVA however black bar detection doesn't, so maybe the two features are interacting in a bad way.
__________________
HTPC: Windows 10 22H2, MediaPortal 1, LAV Filters/ReClock/madVR. DVB-C TV, Panasonic GT60, Denon 2310, Core 2 Duo E7400 oc'd, GeForce 1050 Ti 536.40 |
21st February 2019, 11:21 | #54915 | Link |
Registered User
Join Date: Jul 2014
Posts: 942
|
Did anyone notice that 12bits on nVidia seems to distort patterns when using MadTPG as a pattern source (in 4K UHD SDR at 23p) compared to 8bits?
Could anyone with access to calibration software/equipment confirm this? This is most visible when tracking gamut saturation and luminance linearity, but it also impacts greyscale. White balance isn't impacted significantly. 8bits is very linear and doesn't distort. 12bits breaks linearity and distorts the native gamut significantly. It would be great if someone could confirm. I don't use FSE, this is in full screen windowed mode. If you don't experience this, please specify OS, nVidia driver version, and software used to calibrate/measure. Although unlikely, it could be caused by a specific setting in madVR, but I haven't had the time to investigate this yet. I have all the performance settings unchecked. Details of rig in my sig (except driver, I was testing 385.28 for 12bits as I cant' get a custom refresh rate to work with CRU on the new JVC models).
__________________
Win11 Pro x64 b23H2 Ryzen 5950X@4.5Ghz 32Gb@3600 Zotac 3090 24Gb 551.33 madVR/LAV/jRiver/MyMovies/CMC Denon X8500HA>HD Fury VRRoom>TCL 55C805K Last edited by Manni; 21st February 2019 at 11:50. |
21st February 2019, 12:57 | #54917 | Link |
Registered User
Join Date: Jul 2014
Posts: 942
|
I can't be more precise. I can ask differently though
Using MadTPG as a source for patterns, in 4K23p SDR, full screen windowed, using the widest gamut your display can fully cover, preferably DCI-P3: 1) Measure gamut saturations (in 20% or 25% steps) with nVidia CP set to 8bits (after checking that levels are correct). 2) Measure gamut saturation (in 20% or 25% steps) with nVidia CP set to 12bits (after checking that levels are still correct, they might need to be changed when switching between 8bits and 12bits). Is there any significant difference? Please report OS, driver, GPU, calibration software used with your results. I used 385.28 for my tests, otherwise rig as in my sig. Thanks!
__________________
Win11 Pro x64 b23H2 Ryzen 5950X@4.5Ghz 32Gb@3600 Zotac 3090 24Gb 551.33 madVR/LAV/jRiver/MyMovies/CMC Denon X8500HA>HD Fury VRRoom>TCL 55C805K Last edited by Manni; 21st February 2019 at 13:00. |
21st February 2019, 14:15 | #54919 | Link |
Registered User
Join Date: Jul 2014
Posts: 942
|
It's on when I play HDR content, not when I calibrate. And it doesn't matter if 8bits or 12bits, as the profile is the same: SDR when calibrating, as I use SDR patterns to calibrated my SDR DCI-P3 calibration, HDR when playing content.
In any case, it can't make any difference, I select the calibration manually when I calibrate. "Send BT2020" is only a metadata flag in the SDR HDMI stream that I asked madshi to implement to help selecting a calibration automatically. It doesn't change anything in the content/patterns themselves. The only thing it can achieve is getting the display to switch to a different calibration, that all. So as long as the proper calibration is selected when calibrating, no difference can come from that. I know it's the case here, so make sure it's the case when you run the test. If you need BT2020 to be on for your display to select the widest gamut, then use it. Just make sure the same calibration is enabled in 8bits and 12bits, so that there shouldn't be any difference when measuring it.
__________________
Win11 Pro x64 b23H2 Ryzen 5950X@4.5Ghz 32Gb@3600 Zotac 3090 24Gb 551.33 madVR/LAV/jRiver/MyMovies/CMC Denon X8500HA>HD Fury VRRoom>TCL 55C805K Last edited by Manni; 21st February 2019 at 14:18. |
21st February 2019, 14:23 | #54920 | Link |
Registered User
Join Date: Oct 2012
Posts: 7,903
|
399.07 960
displaycal 3.7.1.4 windows 10 17134 no correction simulation profile DCI P3 D65 send bt 2020 was not used screen with native gamut biggest delta E between 8 bit at 8 bit and 10 bit output at 12 bit 0.2. the used vertification testchart only uses 50% steps(didn't know that before) i do a proper one on the weekend or maybe today. BTW. i'm not even aware of a LCD screen that can do DCI p3 100 %. |
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
Thread Tools | Search this Thread |
Display Modes | |
|
|