Devices > Video Cards, Monitors, Televisions, and Projectors
HDR interactions between Windows and MC settings
sirkus:
I have read some threads concerning HDR but, I can't figure exactly the interaction between the various settings in Windows and MC.
My custom settings:
Windows: HDR active (I like it and it's cool for games)
Nvidia: RVB / 0-255 / 12 bit / Colors managed by Nvidia (custom gamma, overrides apps settings)
MC: Red October HQ, Best Quality
Madvr: 0-255 / 10 bit (or higher) / calibrated BT.2020 / gamma 2.4 / passthrough HDR / send HDR metadata to the display
All other settings are by default. Here are my questions when playing a movie in MC:
1. Does MC bypass the Windows HDR management when there are HDR metadata?
2. Does MC let Windows manage HDR when there are no HDR metadata?
3. Who controls the gamma between Nvidia and Madvr? My projector is calibrated for Windows with Nvidia settings.
4. Why you can select to send or not HDR metadata in Madvr? Passthourgh isn't really passthrough?
I have noticed that when activating and de-activating HDR in Windows, it causes HDR management instability in MC. MC seems to switch to HDR only when it has some interface element displayed in full screen (right click menu or tittle top menu). And I have to reboot to find a stable situation.
tij:
i have Nvidia 1070 ... i only use RO HQ ... so cannot comment on other modes ... this mode use MadVR as video renderer
lots of information is given in MadVR OSD if you press Ctr+J when video is playing
if turn on HDR in Windows ... MadVR will use that ... i dont use this cause it makes SDR content look dull for some reason ... and i cannot be bothered to fix it (i suspect my MadVR outputs SDR is in Rec709 or Rec601 ... and windows expects bt2020 ... kinda explains why it looks dull)
if turn off HDR in Windows ... MadVR uses NVidia HDR ... only drawback for that - if you show play control during playback, video will be outputed in SDR ... but thats nit problem for me as i never use that
so for MadVR:
1. if MadVR detects HDR ... it will do what you tell it to:
a. it can passthrough HDR metadata to OS (if HDR setting is on in Winsows control panel) or to Nvidia (if HDR setting is off in Windows control panel) ... in both cases OS and NVidia just pass HDR metadata to TV to handle it
b. it can convert HDR to SDR ... dont be fooled by thinking its bad just because name contains “SDR” ... what it really means - it converts HDR to capability of your TV (what essentially TV is doing when it receives HDR metadata ... aka tone mapping as none of current TV can display full color and brightness of HDR) ... you specify maximum brightness your TV is capable and MadVR tone maps to that
as TV does not do tone mapping (as it does not receive HDR metadata) it will not kick in HDR mode ... but tone mapping is already done by MadVR ... advantage of this mode is - you have control over HDR tone mapping process ... as opposed to just letting TV handke it (kinda like letting MadVR do upscaling rather than let TV handle it)
2. if there is no HDR metadata in video ... then its SDR video ... no need to handle any HDR
3. depends on setting ... madVR has calibration settings which among other things include gamma ... if you also specify something in Nvidia control pannel, that will be applied too (which you dont want) ... so if using madVR ... in NVidia panel specify “video player setting”, essentially telling NVidea that player will handle this
4. see 1b
mattkhan:
what display are you using? generally speaking best results will be achieved with the beta build of madvr and using its dynamic tone mapping. See https://www.avsforum.com/forum/24-digital-hi-end-projectors-3-000-usd-msrp/2954506-improving-madvr-hdr-sdr-mapping-projector.html for details (current build is b110).
this won't work for games mind you
JimH:
--- Quote from: mattkhan on November 09, 2019, 05:45:52 am ---what display are you using? generally speaking best results will be achieved with the beta build of madvr and using its dynamic tone mapping. See https://www.avsforum.com/forum/24-digital-hi-end-projectors-3-000-usd-msrp/2954506-improving-madvr-hdr-sdr-mapping-projector.html for details (current build is b110).
--- End quote ---
JRiver recommends that you use the madVR version that comes with it. Use of a newer version might work, but might cause problems. You could read more about your options on the Red October thread on our wiki.
sirkus:
--- Quote from: tij on November 09, 2019, 05:33:54 am ---if turn on HDR in Windows ... MadVR will use that ... i dont use this cause it makes SDR content look dull for some reason
--- End quote ---
That's what happen to me:
--- Quote from: sirkus on November 09, 2019, 04:11:25 am ---I have noticed that when activating and de-activating HDR in Windows, it causes HDR management instability in MC. MC seems to switch to HDR only when it has some interface element displayed in full screen (right click menu or tittle top menu). And I have to reboot to find a stable situation.
--- End quote ---
--- Quote from: tij on November 09, 2019, 05:33:54 am ---a. it can passthrough HDR metadata to OS (if HDR setting is on in Winsows control panel) or to Nvidia (if HDR setting is off in Windows control panel) ... in both cases OS and NVidia just pass HDR metadata to TV to handle it
--- End quote ---
IMOO, it shouldn't do that. If you select "passthrough HDR" and "send HDR metadata to the display", madVR should pass to Nvidia and bypass OS HDR settings.
--- Quote from: tij on November 09, 2019, 05:33:54 am ---2. if there is no HDR metadata in video ... then its SDR video ... no need to handle any HDR
--- End quote ---
IMOO, madVR should pass to OS HDR settings which will pass to Nvidia. That's what seems to happen when you play a video in a Windows player (browser or anything else).
--- Quote from: tij on November 09, 2019, 05:33:54 am ---3. depends on setting ... madVR has calibration settings which among other things include gamma ... if you also specify something in Nvidia control pannel, that will be applied too (which you dont want) ... so if using madVR ... in NVidia panel specify “video player setting”, essentially telling NVidea that player will handle this
--- End quote ---
OK, clear. Then "disable calibration settings for this display" in my case.
--- Quote from: mattkhan on November 09, 2019, 05:45:52 am ---what display are you using? generally speaking best results will be achieved with the beta build of madvr and using its dynamic tone mapping.
this won't work for games mind you
--- End quote ---
The projector is a laser Acer VL7860. While madVR tone mapping sounds interesting (I didn't know that), my calibration is done for Windows and HDR and for now, I don't want to manage multiple color configurations (one for OS and one for madVR). I'm satisfied as is, when I disable OS HDR and let MC manage HDR content (madVR HDR passthrough). The only thing I would like, is that MC could manage in a more subtle way when OS HDR is enabled. And that there will be no need to switch on/off OS HDR settings (there is a bug somewhere between OS and MC that makes the HDR management unstable after switching).
Navigation
[0] Message Index
[#] Next page
Go to full version