Devices > Video Cards, Monitors, Televisions, and Projectors
HDR not working?
JRU:
I'm using JRiver 26 Red October HQ (nothing modified) on Windows 10 with a RTX2080Ti on a TCL 85P8M TV. I have also installed SVP but do not use it with JRiver, instead I use it separately with MPC. In MadVR When I use tonemapping then the colors are displayed correctly but there is no "HDR10" message from the TV and it doesn't really look like HDR I guess but when I use passthrough in MadVR then it is dull, brightness,contrast and color all seem dull, greyish dull, some scenes show some color but this color is still far below regular SDR so I would think that HDR is not working but when I play these HDR files with passthrough (and the send meta data option ticked) then the "HDR10" message is displayed by the TV. So it seems to me that somehow the TV is not displaying the content properly even though it is receiving a HDR signal and I can not figure out why, maybe my TV is not capable? Also I tried watching a few HDR videos on youtube but I think they were being displayed as SDR since they were displaying on an older SDR 1080p TV as well, there was some extra pop in those videos but I would still guess its normal SDR but dont know for sure. I leave windows as is and do not turn on HDR mode in windows. I am probably doing something wrong and have been trying to figure it out but no luck, would really appreciate some help/tips.
tij:
HDR uses BT2020 color space ... no consumer display/projector can display/cover that color space both brightness wise and color wise.
So you need to map BT2020 to something that your TV can display. This is called tone mapping. Obviously there will be sacrifices during the process.
HDR video comes with metadata that helps TV to apply better tone mapping. Without that metadata TV will not do tone mapping.
That HDR logo you see on TV ... just indicate that TV is doing tone mapping ... it does not mean TV is switching to some magical mode that make picture look better (though most TV will crank up brightness if doing tone mapping)
MadVR can also do tone mapping ... dare I say better than any TV (certainly better than my LG E6) ... what MadVR guarantees is that during tone mapping - color/hue will be preserve ... my LG E6 for example introduces yellow/green hue when tone mapping very bright reddish scenes.
Now to MadVR option
1. Passthrough with no metadata ... no tone mapping is done by MadVR or TV ... image looks dull
2. Passthrough with metadata ... TV does tone mapping ... HDR logo pops up
3. MadVR do tone mapping with no metadata ... MadVR does tone mapping ... no HDR logo pops up
4. MadVR do tone mapping with metadata ... MadVR do tone mapping ... then TV do further tone mapping ... HDR logo pop up ... do not do this option - your video is compressed (this is what tone mapping actually does - compress video to something that your TV can display) twice
PS. most ppl see HDR logo pop up on TV and straight away perceive image as better ... it’s a placebo ... MadVR does much better job
JRU:
--- Quote from: tij on May 15, 2020, 04:14:06 pm ---HDR uses BT2020 color space ... no consumer display/projector can display/cover that color space both brightness wise and color wise.
So you need to map BT2020 to something that your TV can display. This is called tone mapping. Obviously there will be sacrifices during the process.
HDR video comes with metadata that helps TV to apply better tone mapping. Without that metadata TV will not do tone mapping.
That HDR logo you see on TV ... just indicate that TV is doing tone mapping ... it does not mean TV is switching to some magical mode that make picture look better (though most TV will crank up brightness if doing tone mapping)
MadVR can also do tone mapping ... dare I say better than any TV (certainly better than my LG E6) ... what MadVR guarantees is that during tone mapping - color/hue will be preserve ... my LG E6 for example introduces yellow/green hue when tone mapping very bright reddish scenes.
Now to MadVR option
1. Passthrough with no metadata ... no tone mapping is done by MadVR or TV ... image looks dull
2. Passthrough with metadata ... TV does tone mapping ... HDR logo pops up
3. MadVR do tone mapping with no metadata ... MadVR does tone mapping ... no HDR logo pops up
4. MadVR do tone mapping with metadata ... MadVR do tone mapping ... then TV do further tone mapping ... HDR logo pop up ... do not do this option - your video is compressed (this is what tone mapping actually does - compress video to something that your TV can display) twice
PS. most ppl see HDR logo pop up on TV and straight away perceive image as better ... it’s a placebo ... MadVR does much better job
--- End quote ---
In my case when I use pass through with metadata the image on the TV looks dull, if I use tone mapping then it looks decent. If I dont use meta data with passthrough then the TV does not display the HDR10 message and the image still looks dull. How do I make the TV look good/best it can with pass through and meta data enabled?
tij:
What version of MC you are using? … can you post some screenshots
EDIT: what is your TV make and model ... mediainfo of your moviie file will be helpful too
JRU:
I am using MC26. I have attached 2 images, one for tonemapping and one for passthrough, the passthrough one is dull.
I am using a TCL 85P8M TV. I do not know how to get/post mediainfo, if you can let me know then I will be happy to post it.
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