Quote:
Originally Posted by huhn
madVR can do the "same" thing as a synthetic 3d LUT in real time by simply not sending meta data not using pass through. the of a benefit of HDR SDR 3D LUT is that it cost less processing power.
as always there are exception to the rule.
calibration is a complicated topic so there is no easy way.
to get a relatively brighter image you need to lower the target nits.
you need to load the 3DLUT maker shipped with dispalycal.
there the sources needs to be BT 2020 ST2084 10000 CM/m²
your tone curve "needs" to be ST 2084 (roll off)
now you come to the place where you select the "brightness" or gamma if you want to call it even through it clearly isn't gamma by setting the target peak CM/m² lower is "brighter" image try 200.
now you need to know your target (your TV gamut and stuff like this which a meter would read) i just assume BT 709 here so you need to load a synthetic BT 709 icm which can be created in displaycal directly.
the 3D LUT format needs to be madVR and convert HDR to SDR.
or you just as a reminder you let madVR do it in real time.
|
Thanks for the help!
I managed to create a new 3dlut by using the icm from a 65 lg oled I found. I set the settings similar to what you said but in the DisplayCAL program and changed to SDR like you said then it worked for HDR thank god. I then changed the target peak luminance and lowered this drastically which gave me the brightness I wanted on the first try lol.
I was testing full rgb 8bpc which is the fullest color range I can get at 30hz but I was getting a small but noticable stutter from time to time in panning scenes so I think this is more disturbing than not having it.
However the good news is I can now use the HDR file I was going to use in 30hz for 60hz my normal setting, and I must say I think it looks better than my old 3dlut for HDR.
The problem is few of the UHD movies or 2160p files I have actually switch to this HDR 3dlut so then if the material don't support it defaults to the normal one in my guide. I like that old 3dlut too although I found a third 3d lut that also looks good for non-HDR passthrough UHD 2160p material (I now have 2 for non hdr and one for hdr). Haven't quite decided which one of these I like best yet.
Any way to get more 2160p material use the HDR mode by the way, kind of sucks less than half of the files can use the full HDR 3dlut imo.
So, the comparisons are the HDR successfull passthrough using the newly created 3dlut with brighter image AND the non HDR 3dlut that is the second one not the one in my guide. I had to lower gamma to 1.8 on this non HDR passthrough 3dlut file to get good brightness I think.
Here are the comparisons:
HDR 3dlut scene 1
https://ibb.co/r5BxK6Q
NON HDR 3dlut scene 1
https://ibb.co/pX1jYZj
---
HDR 3dlut scene 2
https://ibb.co/WFKqPjR
NON HDR 3dlut scene 2
https://ibb.co/p2dPTyh
And as a bonus just a HDR passthrough no 3dlut
https://ibb.co/GWmdnLK
I dunno know I think the HDR one looks more dynamic and colorful than the non HDR. The just passthrough one looks dull as hell to me lol. So looks way better with 3dlut imo.
Any oppinions suggestions? Any way to fix the slight stutter in 30hz using this 3dlut? I tried disabling all settings still the slight stutter, and if I enable smooth motion (along with my smooth picture settings lol) the stutter goes away but then the whole image looks even worse because I guess the player fills out the missing frames or whatever with blur.
edit; also add schindlers list HDR 3dlut
https://ibb.co/cNzvKCg non HDR 3dlut
https://ibb.co/qMJzTCC I think I got the names on these 2 wrong so don't mind the names, should be in right place
(slightly brighter is HDR, it is also a larger file)