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3D LUT Calibration with JRiver
Manni:
--- Quote from: Hendrik on May 24, 2024, 05:32:16 am ---Profiles are the way designed to do this. Not planning on anything else.
--- End quote ---
Hi Hendrik,
Even simply specify two LUTs, one for rec-709 content, one for BT2020 content, as is the case for madVR? That would be enough.
Please could you confirm what the current behaviour is when HDR passthough is selected. Is the 3D LUT disabled in that case?
What about implenting compatibility with the madVR API for profiling / verification?
mattkhan:
There is a command to activate a profile manually now so it's feasible to automate it using an external remote control (not sure if feasible for you but certainly technically possible)
Hendrik:
--- Quote from: Manni on May 24, 2024, 05:40:58 am ---Even simply specify two LUTs, one for rec-709 content, one for BT2020 content, as is the case for madVR? That would be enough.
--- End quote ---
You can simply create a second profile with the second LUT, the system is designed flexibly to avoid a lot of special "simple" cases (which are different for everyone).
https://yabb.jriver.com/interact/index.php/topic,133480.0.html
Its not super complicated, just copy the default profile, setup a rule for something like [JRVR Video Gamut]=bt2020 - and off you go
--- Quote from: Manni on May 24, 2024, 05:40:58 am ---Please could you confirm what the current behaviour is when HDR passthough is selected. Is the 3D LUT disabled in that case?
--- End quote ---
3DLUT is disabled for HDR output currently.
--- Quote from: Manni on May 24, 2024, 05:40:58 am ---What about implenting compatibility with the madVR API for profiling / verification?
--- End quote ---
We cannot support a madVR API.
Maybe we can offer our own test-pattern generation through MCWS at some point.
Manni:
Great thanks for the clarification. If the 3D LUT is disabled for HDR I'll simply use the SDR LUT for now.
Manni:
I'm now using a rec-709 gamma 2.4 3D LUT in JRiver and all seems fine. My TV (Samsung S90C) is quite accurate after manual calibration so the difference isn't huge.
Questions:
1) Is there a way to see that the 3D LUT is enabled? There doesn't seem to be any info related to the 3D LUT in the OSD. If there is no way to display this info currently, it would be great to add it to the OSD (3D LUT: filename for example).
2) Is there a way to enable / disable the 3D LUT on-the-fly, as in madVR, with a hotkey (I use CTRL-SHIFT-3 in madVR)? A split-screen would be great too, to show the difference between LUT on and LUT off.
3) Assuming the LUT is active in SDR, it doesn't seem to be active in HDR passthrough, so all seems to be working as expected.
Thanks!
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