More > JRiver Media Center 32 for Windows
JRVR tonemapping bright areas
umberto5585:
--- Quote from: mattkhan on July 12, 2024, 03:04:30 pm ---good find
there's definitely a momentary brighten adaptation in the background in that scene for me with jrvr, it lasts a v short period of time (sub second) but is not present with madvr. I would expect that is related to the brighten adaptation algorithm but couldn't be sure of that. Does it last longer for you or it's similarly a brief white out and then back to normal?
I'm not sure if mine is as severe as yours or I'm just watching it in motion vs a screen cap, perhaps you can share a precise timestamp for that one?
if it is what I think it is, I don't think this is fixable by tweaking and it would be one for Hendrik to take a look at.
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Indeed its nothing major and I am more than pleased with JRVR's tonemapping. Its given new life to my media as a projector owner (no JVC with built in tonemapping but rather an epson 5050ub). But yes, it is rather brief and appears to happen from 1:03-1:05 lasting maybe a couple seconds if that. I did also tweak various "custom" settings in Spline, and tried the other algorithms including Hable to no avail. Its a unique example, but again more a rarity that stands out as intriguing on one of my favorite films. Probably would not have even caught it otherwise. I appreciate you all taking time to respond.
murray:
--- Quote from: umberto5585 on July 12, 2024, 01:52:11 pm ---Sure thing...I have attached some pics below and labeled them as best as I can.. First pic demonstrating the blown out hills in the scene from 1917 which then fade in. 80 nits settings for testing, and gradually the background detail emerges in the second pic. The same scene playing in MadVR at 80 nits, where this detail is not blown out for some reason. Note the difference in the sky detail and hills. I also attached images of some of the settings. Let me know if this is helpful. I appreciate it!!
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I thought "Blue Noise" was better than "Ordered Dithering"?
umberto5585:
--- Quote from: murray on July 12, 2024, 09:09:49 pm ---I thought "Blue Noise" was better than "Ordered Dithering"?
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Yeah. I think it is, but ive tried both and its completely irrelevant and inconsequential to the brightness adaptation issue being discussed here. Just happened to be on those settings here. Thanks tho.
murray:
--- Quote from: umberto5585 on July 13, 2024, 12:39:42 am ---Yeah. I think it is, but ive tried both and its completely irrelevant and inconsequential to the brightness adaptation issue being discussed here. Just happened to be on those settings here. Thanks tho.
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Just going to test 1917 for you, I know it well.
murray:
--- Quote from: umberto5585 on July 12, 2024, 01:52:11 pm ---Sure thing...I have attached some pics below and labeled them as best as I can.. First pic demonstrating the blown out hills in the scene from 1917 which then fade in. 80 nits settings for testing, and gradually the background detail emerges in the second pic. The same scene playing in MadVR at 80 nits, where this detail is not blown out for some reason. Note the difference in the sky detail and hills. I also attached images of some of the settings. Let me know if this is helpful. I appreciate it!!
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Im not sure why your HDR doesnt show this like mine does?
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