Easiest ACES-CG to SRGB Jpeg?

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For any interested people here is a ps script that auto converts and renames *ACEScg* files to *rgb* in a given folder.

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color_Convert.ps1 (415 bytes)

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When I save a image from Karma why not making it look like in the render view?

Why is this so complicated? It doesn’t need to be

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Hello CV,

The reason images are automatically saved in aces-CG is that everyone does composite in aces-cg.
IT is not that much effort to transform it to srgb.

If you want a free good compositing software you can download davinci resolve fusion for free.

https://www.blackmagicdesign.com/products/davinciresolve/fusion [www.blackmagicdesign.com]

You will have to point the node to your aces config.
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Say you have an .exr file sequence rendered out of Houdini, and you want to send it to Davinci Resolve for editing/color grading in HDR mode with an HDR screen.

How to set the project up in Davinci Resolve?

Edited by sda502 - Oct. 28, 2022 12:20:59

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Screen Shot 2022-10-29 at 00.10.42.png (382.2 KB)

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TangheStudent
Hello CV,

The reason images are automatically saved in aces-CG is that everyone does composite in aces-cg.
IT is not that much effort to transform it to srgb.

If you want a free good compositing software you can download davinci resolve fusion for free.

https://www.blackmagicdesign.com/products/davinciresolve/fusion [www.blackmagicdesign.com]

You will have to point the node to your aces config.


Thanks Tanghe, I use Nuke with Aces, it works fine :-)
But for sending clients or other people a simple status I would rather directly burn in Aces into a jpg without extra stuff added.

I have a feeling Karmas Display Filter might be a possible way.

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CV
I have a feeling Karmas Display Filter might be a possible way.

It would be nice if it had an OCIO display filter. It only has OCIO colorspace transform, which requires the old style configs with extra colorspaces for every device/view combination.
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sda502
Say you have an .exr file sequence rendered out of Houdini, and you want to send it to Davinci Resolve for editing/color grading in HDR mode with an HDR screen.
How to set the project up in Davinci Resolve?

I'm using these settings which I picked up from somewhere. Naturally, "ACES Output Device Transform" depends on your target color space. Also, pick "CSC - ACEScg" as "ACES Input Transform" for your imported rendered images, although with global IDT set to the same value this might be unnecessary.

However, I'm not sure if it's THE proper way, so take my advice with a pinch of salt.

Attachments:
resolve_color_space_settings.png (31.0 KB)

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Here's an easy way to burn in the Aces Look - save it as a default and you can render/save out jpg's/png's without going through COPs or a compositing app. First make sure you have the baked lut from ACES, it should be somewhere like aces_1.x/baked/houdini/ and it's called sRGB for ACEScg Houdini.lut. Load that into the flipbook LUT slot and turn Gamma either off or set it to 1 (doesn't seem to make a difference). Save as Default and hit Start. Oh, and your viewport should be set to Karma of course
Maybe some guru can chime in and help out with an expression for a timestamp in the filename.

So now, every time you create a flipbook you'll get the look from the viewport burned in.
Edited by Yader - Oct. 29, 2022 17:26:54

Attachments:
01.PNG (58.6 KB)
02.PNG (40.0 KB)
03.PNG (37.9 KB)
04.PNG (4.1 MB)

https://behance.net/derya [behance.net]
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ajz3d
However, I'm not sure if it's THE proper way, so take my advice with a pinch of salt.

Either way thanks for posting....it just so happened that I had to do a video render in Davincini today from a Houdini exr sequence I ran off.

It's been two years since I've rendered off some video from Houdini exr's.

Before I always had to do some adjustments like gamma, offset and gain in the color section.

I just set my project the same as your color space & transforms settings.

It worked perfect with no adjustments needed. Got the video quality I wanted.(As what I previewed in Mplay)

Thanks for your post. It certainly helped me.
Edited by BabaJ - Oct. 29, 2022 20:09:19
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Bumping the topic, I created a LUT that I use in After Effects for converting Redshift's ACESsg output to sRGB.
Just use the AE native plugin Apply Color LUT (found in Utilities) and select the ACESsg_to_sRGB.3dl file (attached).

Attachments:
2023-01-19 20_35_07-.png (7.6 KB)
ACESsg_to_sRGB.3dl (70.3 KB)

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