A solution found to reading/writing ProRes 4444 in After Effects AE cc2020 without a color shift:

Reading/writing ProRes 4444 in a 16bit project is busted in cc2020, Version 17.0.5 (Build 16). To test, in a 16bit project, read in a ProRes 4444 file and write out the same and you'll see a slite color shift (cooler on OSX, warmer on Windows). The fix is to switch the project to 32bit.

Another option is to go back to cc2019. It does not have the cc2020 I/O color shift issue with ProRes 4444 and a 16bit project.

Funny that the fix for me is opposite the BUG slugline.

Adobe, I hope you're listening.

actually now all flavours of proress are coming out a bit darker and whether or not i am in 16 or 32bit. also to note is that i am in srgb space and linearise on..

if i render prores from mediaencoder then the brightness levels are correct BUT there is a small saturation shift. what is going on here Adobe?

h264 , exr, jpg - they all roundtrip perfectly. its just prores that i have found with this issue so far.

this issue seems to be back in version 17.1.3 (build 41)

Hello again John

I've just tested this again with the new 17.0.3 update and all is now fine.

Thanks a lot
Andy

Hi John

Thanks for the quick response. Here are the project and source files, which were all exported out of Premiere cc2019. The project is currently set to a color depth of 32 bits/channel and what you'll see is that the ProRes and PreRes(HQ) files are darker than the the other two files. Change the project color depth to 8 or 16 bit and they all look alike. This is all within After Effects, although the images retain the problem when exported.

The renderer is set to Metal with no color management enabled.

https://we.tl/t-9o1wWgUQBU

Many thanks
Andy

Hi Andy,

Thank you for reporting this issue. Do you have a clip of the affected media that you could share? It would help us confirm the issue and also get a sense of any embedded metadata which may be affecting the displayed colors.

- Do you have color management enabled in your project?
- Are you using the Metal render or Software Only in Project Settings > Video Rendering and Effects?

Please post a link to your files here, or if you prefer not to post publicly you can send it to aebugs@adobe.com.

If you send to that address:
A) Do not send .zip files, they will be blocked; renaming to .thisisazipfile is OK.
B) Post a comment here when you have sent the email. We'll need to manually check that inbox.

Thanks for any further information you can offer Andy.

- John, AE Quality Engineering