Chaos Corona for Cinema 4D > [C4D] General Discussion

Cryptomatte pass for animation

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LeSill:
Hi guys,

Is it feasible to save the Cryptomatte Pass for animation? It is stated that you must save it from VFB as CXR and alter the extension to EXR. Well, it works for stills, but what about animation? I tried saving a few frames as EXR, but it did not work.
Any suggestions?

Thank you

bnji:
Hello there,

Could you please elaborate a little bit more about what you're trying to achieve?
Feel free to include as many screenshots as needed to illustrate the issue better.
Looking forward to hearing from you soon.

LeSill:
Hi,

I've recently discovered that it is also possible to save image sequences/animation in CXR format. I assumed that was a format available just in VFB. I tried saving CRYPTOMATTE using ordinary EXR format, but it didn't work. Now I've checked whether DaVinici Resolve can open CXR format for Cryptomatte masking, and to my surprise, it can. Unfortunately, Photoshop does not support CXR format.

Kind regards

TomG:
Photoshop does support CXR - you rename it to EXR :) CXR is just EXR file format with extra metadata, that Photoshop will ignore on loading. A batch rename tool can be used if you have several CXRs you want to turn into EXRs. As a note, don't forget Photoshop needs EXR-IO to load EXRs properly (and you will need to chose options for EXR-IO to load cryptomatte data).

The saving an image sequence to CXR and not just saving from the VFB was added in Corona 12 Update 1, https://www.chaos.com/blog/corona-12-update-1, "Added option to save CXR file directly in Save tab in render settings. This should work in batch rendering or when rendering takes."

TomG:
PS - for using cryptomatte in PS.

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