Page 1 of 1

Cryptomatte issue

PostPosted: Wed Mar 27, 2019 5:59 pm
by pegot
Cryptomatte passes don’t seem to render correctly in Octane Blender 2018.1 / 17.6. When I bring the files into After Effects, the Cryptomatte plug in doesn’t detect them.

However, if I take the same Octane Blender file and export scene to ORBX and render in stand alone, the Cryptomatte passes show up fine. See attached screen shots.

Attached is blend file, ORBX export, and rendered EXR files.

Re: Cryptomatte issue

PostPosted: Mon Apr 08, 2019 2:15 pm
by pegot
Bump.

Is anyone else having this problem? Has anyone been able to reproduce this issue?

Re: Cryptomatte issue

PostPosted: Tue Apr 09, 2019 1:06 pm
by J.C
I've checked this and this is not working in Blender :/

Re: Cryptomatte issue

PostPosted: Tue Apr 09, 2019 1:38 pm
by linograndiotoy
J.C wrote:I've checked this and this is not working in Blender :/


I can confirm that as well.

It has been reported and it will be fixed as soon as possible!

Thanks Pegot and Bartek!

Re: Cryptomatte issue

PostPosted: Sat Apr 13, 2019 3:41 am
by DrawFun
Hi,

Thanks for your report and sorry for the inconvenience.
This is due to the cryptomatte channels are different from the colorful image. They are actually pairs of int and float channels, each giving you a material ID and an amount of coverage. Blender 2.79 cannot recognize such formats so the export fails. As workarounds, we will export render passes(include crypto) as exr via octane sdks to the blender output path.

Cheers,
DrawFun

Re: Cryptomatte issue

PostPosted: Sun Apr 14, 2019 1:22 pm
by J.C
Hi DrawFun,

Can you elaborate this workaround? How are we going to use this?

DrawFun wrote:...As workarounds, we will export render passes(include crypto) as exr via octane sdks to the blender output path.

Re: Cryptomatte issue

PostPosted: Sat Jun 01, 2019 10:07 am
by J.C
In 17.9 Cryptomatte passes are saved in OpenEXR Multilayer file. As we know these are not being saved correctly and are useless. Correct Crypto passes are created in a separate file.

Re: Cryptomatte issue

PostPosted: Thu Jun 06, 2019 8:07 am
by J.C
Empty Cryptomatte files are created when none of the crypromatte passes are selected. Please disable this. This is waste of disk space.