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adershbalachandran97
Hi everyone, I tried the above methods on Houdini 20 and karma and it still didn't work for me, So anyways I kept those setting as above and took a render and brought my karma render into nuke, and began to inspect the metadata for the crypto matte exr file. I had one previous working crypto matte file from another render that was working ( Renderman R25 ) and began to compare the metadata values.

I noticed that the " exr/cryptomatte/9171e81/name " key was not present on the karma render. From there it was easy

I added a ModifyMetaData node and added the key as " exr/cryptomatte/9171e81/name " and gave the layer name " CryptoMaterials " as a value. It can be based on any form of crypto matte based on object/primitive, kind, materials, etc.

After that, the crypto matte plugin began to work like a charm.

Thanks and Cheers

Cryptomatte in the same file as the beauty will work?

It’s unbelievable that Comp packages is still using old version OpenExr.

Houdini 19.5.534
When using PDG Service, there is always one last work item that cook never be completed.


According to the log, it seems that a non-existent ropfetch task was created, which caused an error to be thrown, and the ropfetch task that should have been executed was blocked forever, when using the default Cook Type 'Out-of-process' or canceling the current cook , re-executing cook will not cause this problem




example file attached with log.