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AdamM

Cryptomatte Node doesn't allow selection

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I have rendered a cryptomatte sequence.
I import the sequence with a file node, I can see the different coloured mattes.
I connect that to a cryptomatte node so that I can choose different mattes.
With the Cryptomatte node active Left clicking on layer within the composite view does not add it to the matte selection.
What could I be doing wrong?

Is there a way to check if cryptomatte data is missing something?, surely If I can see the sequence and different coloured mattes its fine?

 

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Working fine here. You don't mention what version of Houdini you are using or where the cryptomattes came from.

COPs_cryptomattes.thumb.gif.244ffdb2339620f4ec8f5616d6f75a5b.gif

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Sorry.. 18.0.46 FX
I rendered the cryptomattes using a mantra out node.
I think I may of discovered what the problem is.
I tried re-rendering the cryptomattes with the lights OFF to make them render quickly. Even though the mattes were visible it appears maybe the mettadata was missing. A quick re-render of a single frame with the lights ON and the mettadata came back.
Rendering the entire sequence now with lights on.
 

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hm that still is an odd behavior. why would missing lights make cryptomatte not work?

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