Is it possible to composite multiple .exr files into a single .exr file?
For example, if one .exr file contains several passes and another contains only one pass could they be combined to contained all in one file?
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Sign up to join this communityYes you can load several EXRs on the compositor and save all of their channels into individual layers on an OpenEXR multilayer.
Add a file output node, set it to OpenEXR muyltilayer and than add as many inputs as you need.
You can rename the channels as needed by double clicking on the name:
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