Cryptomatte is a method developed by Psyop for efficiently encoding accurate mattes. It uses typically three to five render elements (which are automatically generated) with OpenEXR files, which removes the hassle of creating dozens, or hundreds, of Multi Mattes. Using the Cryptomatte plugin for NUKE or Fusion, mattes can be extracted through directly picking objects or entering object names. Note that single-channel EXR files using DWA compression are supported, in addition to multichannel EXR files.
UI Text Box
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medium
type
note
With V-Ray 5.10.20, the Cryptomatte Render Element works with the Progressive Image Sampler type as well.