exrTrader Pro 2018 adds Cryptomatte support to exrTrader.
exrTrader Pro 2018.1
exrTrader Pro adds Cryptomattes to exrTrader.
Cryptomattes - originally devised by Jonah Friedman and Andy Jones from psyop - allow you to store automatically generated mattes for all items or surfaces in a single OpenEXR image.
These can then be extracted in a compositing application using freely available plugins.
Cryptomatte in exrTrader Pro allows you so save all Cryptomattes in a single or in separate files.
The levels determine how many different mattes may be stored per single pixel. 6 is usually a sufficient number.
You can also decide if the manifest - the file containing the names of the mattes - is stored embedded in the EXR image or as a separate file.
exrTrader also allows you to select any of the OpenEXR compression types that are compatible with Cryptomatte.
Mattes can be extracted in compositing applications using freely available plugins, available both for Nuke or Fusion - a free plugin for After Effects is currently in beta as well.
Cryptomattes combine the mattes with the names of the surfaces or items they store. This allows you to re-use selections across scenes if those names don't change.
exrTrader Pro uses the same plugin file as exrTrader, but requires a new license to unlock the exclusive functionality.