Houdini Tuts : Karma AOV from attribute Setting up cryptomatte and custom AOV in Karma : Houdini 19.5 Chapters : 00:00 Setting up scene 01:06 Setting up stage 01:40 Creating lights 02:35 Setting up Karma 03:27 LPE Tag for light AOV 04:57 Checking Light AOV result 05:12 Adding Extra AOV - Cryptomatte 07:30 Setting custom Attribute for extra AOV 09:43 RGB Mask based on custom Attributes