To illustrate, let's assume you want to store information about your media rips in KeyDB:
This is where comes into play.
In the context of is a community-maintained text file containing decryption keys (specifically Volume Unique Keys or VUKs) used to unlock protected Blu-ray and UHD discs. While MakeMKV primarily uses its own "hashed keys" system, it can fall back on a file if it's placed in the correct directory. 1. Where to Find KEYDB.cfg The most common source for this file is the FindVUK Online Database Main Source