Keydb.cfg Makemkv Guide
As we move further into the era of 4K UHD, the relevance of KeyDB.cfg is shifting. 4K UHD discs generally do not use BD+, relying instead on AACS2. The encryption is stronger, and the keys are harder to come by.
This is why two different pressings of the same movie (e.g., a "Special Edition" vs. a "Standard Edition") require different entries in the KeyDB.cfg . The disc structure changes, the hash changes, and the key changes.
You aren't wrong. The developer of MakeMKV is incredibly proactive. The software frequently updates its internal hash keys. For the vast majority of mass-produced, major studio releases, the internal engine of MakeMKV is sufficient. keydb.cfg makemkv
Copy the downloaded keydb.cfg into the data directory you identified in Step 1. :
| OS | Path | |---------|-------------------------------------------------| | Windows | %USERPROFILE%/.MakeMKV/ or C:\ProgramData\aacs\ | | macOS | ~/.MakeMKV/ or ~/Library/MakeMKV/ | | Linux | ~/.MakeMKV/ or ~/.config/aacs/ | As we move further into the era of
By maintaining an up-to-date keydb.cfg , you turn MakeMKV from a simple ripper into a powerhouse capable of preserving your entire physical 4K library.
Understanding KeyDB.cfg requires a brief look at what it actually fights against: AACS and BD+. This is why two different pressings of the same movie (e
Why does this matter? Because the AACS LA performs "Host Revocation." When they discover that a specific device key has been leaked (like those potentially used by older versions of MakeMKV or open-source libraries like libaacs ), they revoke it. New discs are pressed with instructions to reject those keys.
: Only download from trusted community forums like Doom9 or the MakeMKV forums to ensure the file is formatted correctly.
For anyone entrenched in the world of media archiving, MakeMKV is the undisputed heavyweight champion. It is the bridge between the proprietary, encrypted world of commercial Blu-rays and the open, playable world of MKV files. But for the uninitiated, the software can sometimes feel like a black box. You insert a disc, it scans, and suddenly—magic—your movie is ripping.
The keydb.cfg file is a public database used to store decryption keys (specifically —Volume Unique Keys) for Blu-ray and UHD discs. While MakeMKV primarily uses its own internal system of "hashed keys" that it downloads automatically, users often use a keydb.cfg file as an optional workaround to decrypt newer discs that aren't yet supported natively. Key Usage Details
