www.makemkv.com

Just submitted for Batman 4K UHD part of the 4 disc collection on Amazon.

Interestingly, the next disc in the series Batman Returns seems to be working and ripping now.

MakeMKV v1.18.1 darwin(arm64-release) started
Optical drive "BD-RE PIONEER BD-RW BDR-XD07U 1.03 BFDL012758UCd" opened in OS access mode.
Using LibreDrive mode (v01.0 id=27184B96DBEE)
Using direct disc access mode
Loaded content hash table, will verify integrity of M2TS files.
Saved AACS dump file as /Users/tmulle/Library/MakeMKV/MKB20_v68_Batman_F571.tgz
The volume key is unknown for this disc - video can't be decrypted
Failed to open disc

Thanks!

tmulle wrote: ↑

Sun Jul 13, 2025 10:20 pm

Saved AACS dump file as /Users/tmulle/Library/MakeMKV/MKB20_v68_Batman_F571.tgz
The volume key is unknown for this disc - video can't be decrypted
Failed to open disc

Have you tried downloading the latest KEYDB.cfg file, copying it into MakeMKV's data directory (i.e. /Users/tmulle/Library/MakeMKV/ in your case) and then restarting MakeMKV?

If this doesn't work, could you also make this TGZ dump file available here please, e.g. by uploading it into (say) OneDrive or Google Drive, and then providing a public download link? This would allow people to try adding your disk to the public KEYDB file.

See Public KEYDB Disc Submissions.