www.makemkv.com

Those errors mean there's a spot on that the disc that was unable to be read correctly.

As tomty89 suggests, ddrescue might help.

Here's a reasonable webpage for how to do a SHA1 checksum on macOS.

https://mofa.cocolabs.dev/guides/how_to_sha1.html

The short answer is in Terminal do:

IINA is a very macOS version of MPV and a good VLC alternative.

What happens if you try to make a decrypted backup of the disc? On the first screen of MakeMKV click the icon of the green arrow and the yellow folder and make sure the decrypt checkbox is checked. Doing a backup of a disc will read the entire disc and in the case of a DVD output the contents to an ...

I'm not entirely sure what you mean when you say the "film ripped into many clips" but I'll explain how files are arranged on a blu-ray and UHD and that might help. When you make a decrypted backup of a disc with MakeMKV and you examine the output you'll find a bunch of #####.m2ts files in...

Gently cleaning a disc often helps, even if the disc is brand new and seems perfectly clean. In my experience, some drives just don't like some discs. For this reason, I have multiple different drives. Most discs work most of the time in my 'main' drive but on the occasion that one doesn't work, I'l...

Hi I've been following the instructions to flash my drive using my Mac (I don't have access to a PC) However, when I type './makemkvcon f -l' into Terminal, I get the following: Found 1 drives(s) 00: HL-DT-ST_BD-RE_BU40N_1.05_212404231347_MO9P9QJ5043 The flashing guide says I should see "/IOBD...

According to the log file MakeMKV successfully saved 9 files. Is that what you expect?

Since it is able to rip titles on the disc, things are being successfully decrypted. You do not have a keydb.cfg problem.

What does MediaInfo say about the .mkv files MakeMKV produced?

https://www.blu-ray.com/dvd/Go-DVD/1939/ The entry for the disc on blu-ray.com suggests it is a dual layer disc. I would guess that there is probably two titles on the disc, one that is the widescreen and the other that is the 4:3 pan & scan. Does MakeMKV's log suggest that MakeMKV is removing ...

Attach that generated dump file to an email and send it to svq@makemkv.com. Eventually a hashed key will be generated so MakeMKV can decrypt the disc. Additionally, you can also try the public KeyDB, an additional, separate key mechanism MakeMKV can use.


UHD FAQ

https://www.blu-ray.com/movies/A-Knights-Tale-4K-Blu-ray/383494/

There seems to be two cuts of the movie on the disc, an extended version and the theatrical version.

Do some of the titles have chapters and some do not? Probably choose the titles with chapters.

Badboyztn wrote: ↑

Mon Jun 01, 2026 4:35 pm

perrycho wrote: ↑

Mon Dec 09, 2019 1:29 am

IT chapter two dump file sent

I'm having the same issue. How do you do a file dump?

MakeMKV will create a .tgz file automatically when it does not have the necessary key to decrypt a disc. It puts the file in the MakeMKV data directory as defined on the General tab of MakeMKV's preferences.

Are there any differences in the audio choices between the two?

Since they have the same segment map, they're the same video. The different playlists might only show a subset of the audio choices available however.

I have the UHD Extended Cut (FALLGUY_UPK50) of Fall Guy and the Verbatim 43888 (LG BU40N inside) but I can't get the main playlist off the disc. I have the most recent keydb.cfg which fixed the decryption errors and enabled me to get all the short stuff off. But for the main playlist it eventually ...

Installed the latest keydb file from the previous link, restarted MakeMKV, and I still get "The volume key is unknown for this disc - video can't be decrypted." Hmmm. What is the name of the .tgz file that MakeMKV produced? Presuming it is different than the one mentioned in this thread t...