jayper
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Understood, I should have noted that this is a screenpass protected disc. Which is why I thought it was odd that the playlist was not shown when I first decrypted the disc. I assumed that screenpass hadn't been sorted out for the disc yet and opted for a protected ISO so I could come back and check later.
LibreDrive is part of makemkv. If you have a drive with a firmware that is supported, it just works. Makemkv does not support iso. There is a way to use makemkv to enable libredrive on a disc and then use imgburn to create a protected iso. I do this quite often. When the key is known to anydvd you can mount the protected iso with virtual clone drive and do whatever you want with it. If using a friendly drive there's no real benefit to doing this over anydvd protected iso ripping as it'll do the same thing with far less work.
LibreDrive has *NOTHING* to do with decryption AT ALL. That's the part you're missing. It's not some "decryption be gone magic(tm)" like people seem to think it is. It does NOTHING with AACS AT ALL. What it DOES do, however, is disable bus encryption while the disc is in the drive. It does this by uploading firmware extensions to the drive's memory. These extensions go away once you eject the disc, but, if you enable LibreDrive mode for a disc, bus encryption is disabled, allowing you to create a proper protected ISO. (If you don't disable bus encryption, say on an official UHD drive like my NS60, the ISO you create is useless because on top of being AACS encrypted for which a title key can decrypt it once it's known, it encrypts it using bus encryption, as well, which is device specific). The folder backup you're talking about is using the title key to decrypt it while it's copying the contents. It's using LibreDrive to access the disc, but, again, LibreDrive has nothing to do with the decryption process. One additional benefit of LibreDrive is that it ignores the MKB revocation list. Meaning, if your drive gets updated with a new MKB, LibreDrive will still allow you to decrypt all your previous titles without having to wait for a new version of MakeMKV that supports the new MKB. That's useful.
Bus encryption should never be a problem.--
I'm not 100% sure though, when a disc is not supported by AnyDVD yet, if that means generally also bus-encryption on certain discs.