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bluraybackup is a command line program to backup Blu-ray Disc Movies
(BDMV), inspired by dvdbackup [1], developed in ANSI C (C89) following
the suckless philosophy [2].
It makes a decrypted copy of the whole Blu-ray Disc Movie or it extracts
a decrypted version of a specific BDMV stream. Since Blu-ray is an
especially nasty format [3], this software may not work with all discs.
It both depends on your KEYDB.cfg file and on the BD+ generation
(version).
bluraybackup relies on libbluray [4] to read disc data and on libaacs
[5] to remove Advanced Access Content System (AACS) encryption. To build
you need libbluray and its headers. To successfully decrypt a Blu-ray
Disc Movie you both need libaacs installed and a KEYDB.cfg file,
containing your disc keys.
Moreover, if your disc is plagued by BD+ as well, you need to install
libbdplus [6]. BD+ is a form of copy obstruction, which consists in
writing video streams to disc with small errors. These errors get fixed
during playback by a virtual machine embedded in official players, only
if the player keys are verified by the same virtual machine. libbdplus
is an implementation of the BD+ virtual machine features. However it
doesn't support all the BD+ generations. Since libbdplus 0.2.0, it's
possible to bypass BD+ emulation, using cached tables to fix the broken
streams.
See also Blu-ray on ArchWiki [7].
[1] https://dvdbackup.sourceforge.net/
[2] http://suckless.org/philosophy/
[3] https://www.defectivebydesign.org/topic/bluray
[4] http://www.videolan.org/developers/libbluray.html
[5] http://www.videolan.org/developers/libaacs.html
[6] http://www.videolan.org/developers/libbdplus.html
[7] https://wiki.archlinux.org/title/Blu-ray
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