Blu-ray

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Blu-ray is the optical media successor to DVD. As a medium, it is designed to hold more storage. For multimedia, it is intended to store higher quality content than DVDs, such as movies and shows in 720p, 1080p video resolution and higher, plus audio tracks with higher bitrates and number of channels, such as DTS-HD Master.

Similar to DVDs, the file storage format for blu-ray discs is UDF. The content on the discs is also protected with DRM, namely AACS (Advanced Access Content System).

There are a number of applications in portage that can be used to access Blu-ray discs and media, including ones to bypass the encryption.

Device access

Important
Each user must be added to the cdrom group to access a hardware Blu-ray disc drive.

To check if a user has been already in the cdrom group:

user $groups
users cdrom

To add a user to the cdrom group:

root #gpasswd -a user cdrom

As with any time a user is added to a new group, they must either log out and back in as that user, or switch using su to gain new group abilities.

user $su - user
user $groups 
users cdrom

DRM

media-libs/libbluray will use media-libs/libaacs to bypass AACS encryption if compiled with the aacs use flag. It requires a KEYDB.cfg text file that has the keys necessary for decryption. List can be found in various places online.

The key file should be saved to the case sensitive filename at ~/.config/aacs/KEYDB.cfg

Disc information

Blu-ray discs have both "tracks", similar to DVD tracks, but also "playlists" as well. This can make it a bit confusing when trying to get information or rip media from a disc. Generally speaking, ripping a playlist will cover a common use case.

libbluray

Note
media-libs/libbluray needs to be compiled with the java USE flag to enable Blu-ray menus.

The package media-libs/libbluray contains a few programs to help display disk information.

Use bd_info to list details of a disc:

user $bd_info /dev/sr0
Using libbluray version 1.0.2
Volume Identifier   : GENTOO_ROCKS
BluRay detected     : yes
First Play supported: yes
Top menu supported  : yes
HDMV titles         : 4
BD-J titles         : 5
UNSUPPORTED titles  : 5
 
BD-J detected       : yes
Java VM found       : no
BD-J handled        : no
BD-J organization ID: 7fff8123
BD-J disc ID        : b484515373b51940820b165b97212b5a
 
 
AACS detected       : yes
libaacs detected    : yes
Disc ID             : 1460B1469A66481964B3023486A1945806653567
AACS MKB version    : 7
AACS handled        : yes
 
BD+ detected        : no
 
Application info:
  initial mode preference : 2D
  3D content exists       : No
  video format            : ignored (0x0)
  frame rate              : ignored (0x0)
  provider data           : '                           ZNURT'
 
No disc library metadata

Use bd_list_titles to get details of each title / track as well as the playlists:

user $bd_list_titles /dev/sr0
Main title: 6
index:   1 duration: 00:01:57 chapters:   2 angles:  1 clips:   1 (playlist: 00000.mpls) V:1 A:1  PG:6  IG:0  SV:0 SA:0
index:   2 duration: 00:01:06 chapters:   2 angles:  1 clips:   1 (playlist: 00001.mpls) V:1 A:1  PG:6  IG:0  SV:0 SA:0
index:   3 duration: 00:02:29 chapters:   2 angles:  1 clips:   1 (playlist: 00002.mpls) V:1 A:1  PG:6  IG:0  SV:0 SA:0
index:   4 duration: 00:01:13 chapters:   2 angles:  1 clips:   1 (playlist: 00003.mpls) V:1 A:1  PG:1  IG:0  SV:0 SA:0
index:   5 duration: 00:05:12 chapters:   2 angles:  1 clips:   1 (playlist: 00004.mpls) V:1 A:1  PG:6  IG:0  SV:0 SA:0
index:   6 duration: 00:14:16 chapters:   2 angles:  1 clips:   1 (playlist: 00005.mpls) V:1 A:1  PG:6  IG:0  SV:0 SA:0
index:   7 duration: 00:00:23 chapters:   2 angles:  1 clips:   1 (playlist: 00009.mpls) V:1 A:0  PG:0  IG:0  SV:0 SA:0
index:   8 duration: 00:00:11 chapters:   2 angles:  1 clips:   1 (playlist: 00010.mpls) V:1 A:1  PG:0  IG:0  SV:0 SA:0
index:   9 duration: 00:00:11 chapters:   2 angles:  1 clips:   1 (playlist: 00014.mpls) V:1 A:0  PG:0  IG:0  SV:0 SA:0

bluray_info

The package media-video/bluray_info displays details about the disc as well, with syntax and output format similar to the old media-video/lsdvd program.

user $bluray_info /dev/sr0
Disc Title: GENTOO_ROCKS
Title: 001, Playlist: 0000, Length: 00:01:57.11, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 06, Filesize: 00091 MB
Title: 002, Playlist: 0001, Length: 00:01:06.56, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 06, Filesize: 00053 MB
Title: 003, Playlist: 0002, Length: 00:02:29.98, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 06, Filesize: 00121 MB
Title: 004, Playlist: 0003, Length: 00:01:13.10, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 01, Filesize: 00057 MB
Title: 005, Playlist: 0004, Length: 00:05:12.81, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 06, Filesize: 00251 MB
Title: 006, Playlist: 0005, Length: 00:14:16.85, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 06, Filesize: 00791 MB
Title: 007, Playlist: 0009, Length: 00:00:23.27, Chapters: 002, Video streams: 01, Audio streams: 00, Subtitles: 00, Filesize: 00014 MB
Title: 008, Playlist: 0010, Length: 00:00:11.92, Chapters: 002, Video streams: 01, Audio streams: 01, Subtitles: 00, Filesize: 00010 MB
Title: 009, Playlist: 0014, Length: 00:00:11.97, Chapters: 002, Video streams: 01, Audio streams: 00, Subtitles: 00, Filesize: 00006 MB
Main title: 6

Ripping Blu-rays

Two programs in portage can be used to copy Blu-ray titles and playlists to disc: namely, media-libs/libbluray again, which is open source and command line only, and media-video/makemkv which is partially open source and has both command line and GUI applications.

libbluray

The media-libs/libbluray package provides the bd_splice command in order to copy a title or playlist to disk. The index number from above will be needed, using as examples bd_list_titles or bluray_info for references.

The container for multimedia files are MPEG2 transport streams, so it should be saved with an m2ts extension. For example:

user $bd_splice -t 6 /dev/sr0 bluray_title_06.m2ts

ffmpeg

Blu-rays can be accessed directly with ffmpeg if it compiled with the bluray USE flag.

Discs or ISOs can be accessed directly using -playlist # bluray:/device_name syntax.

For example, to copy playlist 800 (which is often the main feature on movies) on your device /dev/sr0 to your filesystem:

user $ffmpeg -playlist 800 -i bluray:/dev/sr0 -codec copy bluray_playlist.mkv

Scan the disc for the available playlists:

user $ffprobe bluray:/dev/sr0
Note
When scanning a disc, ffmpeg lists playlists that have a minimum of 3 minutes. Use bd_list_titles or bluray_info to see all the playlists.

MakeMKV

MakeMKV is a partially-closed source program, and does not require a KEYDB.cfg file to decrypt disc access. It has both a command-line application, makemkvcon and a Qt application MakeMKV.

MakeMKV is free while in beta mode, and a registration key is needed to activate it. You can always get the latest key published from upstream here. A new one is released about every three months.

Important
MakeMKV requires the sg kernel module to operate, SCSI generic support, CONFIG_CHR_DEV_SG.
Note
The title and playlist indexes displayed by MakeMKV and libbluray do not match.

Command Line

makemkvcon, the command line application, can rip content from three sources: a disc in your Blu-ray drive (a character device on your system, such as /dev/sr0), a mounted Blu-ray filesytem, and a copied Blu-ray image. Documentation for makemkvcon is located on their webpage. No man page is shipped with the package, but a user-created one is available in HTML format here.

Copy the first title from the disc (remember that they are zero indexed) to the current directory:

user $makemkvcon --minlength=0 mkv dev:/dev/sr0 0 .

Copy the first title from a mounted directory:

user $makemkvcon --minlength=0 mkv file:/mnt/bluray 0 .

Copy the first title from an image:

user $makemkvcon --minlength=0 mkv iso:bluray_movie.iso 0 .

GUI

The program makemkv is a Qt application, and quite self-explanatory once started.

Playback

Packages in portage that can playback Blu-rays include media-video/vlc, media-video/mplayer, ffplay (media-video/ffmpeg) and media-video/mpv.

VLC menu support

Blu-rays can be played with menu support, if media-libs/libbdplus and dev-java/openjdk-jre-bin are installed.

Important
Make sure that user-vm has been set for the user running the instance of VLC with eselect java-vm.

Screenshots available here and here.

Addendum for Region B Blu-ray

Many Blu-rays are localized. That is, the main feature is in at least three parts:

  • The opening credits (in several languages).
  • The closing credits (in several languages).
  • The feature, less the opening and closing credits.

list_titles and bluray_info may not guess the title needed to rip for the current locale.

Audition the longest/largest titles before making the rip.

See also

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