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libdvdcss

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libdvdcss [1]
Developer(s)VideoLAN
Stable release
1.2.11 / November 15, 2011 (2011-11-15) [2]
Repository
Written inC
Operating systemGNU/Linux, BSD, BeOS
Windows 95/98/NT/2000
Mac OS X, Solaris, HP-UX
PlatformPortable
TypeLibrary
LicenseGNU GPL v2 [3]
Websitelibdvdcss at VideoLAN

libdvdcss (or libdvdcss2 in some repositories) is a free software library for accessing and unscrambling DVDs encrypted with the Content Scramble System (CSS). libdvdcss is part of the VideoLAN project and is used by VLC media player and other DVD player software such as Ogle, xine-based players, and MPlayer.

Comparison with DeCSS

libdvdcss is not to be confused with DeCSS. While DeCSS uses a cracked DVD player key to perform authentication, libdvdcss uses a generated list of possible player keys. If none of them works (for instance, when the DVD drive enforces region coding) a brute force algorithm is tried so the region code of a DVD is ignored. Unlike DeCSS, libdvdcss has never been legally challenged.

Distribution

Many GNU/Linux distributions do not contain libdvdcss (for example Debian, Fedora, SUSE Linux, and Ubuntu) due to fears of running afoul of DMCA-style laws, however they may provide the tools to let the user install it themselves. For example, it is available in Ubuntu through Medibuntu.

Distributions which come pre-installed with libdvdcss include BackTrack, CrunchBang Linux, LinuxMCE, Linux Mint, PCLinuxOS, Puppy Linux 4.2.1, Recovery Is Possible, Slax, Super OS, Pardus, and XBMC Live.

Usage

Libdvdcss alone is only a library and cannot play DVDs. DVD player applications, such as VLC Media Player, link to this library to decode DVDs. Libdvdcss is optional in many open-source DVD players, but without it, only non-encrypted discs will play.

References

  1. ^ http://www.videolan.org/developers/libdvdcss.html
  2. ^ http://download.videolan.org/pub/libdvdcss/last/
  3. ^ http://svn.videolan.org/filedetails.php?repname=libdvdcss&path=%2Ftrunk%2FCOPYING


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