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However, region-free DVD players, which ignore region coding, are also commercially available, [2] and many DVD players can be modified to be region-free, allowing playback of all discs. [3] DVDs may use one code, multiple codes (multi-region), or all codes (region free).
A disc-key can be recovered from its hash-value at a complexity of 2 25. The latter exploit recovers a disk-key from its hash-value in less than 18 seconds on a 450 MHz Intel Pentium III. The CSS design was prepared for the leak of a few player-keys. New discs would not contain an encrypted variant for these player-keys in the disc-key-block.
libdvdcss (or libdvdcss2 in some repositories) is a free and open-source 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 packages, such as Ogle, xine-based players, and MPlayer.
On or about January 13, a title key was posted on pastebin.com in the form of a riddle, which was solved by entering terms into the Google search engine. By converting these results to hexadecimal, a correct key could be formed. [27] Later that day, the first cracked HD DVD, Serenity, was uploaded on a private torrent tracker. [28]
DVD-Cops See CD-Cops in previous section. DVD region code Restricts region where media can be played by matching region number with configuration flag in DVD players. LaserLock Includes hidden directory on the CD containing corrupted data which will cause errors while being copied. SafeDisc (version 4) See SafeDisc (versions 1-5) in previous ...
It can be used to make a copy of any DVD protected with Content Scrambling System (CSS). The program can also record images to disc — functionality that the author has now incorporated into a separate product called ImgBurn. The software also allows a copy of a region-specific DVD to be made region free.
It also removes Macrovision, CSS, region codes, and user operation prohibitions. They also filed the suit DVD CCA v. Bunner against people who distributed DeCSS, seeking injunctions to stop further distribution based on trade secret claims. The injunction was eventually denied because CSS was no longer a secret by the time litigation occurred.
Free software implementations often lack features such as encryption and region coding due to licensing restrictions issues, and depending on the demands of the DVD producer, may not be considered suitable for mass-market use. DeVeDe (Linux) DVD Flick (Windows only) DVDStyler (Windows, Mac OS X, and Linux using wxWidgets.