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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.
Region-free players are DVD players shipped without the ability to enforce regional lockout (usually by means of a chip that ignores any region coding), or without this flag set. However, if the player is not region-free, it can often be unlocked with an unlock code entered via the remote control. This code simply allows the user to change the ...
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.
The drive may also support Regional Playback Control (RPC) to limit the playback of DVD-Video content to specific regions of the world (§3.3.26 [4]). RPC Phase II drives hold an 8-bit region-code and adhere to all requirements of the CSS license agreement (§6.29.3.1.7 [4]). It appears that RPC Phase II drives reject title-key requests on ...
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.
Newer drives use RPC-2 firmware, which enforces DVD region coding at the hardware level. See DVD region code#Computer DVD drives for further information. Some RPC-2 drives can be converted to RPC-1 with the same features as before by using alternative firmware on the drive, or on some drives by setting a secret flag in the drive's EEPROM .
Xbox (DVD) Two sets of media descriptors are used. Initially, and on typical DVD-ROM drives, only a short partition containing a brief DVD Video can be seen. The lead-out section of the disk stores a second set of media descriptors describing the bounds of the main partition. It also contains a partially-encrypted "security sector" used for ...