http://tamnn.wordpress.com/2008/04/02/cam-r5-dvdrip-dvdscr-xvid-telesync/
R5
R5 refers to a specific format of DVD released in DVD Region 5, the former Soviet Union, and bootlegged copies of these releases that are distributed on the Internet. In an effort to compete with movie piracy, the movie industry chose to create a new format for DVD releases that could be produced more quickly and less expensively than traditional DVD releases. R5 releases differ from normal releases in that they are a direct Telecine transfer of the film without any of the image processing common on DVD releases, and without any special features. This allows the film to be released for sale at the same time that DVD Screeners are released. Since DVD Screeners are the chief source of high-quality pirated movies, this allows the movie studios to beat the pirates to market. In some cases, R5 DVDs may be released without an English audio track, requiring pirates to use the direct line audio from the film’s theatrical release. In this case, the pirated release is tagged with “.LINE” to distinguish it from a release with a DVD audio track.
The image quality of an R5 release is generally comparable to a DVD Screener release, except without the added scrolling text and black and white scenes that serve to distinguish screeners from commercial DVD releases. The quality is better than Telecine transfers produced by movie pirates because the transfer is performed usingprofessional-grade film scanning equipment.
Because there is no scene release standard for pirated R5 releases, they were variably tagged as Telecines, DVD Screeners, or even DVD rips. In late 2006, several release groups such as DREAMLiGHT, mVs, and PUKKA began tagging R5 releases with “.R5″ or r5 line (the line meaning it has direct english line audio) and suggesting that other groups do the same.