Technically it is possible to squeeze your DVD contents to a CD or to
your hard disk in various audio/video formats. The process involves
two steps i.)Decodeing the data files on the DVD and storeing it on
your hard disk ii.)Encoding or copying the data back to a CD by
compressing it using codecs like MPEG or DivX. Ripping a DVD to xvid
or divx avi is really quite easy, if you have the right tools....

http://askwiki.blogspot.com/2007/04/...te-dvd-on.html

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