DivX is video encoding technology, released by company called DivXNetworks. The DivX codec is based on the MPEG-4 compression standard. This codec is so advanced that it can reduce an MPEG-2 video (the same format used for DVD or Pay-Per-View) to ten percent of its original size.
DivX® [da?v'eks] is a video codec created by DivX, Inc. (formerly DivXNetworks, Inc.), known for its ability to compress lengthy video segments into small sizes and has been the center of controversy because of its use in the replication and distribution of copyrighted DVDs. Many newer DVD players are able to play DivX movies.
DivX is not to be confused with DIVX, an unrelated attempt at a new DVD rental system employed by the US retailer Circuit City. Early versions of the DivX codec were named "DivX ;-)", where the winking emoticon was a tongue-in-cheek reference to the failed DIVX system.
A typical feature-length movie on DVD is around 7 gigabytes in size; with DivX this can be compressed to around 700 megabytes which fits on a CD-ROM with minimal loss in quality. Various programs are available which can produce a DivX file from a normal video DVD (this process is known as "ripping"). The resulting file can then be stored on hard disk, burned on optical media, or shared on peer-to-peer networks.
View How to rip DVD to DivX.
How to convert DivX to DVD.