Divx is the brand name of the world most popular video compression technology. At its core, it is a codec piece of software that compresses video from virtually any source down to a size that is transportable over the internet without reducing the original video visual quality.

Divx is a legal version of DivxJ(developed by bunch of hackers)  video encoding technology, released by company called DivXNetworks.

With Divx video technology, you can compress a DVD to a fraction of its original size. Divx video compression is so efficient that you can fit the entire contents of a DVD on a regular data CD with virtually no loss in quality.

Traditionally, video on the internet was grainy, low resolution and postage stamp-sized. Today all that is changing. Since the introduction of Divx video technology, video content providers finally have a real solution to deliver their creations to the world without sacrificing visual quality or shelling out major cash for extra bandwidth. Millions of people worldwide are already using their standard high speed connections to download feature-length movies from the internet in less than the time it takes to watch them.

Not only has Divx video technology enabled the fast and secure delivery of high quality, highly compressed digital video, it also frees digital video content from the confines of the computer monitor by allowing viewers to easily transfer it to a certified device and enjoy it right on the living room TV. With the full range of Divx certified devices flooding the market, you can now easily take that Divx movie created on your computer, pop it into your Divx Certified DVD player and enjoy it on your big screen TV. The Divx codec even lets you make movies specifically for your favorite device, be it portable (your personal video player for when you travel), High Definition (your fancy new HDTV), Handheld (your video-capable PDA) or Home Theater.

DivX, like many other MPEG-4 formats, can however be played with certain MPEG-4 compatible, stand-alone DVD/DivX players. With DivX video technology, you can store 50-120 minutes of relatively good quality video to one CD (740MB).

Nowadays, Divx has been a popular file format. Divx software has been wide used to create or watch high quality Divx movies. And there are many converters may help you to convert other format files to Divx, such as IMTOO MPEG Encoder, SUPER etc. If you want to transport video files in the internet, it will be feasible to convert it to Divx.