Xvid is a program to compress/decompress MPEG-4 video based in blocks.
Using advanced algorithms, it can provide excellent picture quality even at high compression ratios.
The reason to compress videos is simple: to reduce bandwith usage when you download or upload your video files through the Internet. The application produces smaller files, so you can put more contents on your hard disk or CD-ROM without quality loss.
The program´s similar to DivX, since Xvid is an open source project distributed under the terms of the GNU General Public License (GPL). That means that it´s free to use, and everyone can contribute to its development.
Xvid final 1.1.3 is the latest release of this codec.
A simple installation will allow all your media software to play Xvid-compressed video, using Xvid directly, with no participation from you. You will be able to play every DivX-compressed video, too.
Normally, you will not need to adjust any settings, but you can configure both the encoder and the decoder through the provided applications.