DivX stands for Digital Video Express, is a video format created by DivX Inc. that has the ability to compress the lengthy video segments to small sizes by maintaining high visual quality. In other words, it is a digital video codec compression and decompression format that is based on the MPEG-4. DivX is often referred as a family of video codecs, formats and software from DivXNetworks, Inc.
DivX was popular for downloading movies from the Internet. It actually uses lossy MPEG-4 compression, wherein the quality is balanced against file size. Hence, DivX could compress a DVD movie to fit on a CD, and a DivX HD could reduce an HD movie to fit on a DVD. The DivX software even provides tools for encoding in DivX and MPEG-4, a player for DivX and other video formats.
DivX software: DivX Plus for Windows, DivX Plus Web Player, DivX 7 for Mac, DivX Author, Community applications.
Benefits of DivX
The DivX format was originally created for DVD encoding since it offered higher quality at a low bit rate. It has a very high compression ratio, due to this it has become the most popular MPEG-4 compatible video compression technology. This enables size of the DVD at typically 7-10 times smaller than the standard DVD / Mpeg2 compression technology.
For example, a commercial DVD title that would take 4.7 gigabytes of storage can be easily converted to DivX format to less than 700 megabytes of storage with no loss of audio or video quality. This can then be archived on a cheap CD media.
As time rolled on, DivX also evolved into various formats with some updates and inclusion of new features. These formats are:
DivX Media Format (DMF): This format expanded the scope of DivX by adding many different features like Interactive video menus, multiple subtitles (XSUB), multiple audio track, multiple video streams, Chapter points, other metadata (XTAG), multiple format etc.
DivX Plus HD: This file type uses the standard Matroska media container format (.mkv) instead of .divx. These files contain an H.264 video bit stream, AAC surround sound audio, and various XML-based attachments.
DivX Profiles: These are subsets of MPEG-4 / AVI and H.264 / Matroska standards.
DivX Video on Demand (DivX VOD): It is a DivX's version of digital rights management (DRM) that allows content copyright holders to control distribution of videos.
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