DivX

DivX is a registered trademark corresponding originally to a codec video owner based on MPEG-4 proposed by DivX Inc. (in the past DivXNetworks, Inc.), known for its capacity with to compress the long ones and large (several gigaoctets) video files in files much lighter (a few hundred megabytes). It was in the center of controversies because of its use for to copy and distribute films extracted from DVD to the reserved right .

DivX should not be confused with DIVX, term without any bond, attempt to create a system paying of hiring of DVD of the store chain Circuit City with the the United States. At its beginnings, the codec DivX was more exactly named DivX; -) the hoe having been added to create a humorous reference to system DIVX from Circuit City, already definitively abandoned.

Principle

A film on support DVD, compressed in MPEG2, generally occupies between 4 and 8 Gigaoctet S; with DivX, this same film can be compressed on approximately 0,7 gigaoctet for a ninety minute old film, which makes it possible to have approximately six films in good quality on a DVD of 4,7 Go is approximately 9:30. For such a compression, the loss of quality is however tiny, except possibly for the scenes of fast action. Various programs are available to create a DivX file starting from a DVD. The file can then be stored on any support having sufficient space available.

History

DivX 3.11 and the previous models generally refer to a version “pirated” of codec of the time of Microsoft (MPEG-4 modified). DivX was created in the neighborhoods of 1999 with Montpellier by the French Jerome Rota (known under the pseudonym of Gej). The codec of Microsoft, initially envisaged for the encapsulation in a format of streaming ASF was transformed to allow its storage inside files AVI - it is the codec DivX 3.11.

The company created by Jerome Rota, DivXNetworks, Inc., produced thereafter a version 4 of the codec completely independent of the codec of Microsoft (and its version 3.11) in order to avoid problems with the firm of Redmond. DivXNetworks asked for the deposit of a Brevet for its new codec, which follows the certification of the standard MPEG4 Advanced Simple Profiles.

The codec DivX is available in remote loading since the site of DivXNetworks, Inc. for the operating systems Windows (XP, 2000, ME, 98), GNU/Linux and Mac OS X.

It is not a Free software and its Source code is not available, but a public version - called OpenDivX - was placed at the disposal by DivXNetworks with the beginning of the year 2001.

Xvid was then created following a controversy on the real intentions which DivXNetworks had when it published OpenDivX: some indeed showed it to have launched the project with an only aim of collecting ideas to then re-use them in the codec DivX 4. Xvid, free software this time, arrived without question at maturity, is now maintained by a group independent and opening on several ramifications of studies and work. Today, OpenDivX and Project Mayo disappeared.

Innovations of version 6

In addition to an improved coding and a compression, version 6 of DivX adds a container - appearance of the extension .divx confirming it - allowing the management of various soundtracks (multilingual), the subtitles, the chapitrages and the menus interactive, bringing DivX to the level of the DVD as for the comfort of use. Compatibility with the readers of living room remains however total, certain apparatuses knowing to read the additional tracks its and the subtitles without particular update.

This version is available for Windows XP and 2000, Mac OS X (6.6), and GNU/Linux; for the systems Windows ME/98, only the codec DivX 5.2.1 is currently available.

Version 6.6.1 of the pack put on line on September 13rd, 2007 brings a new software of audio improvement accompanying DivX Player, the DFX Audio Enhancer® worked out by Power Technology (already present on many other readers), making it possible to control and correct the sound on five criteria: fidelity, environment, the 3D surround, the dynamic boost and thelow one. This software, paying (11,89 EURO including all taxes), is functional in test during thirty days.

On his side, the reader DivX Player, since version 6.5.0, recognizes and can read the files of subtitles to the format subrip (.srt) placed in the same file as the video file and bearing the same name. The color of the subtitles can be parameterized as well as a shift with the reading.

Composition of the elements

  • codec DivX in version 6.7.0 (September 20th, 2007)
  • Lecteur DivX Player in version 6.6.0 (September 20th, 2007)
    • Programme of improvement of its DFX
    • Lecteur DivX Player in version 2.0.0 for Mac OS X (May 30th, 2007) does not make it possible (still) to read the subtitles nor to choose the band sound.
  • Coder DivX Converter in version 6.5.1 (September 13rd, 2007)
  • DivX Web Player in version 1.3.1 (September 13rd, 2007)

Characteristics of DivX Media

  • Small interactive videos
  • Subtitling XSUB™
  • multiple audio Tracks
  • Chapitrage
  • video Beacons XTAG™
  • Extension of the files in .divx

Elements of the packs DivX

  • Pack DivX for Windows or Mac Pro: reading, coding of all the DivX formats (paying).
  • Pack DivX for Windows or Mac: reading of all the DivX formats (free).

Remote loading

  • different the packs from the codec is available on the official site of DivX Networks.

See too

External bonds

  • DivX.com
  • DivX, Inc.
  • video Interview of Jerome Rhotat, creator of video Divx

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