DivX


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DivX

(1) A family of video codecs, formats and software from DivXNetworks, Inc., San Diego, CA (www.divx.com) that is popular for downloading movies from the Internet. Based on MPEG-4, DivX can compress a DVD movie to fit on a CD, and DivX HD can reduce an HD movie to fit on a DVD. The DivX software provides tools for encoding in DivX and MPEG-4, as well as a player for DivX, MPEG-4 and other video formats.

In the late 1990s, DivX was the first video codec for the Windows AVI container format that provided strong compression along with good picture quality. Enabling acceptable video to be streamed over the Internet, DivX quickly became the predominant video compression method for the AVI format (see AVI).

DivX Formats: AVI and MKV Containers
From its development as a codec, DivX evolved into a specification for the AVI container that uses the DivX or Xvid codecs and MP3 or AC-3 audio. Developers creating DivX Media Format (DMF) AVI files, which use an .AVI or .DIVX file extension, adhere to the DivX encoding guidelines. The DivX format also became popular on Divx-certified consumer electronics devices, including DVD and Blu-ray players, portable video players and mobile phones.

The newer DivX Plus HD format uses the MKV/Matroska container with H.264 video and AAC audio (see Matroska). DivX Plus HD supports multilingual subtitles, surround sound and multiple audio tracks and titles. Like the DivX format, encoders must comply with certain specifications.

Size Comparison
The following table of file sizes comes from an actual video that was available on the Web in multiple formats. Note that the iPod and PSP formats support only tiny screens. See XviD.

                            File SizeFormat                        (MB)

   PlayStation Portable (PSP)     42
   iPod                           55

   DivX                           61
   MPEG-4                        130
   QuickTime (MOV)               135
   Windows Media (WMV)           191



(2) (Divx) (DIgital Video EXpress) A DVD rental system rolled out in 1998 and taken off the market one year later due to poor sales. A joint venture of Circuit City and a Los Angeles entertainment law firm, Divx was a special type of DVD disc playable only in a Divx-enabled DVD player. Consumers paid a rental charge for the non-returnable disc, which was good for two days after its first viewing. Additional time as well as unlimited use could be purchased via modem from the Divx player. A major problem was that Divx discs registered to a specific machine could not be played on other Divx players.

(3) A copy of the DVD copy protection decryption algorithm that was lifted from a media player and passed around hacker sites. The Divx name was used in honor of the defunct Digital Video Express system.
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References in periodicals archive ?
James Hale, Managing Partner Parallax Capital Partners commented, "DivX has an established leadership position in the digital video market place widely recognized for their expertise and innovation driven by a strong management and delivery team.
To better understand the dynamics of the Internet, it is vital to closely investigate the movements and fluxes between idealism and commercialism when it comes to the development of standards such as MP3 and DivX. As we hope to show, some of these dynamics are better comprehended as relocations along a continuum rather than at opposite poles.
To develop DivX Plus Streaming, Rovi built upon core DivX(R) technologies recognized by millions of consumers around the world for delivering great video performance, visual quality, and multi-screen interoperability.
DivX creates, distributes, and licenses digital video technologies that span the "three screens" comprising today's consumer media environment, the PC, television, and mobile devices.
DivX Plus HD Certification is the premium level of certification available from DivX, optimized for consumer electronics products and supports the playback of all content created with DivX software.
Under the partnership, consumers who purchase the newly DivX Certified AQUOS LE820 TV line will be able to enjoy DivX HD 1080p videos in the DivX format using the TV's USB slot.
A USB 2.0 port and HD DivX support make it easy to watch high resolution video files stored on external hard discs, memory cards or other USB devices.
THIS great value twin screen DVD and DivX player comes with car adaptor (there's an AC one too) so rear passengers can watch their own screen.
The master screen features a side-loading DVD slot and USB port, and can play MP3, MP4 and DivX files.
Part of the 360's autumn Dashboard update - which also included support for video recorded in the DivX codec - the arrival of the movie download service gives the 360 a strong claim on the media hub title.