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.
References in periodicals archive ?
Live Streaming: One of the first formats compliant with MPEG-DASH, the newly unveiled DivX Live incorporates support for HEVC to enable a new generation of TV Everywhere streaming services that can offer high-quality access to linear programming and live event broadcasting from mobile devices.
HEVC 1080p HD, and DivX HEVC Ultra HD, which will be added to the current suite of encoding and delivery products to provide a scalable and secure ecosystem for content distributors.
Devices certified for the DivX Plus HD profile can play back personal and protected Hollywood entertainment in DivX (.
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.
Products that bear the DivX Certified logo have undergone a rigorous testing program to ensure a high-quality DivX media experience, including reliable video creation and playback, interoperability with other DivX Certified devices and the visual high-quality users expect from DivX.
Now available in Europe, it will enable consumers to easily play back DivX videos up to 1080p HD from the PC or the Internet through the USB slot.
By including DivX capability in a variety of different DVD devices, LG Electronics is proving their commitment to creating and distributing products that meet the needs of the millions of users all over the world who are clamoring for products that support DivX video playback," said Bill Holmes, Vice President of Consumer Electronics at DivX, Inc.
So, what lessons should the storage industry draw from Divx and MP3?
Yes, the DIVX discs were stripped-down, pan-and-scan products, with none of the cinephilic goodies piled onto normal DVDs.
DivX 10 enables consumers to play, create and stream the video formats that matter, including new HEVC video.
The DivX Certification program was launched in 2003 to provide consumer electronics manufacturers with the ability to add guaranteed, high-quality playback support for the popular DivX video format on devices.
Digital media company DivX Inc (Nasdaq:DIVX) and fabless semiconductor company MediaTek Inc announced on Monday the DivX Plus HD Certification of MediaTek's MT8530 chip.