Editing DivX (section)

===DivX Media Format (DMF)===
<!-- [[Template:Compression formats]] links here. -->
{{Infobox file format
| name = DivX Media Format
| icon = DivX container.png
| logo = 
| screenshot = 
| caption = 
| extension = .divx
| mime = 
| type code = DIVX, DX50
| uniform type = 
| magic = 
| owner = [[DivX, Inc.]]
| type = [[Container format (digital)|Container format]]
| container for = MPEG-4 Part 2–compliant video
| contained by = 
| extended from = [[Audio Video Interleave|AVI]]
| extended to = 
| standard = 
| url = 
| released = {{start date and age|2005|06|15|df=y}}
| free = No
}}

DivX 6 expanded the scope of DivX from including just a codec and a player by adding an optional [[Container format (digital)|media container format]] called "DivX Media Format" ("DMF")<ref>{{cite web
 |url        = http://investors.divx.com/releasedetail.cfm?ReleaseID=210522
 |archive-url = https://web.archive.org/web/20061026003441/http://investors.divx.com/releasedetail.cfm?ReleaseID=210522
 |url-status   = dead
 |archive-date = 26 October 2006
 |title      = DivX Ultra Certification Program
 |publisher  = DivX, Inc.
 |access-date = 7 April 2010
}}</ref> (with a .divx extension) that includes support for the following [[DVD-Video]] and [[VOB]] container like features. This media container format is used for the [[MPEG-4 Part 2]] codec.

This new DivX Media Format also came with a "DivX Ultra Certified" profile, and all "Ultra" certified players must support all DivX Media Format features. While video encoded with the DivX codec is an MPEG-4 video stream, the DivX Media Format is analogous to media container formats such as Apple's QuickTime. In much the same way that media formats such as DVD specify MPEG-2 video as a part of their specification, the DivX Media Format specifies MPEG-4-compatible video as a part of its specification. However, despite the use of the ".divx" extension, this format is an extension to the AVI file format. The methods of including multiple audio and even subtitle tracks involve storing the data in [[RIFF (File format)|RIFF]] headers and other such AVI hacks which have been known for quite a while, such that even [[VirtualDubMod]] supports them. DivX, Inc. did this on purpose to keep at least partial [[backward compatibility]] with AVI, so that players that do not support the new features available to the .divx container format (like interactive menus, chapter points and XSUB subtitles) can at least play that primary video stream (usually the main movie if the DMF file contains multiple video streams like special features like bonus materials). Of course, the DivX codec and tools like [[Dr. DivX]] still support the traditional method of creating standard AVI files.

Since version 5.0 of DivX, the [[FourCC]] (identifying code) for the DivX MPEG-4 Part 2 codec is DX50.<ref>{{Cite web |url=http://www.fourcc.org/codecs.php#letter_d |title=Fourcc.org Online list of FourCC codes |access-date=14 October 2019 |archive-date=23 May 2009 |archive-url=https://web.archive.org/web/20090523080617/http://www.fourcc.org/codecs.php#letter_d |url-status=dead }}</ref> Previously it used DIVX.