@irs1, how about if your read the existing posting in a thread becfore you post?!
This topic thread is not about the DivX 6.x codec or any other codec for that matter. Read the post-script if this post on what you should have done!
This topic thread is about DMF (DivX Media Format) support. DMF is a video
container format (and a container can contain any video codec or audio codec), just like
AVI,
MVK and OGM. DMF is a container format from
DivX, Inc. that uses the extension .divx, a container which like DVD-Video supports interactive menus, embedded subtitles and multiple audio-tracks. To get a "DivX Ultra Certification" of you DivX player it must fully support the DMF container format (and thus be capable of displaying and navigating the menu, and switching between the different subtitles and audio-tracks). DMF is however a closed source
proprietary format, meaning that you have to use prebuilt libraries with the approval from the creator to use them. Also, DMF is not very well documented so it would be very hard to
reverse-enginner it to make a open source version of it that XBMC could use. However
DivX, Inc. made the DMF container partially backwards-compatible with the
AVI container so all players that can play .AVI files (including XBMC) can play .DIVX (DMF container) files with some limitations, those limitations being that the player can't access/display the interactive menu, nor displaying the subtitles nor switching between the audio-tracks and in fact only being able to play the main-video file (usually only the main movie if it also contains other clips like trailers and special features like DVD-Video movies does).
PS! So your post is off-topic since you ask about a codec and not a container. Please read
this (link), however also understand that DivX is just a derivitive of the
MPEG-4 ASP (Advanced Simple Profile) standard so it should be able to be decoded by any MPEG-4 ASP decoder, and like you read
here (link), XBMC uses MPlayer which in turn uses FFmpeg to decode all MPEG-4 ASP encoded video. FFmpeg should be able to decode DivX codec version 6.2.5, so your problem is probebly not that XBMC can't play the file but instead that the file is somehow corrupt. Please post a new topic thread in our Support Forum after reading the online-manual (see my signature bellow) with a full description and a log from debug-mode. ...by the way know that
DivX, Inc. are in the process of replacing their Divx Converter tool with a new software called "Dr. DivX", see
labs.divx.com