DMF, or DivX Media Format, is a multimedia container developed by DivX Inc. and released with the release of the DivX 6 update. DMF is at heart an extension of the AVI container that has been altered to allow more DVD-Video-like features to be supported for playback both on software DivX players and hardware that supports DivX technology. DMF has support for familiar features such as interactive motion menus, multiple video, audio and subtitle tracks and chapters.
Because of its similarities to the popular AVI container, DMF has kept backwards-compatibility to a degree with AVI. While some hardware might not be able to support the extra features that the DMF container offers, it will be able to play the main video and audio, as if playing from an AVI file. DMF usually has an extension of .divx.