DivX is a free download that provides everything you need to enjoy high-quality digital videos on your computer, including HD H.264 (.mkv) videos with AAC audio and videos created using all previous versions of DivX technology. You can also play your DivX files (.divx, .avi) on millions of DivX Certified® devices today. Look for DivX Plus� HD Certified devices later this year that will support playback of all DivX and DivX Plus files, as well as .mkv (H.264/AAC) videos from the Internet.