Many common video formats cannot be played on Ubuntu without the installation of additional software. This is due to legal restrictions. As with audio formats, due to legal and technical issues, many video formats are not supported by the default Ubuntu install. While support for some formats can be added at a later date, it is recommended that you convert important video files in unsupported formats to a format which is well supported in Ubuntu. As with the audio formats, there are many video converter applications available as free-of-charge downloads for Windows. Consider converting your video files to a format which is well-supported by Ubuntu, such as Ogg Theora. The following major video formats are not supported by default in Ubuntu: ..WMV ..RealVideo ..DivX ..QuickTime Thanks but NO THANKS. I'll stick with Windows.