QuickTime Movie Files (.mov)

This is a digital video format for Macintosh (OS X) but is also viewable on Microsoft Windows and Linux if the correct software is installed.

Mpeg1 Movie Files (.mpg)

This video format is most common because it can be viewed on OS X, Windows and Linux without the need to install additional software. It also offers good quality for a relatively small file size.

Windows media Format (.wmv)

This video format can only be viewed on Microsoft Windows.