mostly used codecs embedded.
If you still have the problem with video playback try following:
- For Windows: install K-lite codec pack or similar. You can download it from http://www.codecguide.com/download_kl.htm
- For Linux: the best solution is to read your distribution documentation to know how to install video codecs. The easiest way is to install mplayer and xine players - most part of Linux distribution kits install codecs as dependencies for these players. For Debian Derivatives you firstly need to enable restricted repositories. Probably you will need to add new package repositories to install specific codecs (e.g. http://ubuntuforums.org/showpost.php?p=408430&postcount=3 - be careful with this solution. You should be familiar with apt to use this.)
Mac OS X by default have installed most of codecs you need. But if you have a problem with playback on Mac OS X you can try to install DivX codecs fromhttp://www.divx.com/en/software/mac