Some files require an additional software to be processed.

AVI Files

The AVI codecs that was used to encode files should be installed.
The most popular AVI codecs:
DivX - http://www.divx.com/divx/
Xvid - http://www.xvid.org/


WMV Files

DirectX 9 should be installed. You can download it here:
http://www.microsoft.com/windows/directx/

Windows Media 9 should be installed. You can download it here:
http://www.softboard.net/codecs/wm9.exe

Please note that Windows XP already has it.


RealVideo Files

The free RealVideo codec should be installed. You can download it here:
http://www.softboard.net/codecs/rv.exe

