K-Lite Codec Pack

A codec package that contains everything you need for video playback. It includes not only the basic codecs for DivX, XviD, Windows Media, 3vix, Intel Indeo, Ogg etc. It also includes auxiliary programs such as GSpot Codec Information to find out the codec directly from the movie (e.g. from *.avi), or VobSubStrip which can convert *.idx and *.sub subtitles.

You can choose which components to install when you install, this is a really useful package that will ensure both seamless playback of any movie and encoding.