K-Lite Codec Pack is a collection of codecs and related tools. Codecs are required to encode and/or decode (play) audio and video. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play 99% of all the movies that you download from the internet. The K-Lite Codec Pack works on Windows 2000/XP/2003/XP64/Vista.

K-Lite Codec Pack Full contains even more codecs. It also has encoding support for the various formats. This package is for power users and people who do their own encodings.