K-Lite Codec Pack is a freeware set of audio and video codecs needed for DirectShow based players such Media Center or Windows Media Player.
The author’s official site is CodecGuide.com and it explain K-Lite tools collection with these words:
The K-Lite Codec Pack is a collection of DirectShow filters, VFW/ACM codecs, and tools. Codecs and DirectShow filters are needed for encoding and decoding audio and video formats. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your audio and movie files. With the K-Lite Codec Pack you should be able to play all the popular audio and video formats and even several less common formats.
This codecs collection is developed as a user-friendly solution for playing all your media. K-Lite components are updated frequently and carefully selected by codec experts. The software automatically alerts the user when updates are available.
There are four version of K-Lite: Basic, Standard, Full, Mega.
- The Basic version is suitable for users who want to play back media in the most common formats, such as: AVI, MKV, Ogg, MP4, FLV, WebM;
- Standard can be useful for those who want a more complete codecs support. Media Player Classic and MediaInfo Lite are included. This version is suitable for average users.
- Full package is for users working on video editing and encoding.
- Mega version includes all Full package features, plus tools like GraphStudioNext, ACM/VFW codecs such as x264VFW and Lagarith and extra DirectShow filters.
You can pick and download your K-Lite preferred version visiting the official page.