K-Lite Codec Pack is a collection of codecs and related tools. Codec is short for Compressor-Decompressor. Codecs are needed for encoding and decoding (playing) audio and video. This Codec Pack is designed as a user-friendly solution for playing all your movie files. You should be able to play all the popular movie formats and even some rare formats.

The mega variant has almost the same contents as the full variant, but additionally contains Real Alternative and some extra VFW/ACM codecs.

Changes K-Lite Mega Codec Pack 5.8.0 | 2010-03-10:
- Updated Media Player Classic Home Cinema to version 1.3.1748.0
- Updated Media Player Classic (regular) to version 6.4.9.1 rev. 107
- Added translations for MPC-HC
- Updated LAME MP3 ACM codec to version 3.98.3
- Updated RealMedia components to version 12.0.0.614
- Updated Codec Tweak Tool to version 4.2.2
- Updated Win7DSFilterTweaker to version 3.0
- Updated MediaInfo Lite to version 0.7.29
- Tweaks applied by Win7DSFilterTweaker can now be automatically undone during uninstall
- Minor changes