The K-Lite Mega Codec Pack

The K-Lite Mega Codec Pack is a free software bundle which includes the K-Lite Codec Pack Full and Real Alternative. Codec is short for Compressor-decompressor. Codecs are needed for encoding and decoding (playing) audio and video.
With the K-Lite Mega Codec Pack you can play almost all audio and video files there are. It also has encoding support. The very user-friendly installation is fully customizable, which means that you can install only those components that you want. You can also make an unattended installation.
This download is for the Mega package and is aimed at pro video users. The K-Lite Codec Pack has a couple of major advantages compared to other codec packs :
Changes K-Lite Mega Codec Pack 5.0.5 | August 5, 2009 :

• Updated ffdshow to revision 3054
• Updated AC3Filter to 1.62b
• Updated AC3File to 0.7b
• Updated FLV splitter to 1.2.1207.0
• Updated Gabest MPEG splitter to 1.2.1207.0
• Updated x264VFW to revision 1195
• Updated MediaInfo Lite to 0.7.20
• Added more file association options for audio file types
• Minor changes and improvements

Download : K-Lite Mega Codec Pack 5.0.5