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. It is designed as a user-friendly soluction for playing all your video files. You should be able to play all the popular movie formats and even some rare formats.
Latest Changes:

• Updated Media Player Classic to version 6.4.9.0
• Updated ffdshow to build 2006-04-22
• Updated XviD to version 1.2.0-dev build 2006-04-20
• Updated DivX decoder to version 6.2.2
• Updated DivX encoder to version 6.2.2
• Updated x264 VFW to rev. 506
• Updated VP7 to version 7.0.10.0
• Updated FLV splitter to version 1.0.0.1
• Added Vorbis ACM codec [version 0.0.3.6]
• Updated AC3ACM to version 1.21
• Minor changes