K-Lite Codec Pack - a package of codecs, DirectShow filters and tools associated with them. This set differs from other similar packages, the lack of conflicts between codecs, easy to install and use that deservedly made him the most popular. The components of this set can make to play all the popular and the large number of rare video and audio formats.

Compare versions of the package:
K-Lite Codec Pack Basic - contains everything you need to play the most common video files such as AVI, MKV, MP4, OGM, or FLV. This package has the smallest.
K-Lite Codec Pack Standard - has everything to play most multimedia files. This package should be enough for the average user.
K-Lite Codec Pack Full - except codecs, filters and tools that are standard also contains all the necessary things for encoding video and audio. May be useful for advanced users and professionals.
K-Lite Mega Codec Pack - This version of the package contains all the codecs and programs that are included in the full version, plus QuickTime Alternative and Real Alternative.

Details:

Features of the package:
The latest versions of the best codecs.
All the components are chosen so that there were no conflicts between them.
Installation is very simple, if you wish, you can choose only those codecs and tools that you really need.
At any time you can completely or partially remove the package, leaving at the same time, no trace of his stay, including the registry keys.
Each pack is tested for the presence of possible conflicts between codecs and other programs.
K-Lite Codec Pack is trying to avoid problems between new and already installed codecs on your computer, and can even solve some of the existing ones.

Changelog:
Updated MPC-HC to version 1.7.7.0
Updated ffdshow to version 1.3.4533
Updated LAV Filters to version 0.62-58-gd8d8713
Updated VSFilter x64 to version 1.7.7.0
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Changelog: 10.8.5
Updated MPC-HC to version 1.7.7.128
Updated LAV Filters to version 0.63-5-g7e0ae79
Updated Xvid to version 1.3.3
Updated Codec Tweak Tool to version 5.9.2
Updated mediaInfo Lite to version 0.7.71
Updated GraphStudioNext to version 0.7.0.430
MPC-HC is now able to display embedded coverart
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Update 10.8.6
Updated LAV Filters to version 0.63-12-g62f5a08
Updated x264VFW to revision 2491
Updated Codec Tweak Tool to version 5.9.3
Updated Icaros to version 2.2.7b3

Software version: 10.8.5
Version Update: 10.8.6
Official Site: Codec Guide
Language: English

System requirements:

Windows 2000 | XP | Vista | 7 | 8
CPU: 1600 MHz

installation:

Just install ...