The K-Lite Codec Pack has a couple of major advantages compared to other codec packs:
- It it always up-to-date with the latest versions of the codecs.
- It is very user-friendly and the installation is fully customizable, meaning that you can install only those components that you really want.
- It has been very well tested, so that the package doesn't contain any conflicting codecs.
- It is a very complete package, containing everything you need to play your movies.

Avidemux is avideo editor designed for simple cutting, filtering and encoding tasks. It supports many file types, including AVI, DVD compatible MPEG files, MP4 and ASF, using a variety of codecs. Tasks can be automated using projects, job queue and powerful scripting capabilities.
Avidemux is available for Linux, BSD, Mac OS X and Microsoft Windows under the GNU GPL license. The program was written from scratch by Mean, but code from other people and projects has been used as well. Patches, translations and even bug reports are always welcome.
Avidemux has built-in subtitle processing, both for Optical Character Recognition (OCR) to soft subtitle formats (VobSub sub, ass and srt) and various hard subtitle VobSub capabilities. While it is primarily a GUI program, Avidemux can also be run from and through the command line (which can also be used for batch processing and debugging).That applications is Avidemux! And now the "official" version: Avidemux is a free video editor designed for simple cutting, filtering and encoding tasks. It´s graphical user interface looks pretty similar to VirtualDub and most features known from VirtualDub are available too. Avidemux natively supports a great number of file types, such as AVI, MPEG, VOB, TS, MP4, ASF, OGM, MKV and FLV. At the same time Avidemux natively supports a wide range of Video/Audio formats, including MPEG-1, MPEG-2, MPEG-4 ASP, H.264/AVC, DV, HuffYUV, MP3, AAC, AC-3 and Vorbis. Tasks can be automated using projects, job queue and powerful scripting capabilities. Video-DVD or (S)VCD compliant streams can be created with easy-to-use "Auto" wizards. Multi-threading is supported!

The Advanced Codec Pack is mainly for use by encoders, it features a large number of codec's/filters and also some additional tools.
The package will enable you to playback and encode most major formats currently available.

Installation of the package is made easy for users through the informative menu's.
Options that may cause problems have a warning in the description pane, the installer will also unselect options that my cause conflicts.

DivX 6.2.2 Pro Video Codec - By DivXNetworks.
DivX Web Player browser plugin.
XviD 1.1 Video (Encoder) Codec - Koepi's 30/12/05 Build
ffdshow Video Codec 20051129 by Milan Cutka.
x264 h.264/AVC VFW Video (Encoder) Codec Revision 522.
Microsoft - Windows Media 9 Video Codec 9.0.1.369.
On2 Technologies VP7 Video (Decoder) Codec 7.0.8.
On2 Technologies VP6 Video Codec 6.4.2.

Changes K-Lite Mega Codec Pack 4.3.1 | (2008-11-14):
* Updated Media Player Classic to version 6.4.9.1 rev. 85
* Updated Media Player Classic Homecinema to version 1.1.891
* Updated ffdshow to revision 2322
* ffdshow is now able to decode E-AC3 and Dolby TrueHD audio. You must select ffdshow as AC3 decoder to be able to use that functionality
* Updated DC-Bass Source to version 1.2.0
* Updated FLV splitter to version 1.0.0.5
* FLV files that contains H.264 video and AAC audio are now fully supported
* Updated DivX to version 6.8.5
* Updated x264VFW to revision 1024
* Added GraphStudio version 0.2.9.0
* Removed GraphEdit
* Updated MediaInfo Lite to version 0.7.7.8
* Minor changes

K-Lite Codec Pack is a collection of VFW/ACM codecs, DirectShow filters and tools. Codecs and DirectShow filters are needed for encoding and decoding (playing) 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.

About three versions of the K-Lite Codec Pack:

1. Standard contains everything you need to play all the most commonly used audio and video formats. This package should be enough for the average user.

Changelogs for K-Lite Codec Pack Standard
Changelog 4.1.0 -> 4.1.4 | (2008-08-08)
* Updated Media Player Classic to version 6.4.9.1 rev. 73
* Updated ffdshow to revision 2067
* Minor changes

K-Lite Codec Pack is a collection of VFW/ACM codecs, DirectShow filters and tools. Codecs and DirectShow filters are needed for encoding and decoding (playing) 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. The K-Lite Codec Pack works on Windows 2000/XP/2003/XP64/Vista.

There are four versions of the K-Lite Codec Pack: Basic, Standard, Full and Corporate.
• Basic contains only the most essential things. It contains everything you need to be able to play the two most popular and widespread formats: DivX and XviD. With this you should be able to play DVDrips and TVrips.
• Standard contains everything you need to play all the commonly used formats. This package should be enough for the average user.
• Full supports even more audio and video formats. It also has encoding support for various formats. This package is for power users and people who do video editing/encoding.
• Corporate Edition is a special version for use in a corporate environment. It is similar to the Full version, minus a few items, but almost just as powerful. It has a strong focus on open-source software.

K-Lite Codec Pack is a collection of codecs, DirectShow filters and tools. Codecs and DirectShow filters are needed for encoding and decoding (playing) audio and video formats. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play all the popular audio and video formats and even some rare formats. The K-Lite Codec Pack always very up-to-date with the newest (and/or best) versions of the components. The installation is fully customizable, meaning that you are able install exactly those components that you really want. Uninstallation removes all files and registry entries created by the pack. It is extremely easy to make a fully customized unattended installation. It tries to avoid potential problems with existing codecs and even fixes some problems. The pack is able to detect broken codecs and filters on your system, and remove them for you. It is a very complete package, containing everything you need to play your movies. Suitable for both novice and expert users. The K-Lite Codec Pack works on Windows 2000/XP/2003/XP64/Vista.

Features of K-Lite Mega Codec Pack 3.9.0:

Player:
* Media Player Classic [version 6.4.9.1 rev. 49]

ffdshow:
* ffdshow [revision 1937]
* ffdshow VFW interface
* extra plugins

DirectShow video decoding filters:
* XviD [version 1.2.0-dev build 2008-01-10]
* DivX [version 6.8.0.0]
* On2 VP6 [version 6.4.2.0]
* On2 VP7 [version 7.0.10.0]
* MPEG-2 (Cyberlink) [version 8.1.0.1513]

K-Lite Codec Pack is a collection of codecs and DirectShow filters. Those components are needed for encoding and decoding various audio and video formats. This Codec Pack is designed as a user-friendly solution for playing all your movie files.

K-Lite Mega Codec Pack combines the contents of two packs: K-Lite Codec Pack Full and Real Alternative.

ChangeLogs:
Updated Media Player Classic to version 6.4.9.1 rev. 34
Updated ffdshow to revision 1805
Updated x264 VFW codec to revision 721bm
Updated madFLAC to version 1.7
Updated FLV splitter to version 1.0.0.4
Added MONOGRAM AMR splitter (version 0.9.0.1)
Removed RadLight Musepack filter

K-Lite Codec Pack is a collection of codecs and related tools. Codecs are required to encode and/or decode (play) audio and video. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play 99% of all the movies that you download from the internet.

Features of K-Lite Codec Pack 2.87 FULL version :

Player:
• Media Player Classic [version 6.4.9.0+ SVN build 2007-03-25]

ffdshow:
• ffdshow [rev. 1076]
• ffdshow VFW interface
• extra plugins

DirectShow video filters:
• XviD [version 1.1.2]
• DivX [version 6.5.1.0]
• On2 VP6 [version 6.4.2.0]
• On2 VP7 [version 7.0.10.0]
• MPEG-1 / MPEG-2 (Cyberlink) [version 6.0.0.3402]
• MPEG-1 / MPEG-2 (DScaler5) [version 0.0.8.0]
• MPEG-1 / MPEG-2 (Gabest) [version 1.0.0.3]
• MPEG-1 / MPEG-2 (MainConcept) [version 1.0.0.78]
• MPEG-1 / MPEG-2 (Ligos) [version 4.0.0.77]

K-Lite Codec Pack is a collection of codecs, DirectShow filters and tools. Codecs and DirectShow filters are needed for encoding and decoding (playing) audio and video formats. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play all the popular audio and video formats and even some rare formats.
The K-Lite Codec Pack always very up-to-date with the newest (and/or best) versions of the components. The installation is fully customizable, meaning that you are able install exactly those components that you really want. Uninstallation removes all files and registry entries created by the pack. It is extremely easy to make a fully customized unattended installation. It tries to avoid potential problems with existing codecs and even fixes some problems. The pack is able to detect broken codecs and filters on your system, and remove them for you. It is a very complete package, containing everything you need to play your movies. Suitable for both novice and expert users.

Features of K-Lite Mega Codec Pack 1.69 :

Player:
• Media Player Classic [version 6.4.9.0+ SVN build 2007-03-25]

ffdshow:
• ffdshow [rev. 1076]
• ffdshow VFW interface
• extra plugins

DirectShow video filters:
• XviD [version 1.1.2]
• DivX [version 6.5.1.0]
• On2 VP6 [version 6.4.2.0]
• On2 VP7 [version 7.0.10.0]
• MPEG-1 / MPEG-2 (Cyberlink) [version 6.0.0.3402]
• MPEG-1 / MPEG-2 (DScaler5) [version 0.0.8.0]
• MPEG-1 / MPEG-2 (Gabest) [version 1.0.0.3]
• MPEG-1 / MPEG-2 (MainConcept) [version 1.0.0.78]
• MPEG-1 / MPEG-2 (Ligos) [version 4.0.0.77]