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.

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.

There are three versions of the K-Lite Codec Pack: Basic, Standard and Full.
• K-Lite Codec Pack Basic contains only the most essential things. It contains everything you need to be able to play the most popular and widespread formats. It is small enough to fit on a single floppy. Also great for including on your movie CDs.
• K-Lite Codec Pack Standard contains everything you need to play all the commonly used formats. This package should be enough for the average user.
• K-Lite Codec Pack Full contains even more codecs. It also has encoding support for the various formats. This package is for power users and people who do their own encodings.

Features of K-Lite Codec Pack 4.3.1 FULL version :

• Player :
- Media Player Classic [version 6.4.9.1 rev. 85]
- Media Player Classic Home Cinema [version 1.1.891]
• FFDShow :
- ffdshow [revision 2322]
- ffdshow VFW interface
- extra plugins
• DirectShow video filters :
- XviD [version 1.2.0 build 2008-01-10]
- DivX [version 6.8.5]
- On2 VP6 [version 6.4.2.0]
- On2 VP7 [version 7.0.10.0]
- MPEG-2 (Cyberlink) [version 8.1.0.1608]
- MPEG-2 (Gabest) [version 1.0.0.4]
- MPEG-1 (MainConcept) [version 1.0.0.78]
• DirectShow audio decoding filters:
- AC3/DTS/LPCM/MP1/MP2 (AC3Filter) [version 1.51a]
- Vorbis (CoreVorbis) [version 1.1.0.79]
- AAC (MONOGRAM) [version 0.9.5.0]
• DirectShow audio parsers:
- MusePack (MONOGRAM) [version 0.9.1.2 | 0.3.1.2]
- WavPack (CoreWavPack) [version 1.1.1]
- FLAC (madFLAC) [version 1.8]
- Monkey's Audio (DCoder) [version 1.0]
- OptimFROG (RadLight) [version 1.0.0.1]
- DC-Bass Source [version 1.2.0]
- AC3/DTS Source (AC3File) [version 0.5b]
- AMR (MONOGRAM) [version 1.0.1.0]
• DirectShow source filters:
- AVI splitter (Gabest) [version 1.0.0.9]
- AVI splitter (Haali Media Splitter) [version 1.8.122.18]
- MP4 splitter (Haali Media Splitter) [version 1.8.122.18]
- MP4 splitter (Gabest) [version 1.0.0.4]
- Matroska splitter (Haali Media Splitter) [version 1.8.122.18]
- Matroska splitter (Gabest) [version 1.0.3.0]
- Ogg splitter (Haali Media Splitter) [version 1.8.122.18]
- Ogg splitter (Gabest) [version 1.0.0.1]
- MPEG PS/TS splitter (Gabest) [version 1.0.0.4]
- MPEG PS/TS splitter (Haali Media Splitter) [version 1.8.122.18]
- FLV splitter (Gabest) [version 1.0.0.5]
- CDXA Reader (Gabest) [version 1.0.0.2]
• DirectShow subtitle filter:
- DirectVobSub (a.k.a. VSFilter) [version 2.39]
- DirectVobSub (a.k.a. VSFilter) [version 2.33]
• Other filters:
- Haali Video Renderer [version 1.8.122.18]
• VFW video codecs:
- XviD [version 1.2.0 build 2008-01-10]
- DivX [version 6.8.5]
- x264 [revision 1024]
- On2 VP6 [version 6.4.2.0]
- On2 VP7 [version 7.0.10.0]
- Intel Indeo 4 [version 4.51.16.2]
- Intel Indeo 5 [version 5.2562.15.54]
- Intel I.263 [version 2.55.1.16]
- huffyuv [version 2.1.1 CCE Patch 0.2.5]
- YV12 (Helix) [version 1.2]
• ACM audio codecs:
- MP3 (Fraunhofer) [version 3.4.0.0]
- MP3 (LAME) [version 3.98.2]
- AC3ACM [version 1.4]
- Vorbis [version 0.0.3.6]
- DivX ;) Audio [version 4.2.0.0]
• Tools:
- Codec Tweak Tool [version 2.2.9]
- GSpot Codec Information Appliance [version 2.70a]
- MediaInfo Lite [version 0.7.7.8]
- VobSubStrip [version 0.11]
- GraphStudio [0.2.9.0]
- Haali Muxer
- FourCC Changer
- Bitrate Calculator

Changes from K-Lite Codec Pack 4.2.5 FULL to K-Lite Codec Pack 4.3.1 FULL :

- 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

Features of K-Lite Codec Pack 4.3.1 STANDARD version :

• Player :
- Media Player Classic [version 6.4.9.1 rev. 85]
- Media Player Classic Home Cinema [version 1.1.891]
• FFDShow :
- FFDShow [rev. 2322]
• DirectShow video decoding filters :
- MPEG-2 (Cyberlink) [version 8.1.0.1608]
• DirectShow source filters :
- AVI splitter (Gabest) [version 1.0.0.9]
- AVI splitter (Haali Media Splitter) [version 1.8.122.18]
- MP4 splitter (Haali Media Splitter) [version 1.8.122.18]
- MP4 splitter (Gabest) [version 1.0.0.4]
- Matroska splitter (Haali Media Splitter) [version 1.8.122.18]
- Ogg splitter (Haali Media Splitter) [version 1.8.122.18]
- FLV splitter (Gabest) [version 1.0.0.5]
- MPEG PS/TS splitter (Gabest) [version 1.0.0.4]
- MPEG PS/TS splitter (Haali Media Splitter) [version 1.8.122.18]
• DirectShow subtitle filter :
- DirectVobSub (a.k.a. VSFilter) [version 2.39]
• Other filters :
- Haali Video Renderer [version 1.8.122.18]
• Tools :
- Codec Tweak Tool [version 2.2.9]
- MediaInfo Lite [version 0.7.7.8]
- VobSubStrip [version 0.11]

Changes from K-Lite Codec Pack 4.2.5 STANDARD to K-Lite Codec Pack 4.3.1 :

- 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 choose ffdshow as AC3 decoder to be able to use that functionality
- Updated FLV splitter to version 1.0.0.5
- FLV files that contains H.264 video and AAC audio are now fully supported
- Updated MediaInfo Lite to version 0.7.7.8
- Minor changes

Features of K-Lite Codec Pack 4.3.1 BASIC version :

- ffdshow [revision 2322]
• DirectShow source filters:
- AVI splitter (Haali Media Splitter) [version 1.8.122.18]
- MP4 splitter (Haali Media Splitter) [version 1.8.122.18]
- MP4 splitter (Gabest) [version 1.0.0.4]
- Matroska splitter (Haali Media Splitter) [version 1.8.122.18]
- Ogg splitter (Haali Media Splitter) [version 1.8.122.18]
- MPEG PS/TS splitter (Haali Media Splitter) [version 1.8.122.18]
- FLV splitter (Gabest) [version 1.0.0.5]
• DirectShow subtitle filter:
- DirectVobSub (a.k.a. VSFilter) [version 2.39]
• Tools:
- Codec Tweak Tool [version 2.2.9]

Changes from K-Lite Codec Pack 4.2.5 BASIC to K-Lite Codec Pack 4.3.1 :

- Updated ffdshow to revision 2322
- ffdshow is now able to decode E-AC3 and Dolby TrueHD audio. You must choose ffdshow as AC3 decoder to be able to use that functionality
- Updated FLV splitter to version 1.0.0.5
- FLV files that contains H.264 video and AAC audio are now fully supported
- Minor changes

Important Note :

- The K-Lite Codec Pack works only on Windows 2000/XP/2003/Vista.