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 1.71 :
Player:
• Media Player Classic [version 6.4.9.0+ SVN build 2007-03-25]
ffdshow:
• ffdshow [rev. 1097]
• 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]
VFW video codecs:
• XviD [version 1.1.2]
• DivX Pro [version 6.5.0.53]
• x264 [rev. 621]
• Windows Media 9 VCM [version 9.0.1.1184]
• On2 VP6 [version 6.4.2.0] [Encoding]
• On2 VP7 [version 7.0.10.0] [Encoding]
• Intel Indeo [version 5.2562.15.54]
• Intel Indeo [version 4.51.16.2]
• Intel Indeo [version 3.24.15.03]
• Intel I.263 [version 2.55.1.16]
• huffyuv [version 2.1.1 CCE Patch 0.2.5]
• I420 (Helix) [version 1.2]
• YV12 (Helix) [version 1.2]
QuickTime Alternative:
• QuickTime codecs [version 7.1.5.120]
• QuickTime plugin for Internet Explorer
• QuickTime plugin for Firefox/Mozilla/Netscape/Opera
• Extra QuickTime plugins
• QuickTime DirectShow parser
• QuickTime DirectShow decoder wrapper
Real Alternative:
• RealMedia codecs [version 6.0.12.1741]
• RealMedia plugin for Internet Explorer
• RealMedia plugin for Firefox/Mozilla/Netscape/Opera
• RealMedia DirectShow splitter [version 1.0.1.1]
DirectShow audio filters:
• MP3 (Fraunhofer) [version 1.9.0.311]
• AC3/DTS/LPCM (AC3Filter) [version 1.30b]
• MP1/MP2 (MainConcept) [version 1.0.0.78]
• Vorbis (CoreVorbis) [version 1.1.0.79]
• AAC (CoreAAC) [version 1.2.0.575]
• MusePack [version 1.0.0.3]
• Monkey's Audio [version 1.00]
• WavPack (CoreWavPack) [version 1.1.0]
• FLAC (illiminable) [version 0.73.1936]
ACM audio codecs:
• MP3 (Fraunhofer) [version 3.4.0.0]
• MP3 (LAME) [version 3.97]
• AC3 (ffcHandler) [version 1.3.1]
• Vorbis [version 0.0.3.6]
• DivX ;) Audio [version 4.2.0.0]
DirectShow source filters:
• AVI splitter (Gabest) [version 1.0.0.7]
• AVI splitter (Haali Media Splitter) [version 1.7.121.0]
• MP4 splitter (Haali Media Splitter) [version 1.7.121.0]
• MP4 splitter (Gabest) [version 1.0.0.3]
• Matroska splitter (Haali Media Splitter) [version 1.7.121.0]
• Matroska splitter (Gabest) [version 1.0.2.9]
• Ogg splitter (Haali Media Splitter) [version 1.7.121.0]
• Ogg splitter (Gabest) [version 1.0.0.0]
• FLV splitter (Gabest) [version 1.0.0.1]
• MPEG TS splitter (Haali Media Splitter) [version 1.7.121.0]
• MPEG PS splitter (Cyberlink) [version 1.0.0.4528]
• MPEG PS splitter (Gabest) [version 1.0.0.3]
• MPEG PS splitter (Haali Media Splitter) [version 1.7.121.0]
• MPEG PS splitter (MainConcept) [version 1.0.1.20]
• MPEG PS splitter (Elecard) [version 1.0.31.51211]
• MPEG PS splitter (Ligos) [version 4.0.0.77]
• MP3 Source (DCoder) [version 1.3]
• AC3/DTS Source (AC3File) [version 0.4b]
• SHOUTcast Source [version 1.0.0.1]
• AAC parser (Orban) [version 1.0.27]
DirectShow subtitle filter:
• DirectVobSub (a.k.a. VSFilter) [version 2.37 + fixes]
Encoding tools:
• LAME CLI and DLL [version 3.97]
• LameDropXPd [version 3.97]
• OggDropXPd [version 1.8.9 aoTuVb5]
Tools:
• GSpot Codec Information Appliance [version 2.70a]
• VobSubStrip [version 0.11]
• GraphEdit [build 041201]
• MMCompView [version 1.10]
• AVI Fixed [version 2.0b1]
• FourCC Changer
• Bitrate Calculator

Changes from 1.70 -> 1.71 | (2007-04-13):
- Updated ffdshow to revison 1097
- Updated x264 VFW to revision 621
- Removed DirectVobSub 2.33. It is available as a separate installer.
- Removed Morgan Multimedia Stream Switcher. It is available as a separate installer. Most modern players and also Haali Media Splitter already have a build in stream switcher.
- Removed Voxware MetaSound decoder. It is available as a separate installer.
- Improved Codec Tweak Tool
- Improved .mov downloader
- This version of the codec pack does not support Windows 98/ME/NT4. Users of these old Operating Systems don't need to worry. There will be future versions of this codec pack that will work on these old versions of Windows. A pack that runs on all versions of Windows will be released every few months or when there are important changes/updates. The previous version of this pack runs perfectly fine on Windows 98/ME/NT4.