ที่นี่เลยครับ
http://www.freecodec.com/download/K_Lite_Codec_Pack.htm 
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 verything 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 ssential things. It contains verything you need to be able to play the most popular and widespread formats. It is small nough to fit on a single floppy. Also great for including on your movie CDs.
• K-Lite Codec Pack Standard contains verything you need to play all the commonly used formats. This package should be nough for the average user.
• K-Lite Codec Pack Full contains ven more codecs. It also has ncoding support for the various formats. This package is for power users and people who do their own ncodings.
Features of K-Lite Codec Pack 3.10 FULL version :
• Player :
- Media Player Classic (latest build from Celtic_Druid)
• FFDShow :
- FFDShow [rev. 1193]
- xtra plugins
- FFDShow VFW interface
• DirectShow video filters :
- XviD [version 1.1.2]
- DivX [version 6.6.1.1]
- 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 1.2.0-dev build 2006-11-08]
- DivX Pro [version 6.6.1.1]
- x264 [rev. 655]
- 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]
• DirectShow audio filters :
- MP3 (Fraunhofer) [version 1.9.0.311]
- AC3/DTS/LPCM/MP1/MP2 (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
