Windows 7 Codec Pack is a freeware video codec application that's reliable.
Here are some screenshots to illustrate the features and user interface of this application:
Custom deployment on your system. Screenshot of Windows 7 Codec Pack - 513px · 427pxWindows Codec Pack, a collection of Codecs. Screenshot of Windows 7 Codec Pack - 513px · 427pxWindows Codec Pack is a to install package of codecs/filters etc. Screenshot of Windows 7 Codec Pack - 513px · 427px
Shark007 Codecs
x264 Video Codec
DivX Codec
K-Lite Codec Pack Standard
K-Lite Codec Tweak Tool