Microsoft Camera Codec Pack is a freeware camera codec application.
Here is a screenshot to illustrate the features and user interface of this application:
Collection of codecs that are especially designed to facilitate the viewing of some special types of digital images on any PC. Screenshot of Microsoft Camera Codec Pack - 1632px · 1020px
DivX Codec
FFmpeg
Shark007 Codecs
K-Lite Codec Pack Standard
K-Lite Codec Tweak Tool