Audio and video codec identifiers and managers
Radlight Filter Manager is designed to manage DirectShow filters and Codecs on Windows systems.
Carrying a very suggestive name, Sherlock - The Codec Detective! identifies codec-related problems of your system.
VCSwap allows you to switch between various codecs while editing your videos. This tool is dedicated to advanced users, who need to be familiar with video editing.
VideoInspector offers extensive and accurate information about your video files. The formats supported by this application are AVI, MOV, MPEG and MKV.
It is a small diagnosis tool which determines if you have an MPEG-2 video decoder (also known as a DVD decoder) installed on your computer.
YAAI - Yet Another Avi Info is a useful and compact application which offers you extensive information about your AVI files.