GSpot is a free utility which identifies the codec required to play an AVI file and supplies other information as well.

• Establishes what codecs (audio and video) are required to play an media file.
• Determines whether these codecs are installed on your system.
• Isolates problems associated with these codecs.
• Isolates problems associated with media files.
• Shows framerate, duration, aspect ratio, bitrates, "hidden" info, and more.
• Drag and Drop and "Send To" support, multi-file (batch) processing support.
• Copy/Paste or text export GSpot information - format is user configurable.
• Advanced UI including "dual-mode" and hyperlinked "persistent" tool tips.
• Supports VFW, ACM, DirectShow and DMO codec types (audio and video)