Avicodec is much better than Gspot. And faster.
http://avicodec.duby.info/
"AVIcodec v1.1 - Free multimeda files analyser :
Gives detailled information, especially the codecs needed to play the
file, and where to download those codecs if they are missing on your
system.
* Recognized formats :
o Natively : AVI, ASF & WMV, Real (.rm, .rmvb), Ogg (.ogg,
..ogm), Mpeg-(S)VCD-DVD (.mpg, .vob)
o Others : all those handled by DirectShow (.mp3, ...).
* Features : install program, tooltips, drag & drop support,
accessible from contextual menu in Explorer, export of all the
information, recusive directory analysis, ...
* Langages : Chinese, Deutsch, English, Español, Francais, Hungarian,
Italiano, Nederlands, polski, Portugûes, Romanian, Russian.
If your language is not there, please help me to add a translation
in your language.
* Code : Borland C++ Builder 6. Source code available on demand.
* New : Next release (1.2) will use MediaInfo DLL to grab file
information. MediaInfo adds Mastroska support and others interesting
things !"