Go-to-meeting, the online collaboration and screen casting tool produces video using its own special codec, the g2m3. It makes for really small files, but is not a standard codec installed in any kind of video editing package.
All is not lost. Go-to-meeting provides this codec on their site for
windows media player. Copying the codec files into your favorite video
editor’s codecs folder will enable it to read these files. For this
example, I’ll be using the free version of the ‘any video converter’.
Install both the gotomeeting
codec from their site and the ‘any video converter‘.
The go-to-meeting codec installer will place the codec dll files
C:\Program Files\Citrix\GoToMeeting\366 oder
Copy the DLL files into the codecs folder of the ‘any video
C:\Program Files\AnvSoft\Any Video Converter\codecs
Now avc will be able read and work with these files. Source: http://www.fistagon.us