I used this convertor on a single gvi file and it worked as advertised. My goal was to get the file from .gvi format to .avi and then to further convert it to .wmv file which I was able to do. THANKS for the translation!
Gvi2Avi 1.2.0 on 18 February 2008, reviewed by: Jim Henderson
I used this program to convert three files, two of the three would not work at all, the Video Player came back with an error message and the third let the audio through, but the video was gone. I am not sure what the solution is, but Microsoft has snookered Google on the gvi file format for the time being.