Is there still an APP called VisualHub? It worked very well, even with me having a iMac. I heard that it went out of business, the parent company. The best converter I have ever used.
In case you're interested check out following video converters for Mac as well
- Video Converter [Mac]
Try Evom from the little app factory. http://thelittleappfactory.com/evom/
a quick search revealed that VisualHub was discontinued in October 2008.
Techspansion itself posted the link to the source code for VisualHub and its other programs: http://www.techspansion.com/