Flash Video Loops

Ok so while looking at the Site Of The Week competition, I stumbled on inovartis and their Flash Video Loops.

First off, I’d like to say that this site is brilliantly made and send a big kudos to it’s makers.

Second, I want to know how these videos are produced. I myself would enjoy doing so but I lack the knowledge of which tools are needed. So, should any of you have suggestions, or even better, should one of the makers be reading, I’d really like to get some info on how these videos were made.