I downloaded FantaMorph with the expectation that I would be doing the same thing, but the program is so feature-complete that it has impressed me into making the purchase

As far as the "feature request" goes for this post, I would highly recommend linking to a CODECs package such as the ACE Mega CodecS Pack. http://www.free-codecs.com/download/ACE ... S_Pack.htm
Using the ACE Dashboard you can dynamically load and unload hundreds of different codecs on your machine, giving you many more options when exporting to AVI. For example, when I first installed the program, the only options for export I had were DivX 5.x.x (which was malfunctioning) and Uncompressed Frames, which gave me 200MB movies.
I opened the Dashboard and activated the Microsoft Mpeg4 Codecs (and a few others), re-started FantaMorph and now I had many more export options. The Mpeg4 option I selected reduced the 200MB output to 5MB with hardly any loss of quality.
Linking to the Mega Pack would help many people who are having trouble exporting movies using their existing CODECs, IMHO

Thanks for this great program!