I can do all that stuff using ImageMagick from teh sukcy command line. If I were to have to run a squeak VM just to do video / image processing, I'd refrain.

Anything that they were showing can be done in Photoshop, yes even scriptable. But why script with Photoshop when ImageMagick is about a trillion time faster for doing the simple to very complex things Photoshop does. Not to mention re-inventing the wheel for image and video processing in squeak. But each has its points.

It is just a matter of using what you have.