Just to fill in the lack of code, as to how the images get sorted, it's all in how they are named when created.

I use MVC to capture motion on my v4l2 cameras. They have a sequential named output format like

 ./img-20090226-083619-0.jpg
 ./img-20090226-083619-1.jpg
 ./img-20090226-083620-0.jpg
[download]

So no sorting needed! :-)

I figured that you could record audio, while capturing the stop motion, and add understandable synchronized audio, at a real rate, to the fast motion video. I noticed that MSNBC's parodies of Rush Limbaugh uses this technique.