You may find some of the material below useful. Please help yourself. The files are provided as is, however. No support or warranty.
I have also included a script that converts the file and mails it to a given email address, useful for viewing on the ipod touch.
There are a still a few options left in this script worth knowing about, notably one to adjust the frame rate for non-progressive scan movies, and one to leave the given brightness and contrast of the DVD as is. (A movie on the iphone looks better with the brightness and contrast adjusted.)
The world was implemented in PLT Scheme which is now called Racket Scheme, and so references in the documentation to "mred" and "mzscheme" should be replaced by "racket". Although the server is written in Scheme (which needs to be installed for it to run), programs to control the behaviour of the squirrels can be written in any language (like Python or Prolog) that supports TCP communication.