You can use Movie Streams as an approach to output a movie file of your interactive manual painting in Studio Artist.
Movie streams have different write frame write options accessible via menu flags. The one you probably want to use is called Gated AutoWrite.
Here's a tip on working with movie streams. It discusses the various frame write flags and how to work with movie (or image) streams.
http://www.synthetik.com/tips/2008/08/movie-and-image-streams/
Here's a tutorial video that discusses working with movie streams and Dual Mode Paint presets.
https://vimeo.com/24981329
t's using a different write flag (enable on op end), because it's working with dual mode paint presets, so it fires out a frame whenever the dual op part of it runs.
If you want to do manual painting with ordinary Paint Synthesizer Classic presets, then you will probably want to use one of the 2 AutoWrite frame write flag options. The autowrite stream flags dump out frames based on a timer setting you can set in the movie preferences tab of the main preferences dialog. The Gated AutoWrite flag option doesn't output anything while you are not using the program, while non gated AutoWrite is always outputting frames, even if you aren't drawing or doing some other interactive or loop action effects.
If you have any screen capture programs that output movie files (Snapz Pro or SnapScan), those are other options you can use.