To capture video with the Sensoray, open the GUI (python ./demo.py), simply press "Save," enter a filename, and hit "Stop" when you wish to stop recording. If you want to change the video format, there is a dropdown menu labelled "Format." I recommend MP4 for standard video, and nv12 for RAW video.
I also installed mplayer on rossa, so we can play the videos there.
Even though Mike won't admit it, the video stuff is all in /users/sensoray/ . I opened the demo.py from there, and it also works.