Edit
Actually, our Justin.tv page demonstrates what processing of high-motion videos looks like (source vids are 5mins long):
http://www.highlightcam.com/justin.tv/
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The About page video is 60 minutes long, with motion for maybe 30 minutes. The highlight video is 50 seconds of the most interesting motion.
http://highlightcam.com/about/
The threshold adjusts automatically, so you'd get just under a minute for both one rabbit twitching its ears, or 30 rabbits getting a bundle of carrots.
Yeah, we should really find a good non-confidential party demo :> Maybe we'll film a party this weekend?