Finally I get some time to post on CG-Nation 
The video is a test I made using a program call Voodoo and Blender. I tracked the camera motion with Voodoo, and added the particles in Blender.
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pretty cool. is Voodoo free?
Artist
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Yes, Voodoo is free, you can finde it on http://www.digilab.uni-hannover.de/download.html