Most likely CGI using Blender, Lightwave, or Maya based on camera movement (motion tracking) as seen on many other well known CGI videos.
Also an event of such mysterious magnitude would surely be filmed longer, so...Where is the rest of the footage? I guess the guy lost interest in the
thing and walked away. Either that or his computer memory and render time would have been so maxed out as to require 25 liquid cooled graphics
cards.
edit on 17-1-2012 by snowen20 because: (no reason given)