date un'occhiata a questo video:
http://www.youtube.com/watch?v=OT-cTUoo52M
È la scena della presentazione delle tre prove fatto con questo sistema, Source Filmmaker: http://www.sourcefilmmaker.com
Nelle FAQ si legge:
Fatemi capire, Valve, la stessa azienda di Steam, fa giochi e video usando questo sistema, che sfrutta la stessa struttura dell'engine Source, quindi si possono ottenere video dai giochi e giochi dai video!Q. What is the Source Filmmaker?
The Source Filmmaker is the movie-making tool built and used by Valve to make movies inside the Source game engine. It is how we have been making all of our animated short movies. Because the Source Filmmaker uses the same assets as a Source-engine game, what goes into the game can be used in the movie, and vice versa. By using the hardware rendering of a modern PC gaming machine, the SFM allows storytellers to work in a “what you see is what you get” environment so that they can iterate in the context of what it will feel like for the final audience.
Cosa ne pensate? Come vi sembra il risultato?
un bel mix Team Fortress/Monkey Island 
