Fede Alvarez is the director of this short CG movie called Ataque de Pánico!
Shot in Montevideo (Fede Alvarez has a post production house called Aparato Post in Uruguay), apparently it took only $300 for the live action stuff plus about an year to complete the whole process!

And get this: This video rendered a $30 million contract with Sam Raimi’s Ghost House Pictures.
What can I say? Congrats, you guys deserved it!
You can check more details about the production on CGSociety’s post about Ataque de Pánico! made by Fede Alvarez himself.

Source: Gizmodo