How hard was it to make “The Revenant?” This 45 minute documentary gives you an idea

There is a lot of buzz surrounding The Revenant these days.  It's up for 12 Oscars and the stories of how difficult the shooting of the film was are becoming legendary.  In what surely is part of their strategy to convince the Academy to give them the award, 20th Century Fox has released a 45-minute documentary about [...]