Alejandro Inarritu on The Revenant

With Francine StockThe Oscar winning director of Birdman, Alejandro Inarritu discusses his western The Revenant, which tested his actors, including Leonardo Di Caprio, to their limits and was reportedly described as a living hell by members of the crew.Director Lenny Abrahamson describes just how he made Room, a movie mainly set in a 11 x 11 foot cell.Critic Catherine Bray assesses the runners and riders in this year's Oscars race.