Writer-director J.C. Chandor follows his well-received, 2011 drama “Margin Call” with an unusual cinematic feat: a one-actor picture with virtually no dialogue. The movie, “All Is Lost,” centers on an unnamed protagonist who becomes stranded at sea, and Chandor’s only actor is cinema icon Robert Redford. In the film, Redford’s character awakens to find his small sailboat lodged on a metal cargo container that was drifting at sea. The collision tore a hole in the side of his craft, which is rapidly taking water.