There’s the business of making movies and then there’s the business of marketing movies. Things seem to have gone well on both fronts for "A Complete Unknown," as Timothée Chalamet’s Bob Dylan movie is performing well at the box office and earning rave reviews from critics and fans.

At first glance, you might not have guessed behind the sunglasses, bushy hair and general shaggy appearance that it was Timothée Chalamet playing the iconic, eccentric Bob Dylan. Yet, for the nearly two and a half hours that is “A Complete Unknown,

Film director James Mangold also tells  Esther McCarthy why he focused on that crucial early period in Dylan's career