Leonardo DiCaprio on challenges of filming "The Revenant"

Leonardo DiCaprio is generating Oscar buzz for his role in the new movie, "The Revenant," inspired by the true story of mythical explorer Hugh Glass.

The film is directed by Oscar winner Alejandro G. Inarritu, based on Michael Punke's novel which chronicles one man's journey of survival in the early 19th century American wilderness.

DiCaprio plays a frontiersman who crawls 200 miles to get revenge after being brutally mauled by a bear. The actor called it as one of the "toughest films I've ever been a part of."

"There for nine months in subzero temperatures in Calgary, real locations, far-off locations, we looked at this as a grand sort of artistic experiment," DiCaprio told "CBS This Morning" co-host Charlie Rose during an interview for The Charlie Rose show. "We rehearsed meticulously all day long with (filmmakers) Chivo and Alejandro to pull of some very crucial and hard-to-do shots. And then we'd have an hour-and-a-half of natural light and it became like live theater at the end of the day, this frenetic pace and intensity that we needed to keep up with."

The actor also described it as a "chapter of my life" rather than a "film commitment."

"For all of us it was just about allowing ourselves to put our trust in somebody else's unique process. And that's what this was for us as actors because a lot of this was thought about beforehand in great detail, but we needed to give ourselves over completely to something entirely new," DiCaprio said. "And, you know, it created a great camaraderie between the entire cast and crew and director."