I Am Heath Ledger will showcase never-before seen home footage of the actor, providing a rare look into his personal life and his passion for film.
"There were always cameras around, a video camera, a polaroid camera or the film camera. That's the only way I think of him," model Christina Cauchi said in the trailer.
The documentary is the latest instalment in director Derik Murray's I Am series, which explores the lives of other iconic figures in film, music and the media.
Murray's other subjects have included Bruce Lee, Evel Knievel and Steve McQueen.