A feature-length documentary on the life of out British actor Ian McKellen is in the works.

According to Variety, the film, titled McKellen: Playing the Part, will feature “rare archive material of early work from stage and screen, never-before-seen photography from McKellen's private collection, and cinematically reconstructed scenes from his life.”

McKellen, 77, is best known for playing Gandalf in the The Lord of the Rings and The Hobbit trilogies and Magneto in the X-Men films. His performances in Gods and Monsters and The Lord of the Rings: The Fellowship of the Ring earned him Oscar nominations. He came out in 1988.

To produce the film, director Joe Stephenson said that he secured an exclusive interview with McKellen that lasted 14 hours.

“To a whole generation of cinema-goers Ian is known as Gandalf and Magneto, but here is an opportunity to show them his incredible, and inspiring trajectory from his modest childhood in the north of England to Tony winning star of the stage, from one of the first actors to speak openly about his sexuality to becoming an internationally recognized two-time Oscar nominee,” Stephenson told Variety.

“While Ian has been interviewed many times, and lives a life very much in the public eye, we wanted to talk candidly to him about his journey and philosophy in a way that may not have been done. It’s an honor to tell the story of someone still so relevant and active in our industry, and my hope is that an audience might walk out of the cinema as inspired by his journey as I am, feel like they better understand how he has got to where he is today, and celebrate not just his awesome achievements, but the man himself,” he added.