Black Sabbath are going to be the subject of a documentary by filmmakers Scot McFadyen and Sam Dunn.
The duo behind Canadian company Banger Films have previously made rock documentaries about Rush , Iron Maiden and Alice Cooper .
They are about to start work on a full-length Sabbath feature film, although it has not been confirmed whether it will document the band's entire history or pick up the story since Ozzy Osbourne , Tommy Iommi and Geezer Butler 's reunion for 2013 record 13, which saw the trio record and perform together for the first time in 35 years.
Meanwhile, Banger Films will also film a documentary on Seattle grunge icons Soundgarden . Canadian director Reg Harkema is working with McFadyen and Dunn on the film, set to get underway in the summer when the band go out on tour with Nine Inch Nails .
Soundgarden reunited in 2010 and released their sixth record King Animal two years later.