Warner Bros. has started production on “The Lord of the Rings: The Hunt for Gollum” and has released initial set footage showing Andy Serkis returning as Gollum. The short behind-the-scenes clip presents Serkis on set as filming begins. Multiple outlets report that the studio uses the video to mark the start of work on the next installment connected to Peter Jackson’s original “Lord of the Rings” film trilogy. Coverage also describes the project as a prequel set before and during events from “The Fellowship of the Ring,” with the story positioned around the period leading up to the “Company of the Ring” entering the Mines of Moria and encountering Gollum in the original films. One outlet adds that the film is told from Gollum’s point of view. Serkis is reported as both starring in and directing the movie, with additional reported casting that includes Ian McKellen as Gandalf, and other actors joining in roles related to characters seen in the earlier films. Overall, the sources agree that production is underway and that the early video provides the first look at Serkis back in character as filming gets started.