In a new seven-minute behind-the-scenes video shared today (via Adweek), director Danilo Parra explores how Jonze shot the video, how the choreography was created, and how the team got the apartment to expand and elongate. On that last point, the production designers on the commercial explain that the team used hydraulics to practically move the sets around as FKA Twigs danced in them -- down to the magazines and tables that she expands in the dream sequence -- all with "very little CGI."
In terms of CGI, VFX supervisor Janelle Croshaw points out that the biggest effect for the ad occurs when FKA Twigs dances with herself in a mirror. At one point in the video it's also revealed that the artist auditioned for Jonze's commercial using FaceTime. To check out the full short documentary on the making of "Welcome Home," visit Adweek right here.
Welcome Home was Apple's first major long-form ad for the HomePod, launching after a series of much shorter, 15-second HomePod videos.