Go to David Sylvian’s Vimeo page instead and watch the video there. He also wrote beautifully about the sessions and according to his text the video was recorded in Berlin in 1983. The musicians are, in order of appearance, Ronny Drayton, David Sylvian, Ryuichi Sakamoto, Holger Czukay, Jon Hassell, and Steve Nye.
I found a video that was recorded at Hansa Studio Berlin, with Holger Czukay, Jon Hassell, and Ryuichi Sakamoto. The album Brilliant Trees (link to Apple Music) was released in 1984, so these sessions must have taken place circa 1982-1983, I imagine. Three of the musicians in this video are no longer with us: Holger Czukay, Jon Hassell, and Ryuichi Sakamoto.