The Matrix hit theaters in 1999 built on a technical trick nobody in mainstream film had pulled off before: bullet time, the effect that lets the camera swing around a frozen moment of action. This promotional making-of documentary, released alongside the movie, walks through how the Wachowski siblings and their effects teams built that shot and the rest of the film's visual language, mixing early CGI with wire work, stunt choreography, and practical sets. Behind-the-scenes footage shows costume designers, set decorators, and visual effects crews solving the problem of making a simulated world look convincingly solid, and stunt performers rehearsing the fight sequences frame by frame before they were filmed. The Wachowskis discuss the planning behind the movie's look, and the documentary treats the bullet time rig, essentially a ring of still cameras fired in sequence, as its centerpiece technical achievement. It is a studio-produced promotional piece rather than an independent account, but it captures effects work that changed how action was shot afterward.