“put into the scene”
This aspect of film form includes everything that appears before the camera within a shot. It can include planned elements like various props, lighting, costuming, make-up, staged body motions and facial expressions, the actors themselves, and computer- generated imagery as well as unplanned elements like passing traffic and insects flying through the frame.
Remember, even obviously static elements in the shot (like architecture and landscape) are still part of the shot’s mise-en-scène because the director made the choice to include such elements in the frame.