In filmmaking, internal rhythm is created by whatever appears or occurs within the shot of a moving picture. It can change within a scene (film) and from scene to scene. For example, in Citizen Kane, the internal rhythm of the scene in which Kane, Leland, Bernstein, and the movers take over the offices of the Inquirer differs from the rhythm of the scene in which Kane demolishes Susan's bedroom or from the scene in which Kane and Susan spend an evening at home at Xanadu.
The scene in the newspaper office starts out slowly and quietly, but the pace is increased until the rhythm of the action is frantic. The demolition of Susan's bedroom begins slowly, becomes hysterical, but slows again when Charles comes across Susan's snow-scene paper-weight. The rhythm of the scene between Kane and Susan at home is heavy and static, yet tense. it is a duration were in the dance is occurring.