The document discusses the concept of mise-en-scène in filmmaking, which refers to everything that appears before the camera including characters, setting, costumes, lighting, staging, and more. It explains that mise-en-scène can be used to create effects like realism or exaggeration and works in relation to other film techniques. Key elements of mise-en-scène discussed include setting, costumes, lighting, staging, space, time, special effects, and sound.