Editing and compositing is a very important part of the production process of film and television works. It involves editing and editing shooting materials, as well as compositing and processing special effects and sound effects. Editing refers to the screening, organization and editing of filmed video materials to meet the requirements of the film's plot and style. The editor needs to screen and organize the shooting materials according to the requirements of the script and the director, and edit the scenes and pictures that conform to the rhythm and emotional expression of the film. Synthesis refers to the synthesis of special effects, sound effects and images to meet the requirements of film artistic effects and audio-visual effects. Compositing requires the precise fusion and cooperation of special effects and sound effects with images to present the visual and auditory effects required by the film.