The document discusses editing techniques used in movie trailers for different genres. It notes that supernatural horror trailers often use over-the-shoulder shots and establishing shots to set the scene. The pace is usually slow at first to introduce characters and settings, then increases toward the middle to build tension. While MAMA trailers start slow and get faster, Evil Dead trailers have quick pacing inserted. Music and effects are also tailored to genres, with supernatural horror using dark, dramatic music and effects like thunder. Editing in trailers aims to intrigue viewers without revealing full plots, using techniques like increasing incidental music during suspenseful scenes but not showing resolutions.