The document discusses the history and conventions of horror films. It provides examples of effective techniques used in short horror films and trailers. Horror films have evolved from using monsters and vampires to focus on more realistic threats like ghosts and murderers. Effective elements discussed include ominous music, simple yet scary paranormal events, dark and confined settings that build tension, quick edits, and unsettling sounds. Trailers use techniques like changes in atmosphere, mysterious sounds, and jump cuts to generate suspense and lead to a climactic moment. Common horror conventions explored are isolated settings, camera angles that show vulnerability or threats, diegetic and non-diegetic sounds, fast pacing with edits, low key lighting, and symbolic colors and props