This document outlines common conventions used in film trailers. It discusses including exciting scenes to engage audiences, a brief narrative introduction, genre-appropriate music, character introductions, cliffhangers to encourage viewership, release dates, production company branding, film titles, known actors/directors, awards, genre signifiers, intertitles, narrative exposition, and legal disclaimers. The goal of these conventions is to effectively promote films and attract target audiences without revealing too much of the plot.