The document discusses conventions of movie posters and radio advertisements. It notes that movie posters typically feature the title in largest font with actor names in smaller text. Posters aim to advertise films and come in various sizes. Radio advertisements focus more on atmospheric elements to convey a sense of the production rather than visuals. This allows listeners to imagine what is happening. Horror radio ads are particularly effective as the genre relies on tension and fear created through music and sound effects. An example of a successful horror radio ad discussed is one for "The Amityville Horror" which uses repeating sounds to create an unnerving atmosphere and reiterates the film's tagline.