A film distributor secures the rights to distribute a film in a particular territory. They are responsible for marketing the film to identify the largest possible audience, which involves spending money on activities like advertising, trailers, and posters. The marketing budget for large blockbuster films can be over half the film's production costs. Independent filmmakers rely on film agents to help sell their films to individual distributors and assist with marketing materials. Distributors strategically plan marketing campaigns far in advance to target specific audiences.