Film producers fill a variety of roles depending upon the type of producer. Either employed by a production company or independent, producers plan and coordinate various aspects of film production, such as selecting script, coordinating writing, directing and editing, and arranging financing. The average Hollywood film made in 2013 had just over 10 producer credits (3.2 producers, 4.4 executive producers, 1.2 co-producers, 0.8 associate producers and 0.5 other types of producer). During the "discovery stage" the producer has to find and acknowledge promising material. Then, unless the film is supposed to be based on an original script, the producer has to find an appropriate screenwriter.For various reasons, producers cannot always personally supervise all of the production. As such, the main producer will appoint executive producers, line producers or unit production managers who represent the main producer's interests. Among other things, the producer has the last word on whether sounds or music have to be changed or scenes have to be cut and they are in charge of selling the film or arranging distribution rights. The producer's role can vary significantly from project to project and based on the circumstances and funding.Clarification of termWhereas historically in television, the primary role of the producer was to oversee all aspects of video production, in film and often in television today, this role is filled by the Line Producer. The line producer may manage a film's budget and maintain a schedule. The Executive Producer oversees the filmmaking with regard to film financing. They liaise with the line producer and report to production companies and distributors. Whether the person credited as "producer" or a person credited as "executive producer" has more input on a production is not always clear, and is subject to change as the film is substantiated. Since filmmaking is a dynamic process, responsibilities can grow or shift in the process and credits for producers can get adjusted retroactively. For example, somebody hired as a "line producer" might later be credited as an "executive producer".