An open content film (or open source film) is a movie or film produced using open source software and open source methodology. It is usually released with samples or source material (screenplay, script, footage, etc.) that are released under a license which permits other parties to create other derivative works or fan fiction. Its production is either an open call system in which a changing cast and crew collaborate in movie production, a system in which the end result is made available for re-use by others or in which exclusively open source products are used in production.