Filmmaking involves a number of discrete stages including an initial story, idea, or commission, through scriptwriting, casting, shooting, editing, and screening the finished product before an audience that may result in a film release and exhibition. Filmmaking is both an art and an industry. Films were originally recorded onto plastic film which was shown through a movie projector onto a large screen (in other words, an analog recording process). The adoption of CGI-based special effects led to the use of digital intermediates. Most contemporary films are now fully digital through the entire process of production, distribution, and exhibition from start to finish.