In the performing arts industry such as Theatre, Film, or Television, a casting is a pre-production process for selecting a certain type of actor, dancer, singer, or extra for a particular role or part in a script, screenplay, or teleplay. This process is typically utilized for a motion picture, television program, documentary, music video, play, or television advertisement, etc. This involvement in a dramatic production, advertisement, and or industrial video is intended for an audience, or studio audience. wikipedia