Audiovisual refers to both materials, techniques and methods of information, communication or teaching combining sound and image. The communication to the public of the recorded performance, which is thus different from the live performance, is done originally by the illumination through the support, the passage of the light by a set of mirrors and/or optical lenses, and the projection of this light beam on a transparent or opaque screen, or the diffusion of the digital signal on a plasma or LED screen. In the original and limiting sense, cinema is the public projection of a film on a screen. Film analysis History of cinema and the arts Communication and Media Literature and Cinema cinematographic language and criticism Languages Sociology of the show Mediation in film clubs and festivals