fade

Fade is a transitional device consisting of a gradual change in the intensity of an image or sound, such as from a normally-lit scene to darkness (fade out, fade-to-black) or vice versa, from complete black to full exposure (fade in), or from silence to sound or vice versa. "Fade in" is often at the beginning of a sequence, and a fade out" at the end of a sequenc. A "cross-fade" means fading out from one scene and into another (often with a slight dissolve or interruption).