fade

A common type of transition in both video and audio.

For video, a fade-out begins with a shot at full intensity and reduces until it’s gone. A fade-in begins with a shot at no intensity and increases to full intensity. These are the common “fade to black” and “fade up (from black)” transitions.

Audio fade-ins begin with silence and increase to full volume, and fade-outs begin at full volume and decrease to silence.