J.S Fade out

Fade-out
Fade outs usually happen most when a film is just ending as it says to the viewer that the film is over when it fades to black and then the ending credits come on. However fade outs are also used in films sometimes when they're started a new scene in the film for example when they want to let the audience know that this is a different part of a film, maybe the night time.


Fade-in
Fade in is where you'll see an image come on screen from black. This can be used to represent a new day in the film or a new scene. This makes things clear to the audience and clarifies everything instead of the audience having to figure it out for themselves. A fade in will also be used at the start of a film after showing the opening of the film and the credits if any at the start.