One of the most commonly used phrases in movies and television is 'do a fade-out.' It is the visual and auditory signal that a scene has ended, and the next one is about to begin. However, just like any other phrase, it's important to keep it fresh by using synonyms. So, if you're looking for some alternatives to use instead of 'do a fade-out,' you can try using 'end smoothly,' 'dim to black,' 'shut down, 'gradually fade,' 'fade to black,' or 'dissolve.' These synonyms can help keep your writing and descriptions vivid and memorable.