As the hero rides into the sunset, the screen 'fades to black'. [=the image gradually changes until the screen is completely black]
His voice 'faded' off into a whisper. = His voice 'faded' to a whisper.
We watched the ship gradually 'fade' from view as it sailed away.
(..) We open exterior outer space scenery. Calico comes for your Penny. And then you squish him. And as the tractor beam is pulling Penny and you to aliens' mother ship... ...we fade to black. And we have a great pop song for the end credits. Talk your people. We're ready to move on this. (..)2008 Bolt
(..) Well, not the best, she just doesn't... You know what I'm saying? It's like this smell, a smell, there's attraction thing and after a while itjust kinda fades away. - Yeah, well it supposed to fade away. - Supposed to? - That's marriage, you know... - That so... - Your Mother and I we've been (..)2013 The Wolf of Wall Street
(..) I scarred you for life. See, that's the thing, Shen. Scars heal. No, they don't. Wounds heal. Oh, yeah. What do scars do? They fade, I guess? - I don't care what scars do. - You should, Shen. You gotta let go of that stuff from the past, 'cause it just doesn't matter. The only thing that matters (..)2011 Kung Fu Panda 2