Do not show video on webpage when screen is recorded/shared

Is there a way to prohibit screen sharing of videos on web pages?

For example, when you try recording or screen sharing (e.g. through Skype) a Netflix video, it only shows a black screen and there's also no audio.

My question is, how they implemented that? I could only think of JavaScript, but not how to do it. I've also searched the web many times, but couldn't find anything interesting. (Maybe I used the wrong search terms...)