Solutions proposed here either didn't work for me or where to large, so I was looking for something else and found the solution proposed by @dighan on bountysource.com/issues/
So here is the code that solved my problem:
var media = document.getElementById("YourVideo");
const playPromise = media.play();
if (playPromise !== null){
playPromise.catch(() => { media.play(); })
}
It still throws an error into console, but at least the video is playing :)