I could use some education here. The link I gave is (I think):

https://www.youtube.com/watch?v=7S_4sv4Tzxg

Isn't that exactly what you put? Or is my browser transforming this thing without my knowledge at various steps?

So how can I see the "real" de-refed version or how do you make it? I know I sometimes see URLs with lots of stuff on the end that seems unimportant and I remove that and they still work, but I don't see that here.

Maybe there's something on the web that describes all this, but I couldn't find it with the search terms I thought of.