Some more info.
My link is
But indesign is perverting this to
Luckily youtube share feature allows a link that Indesign can digest:
SOLVED. But annoying along the way. Stuffed me up rushing for a deadline in the past this has.
I tested your link and it works fine here when exported to pdf. On your Hyperlinks panel do you see the right URL. Does it work when you click on the green dot? I'm testing on ID CC 2015. I remember some issues with hyperlinks in CS6.
It has nothing to do with InDesign. Google causes this automatically with computers with an unusual traffic. I have this here too on computers without InDesign, caused by some strange behavior of the digital connection here.
Its everything to do with inDesign. It was changing the characters in the URL. But workaround was obtained.