two different youtubes with same address

I ran into some confusion and wondered if someone could help me. I wanted to post a short version of a youtube interview I found after finding the long version and when I copied the youtube http addresses of the long and short versions, the addresses were the same. I will try to post screen shots of them.

Could someone remind me how I can uncover the address to see the IP address that underlies them?

Would be grately appreciated!