you can get the URL from the
Youtube Phone App
or
any Browser
Get the URL from theYoutube phone app
From the Youtube app, choose your video
Click the Share Icon and choose link, the link is now copied.
Now that the link is copied, just Paste it in the edit box
Get the URL from any Browser
From the Youtube page, choose your video
Copy the url from the Share button
you can also copy the url from the browser Address Bar
Press Ctrl+L to highlight the URL,
and then Ctrl+C (for the Mac, Command+C) to copy it to the clipboard.
Press Ctrl+V (for the Mac, Command+C) to paste the URL into the edit box
Now that the link is copied, just Paste it in the edit box