Lovely, thank you Steff.
It's interesting to me that your 'shorts' videos aren't in their own section on your channel in that video, but that does explain to me why the link you get works to post the video here.
When I look at your channel your music videos are under the 'shorts' tab, and when I take a share ink from one, the word 'short' appears in the link and then it does not work when posted here.
Thanks again for the video, much appreciated. ; )