Posting links to videos:
Just post the address itself (http...) without the "s" in the http part, then the video image will be displayed, and the link will work throght the image on display. It is a workaround with this vintage 20+ years old forum solution.

It is best practice to post both the "http" link, and also the https link, on two separate lines, first the https, then the real https, as youtube and secutity around displaying secure and insecure links may vary around the tech world.

Bjornulf