Hi Peter,

Welcome to Permies.

I looked at the video element you tried to post, but it is not valid YouTube URL. (https://www.youtube-nocookie.com/embed/4ZitX5JZbmo) I tried searching for it using the id string, but still couldn't find it. So, I searched by your title.

Is this the video you were trying to post?

https://youtu.be/BYb2jJZF0-g

When posting, you should click the YouTube Tab above the posting box and insert the video URL in this format: https://www.youtube-nocookie.com/embed/BYb2jJZF0-g

https://www.youtube.com/watch?v=4ZitX5JZbmo

Thanks Jim
see link above on youtube it works, hugs from Nepal

Its the same course that is shown though, your long version focusses on the construction context only