I would like a simple way to embed a YouTube video (as a little playable window) excatly how it looks in the comments section but NOT in the comments section.
In other words, I would like to be able to view it in its own attachment section above the comments section and below the description.
I did find this how-to on creating a power-up but could not get it to work (I got close).
http://amberream.com/how-to-build-a-trello-power-up-for-youtube/

I'd like something similar to this but I do not need the search YouTube functionality. I just want to paste the YouTube URL from unlisted videos that I create.
Can anyone help with this??