Or you can use youtubefull (Destiny)

by Xenos , Shores of Time, Wednesday, July 22, 2015, 04:25 (3512 days ago) @ petetheduck

I give up.

This shortcode garbage would be just slightly less irritating if there was a guide below the textbox.

I eventually figured it out, begrudgingly.

You can instead use youtubefull if you don't want to have to use the shortcode.