Just the embed code.
It worked once, but didn't bring up a thumbnail.
So, I tried again, but when it didn't work I edited the post and then all hell broke loose.
So, let's see if a simple code, entered into the editor, using edge, will bring up the video and a thumbnail,....
<iframe src="https://player.vimeo.com/video/191197865" width="640" height="360" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
NO PEACEFUL TRANSITION #DisruptJ20 from subMedia.tv on Vimeo.
Ok there it is, here is to nothing,....