Here’s a screengrab of a video with a link to it on YouTube:

Patriot Act with Hasan Minhaj - We're doing elections wrong

Many publishers will not find this to be adequate, because users have to click away from your web page in order to view the video. However, if this is sufficiently functional to give people a preview of what they will see if they click on the link, then maybe we can use progressive enhancement to embed the video in the webpage using javascript, for people who have javascript enabled.

A Message From the Future With Alexandria Ocasio-Cortez. The Intercept presents a vision of a future with a successful Green New Deal in this film. The above image is a thumbnail in a <picture> tag.