Facebook mobile browser video style

Hello i have seen this alot on facebook. and the website is mostly running wordpress.
i have here attached a similar photo where in if you click a link on facebook then the author was directing it to a video blog. The video is overlayed on top of the header with un-obstructed view.
Please see link for sample on what i mean.

https://www.uavarena.com/wp-content/uploads/2016/12/15723916_10212169236692385_359192503_n.png