How to fit youtube poster to width and height?

Question

YouTube

Hello! How to adjust the image (poster) to the width and height of the block. When you change the scale, the picture becomes in the center and dark stripes appear on top, respectively. I tried using media queries to change the height, but this is probably not an option. Tell me please.

Answer 1

https://iandevlin.com/blog/2013/03/html5/html5-vid...
Here is an article on this topic... There is also an example