A player with background-fill around the edges for a vertical video?

Question

JavaScript

Good day everyone! I need to upload videos to Vimeo taken from my phone (portrait screen capture). And it needs to be added to the site. If there are no problems with viewing on the phone, then when viewing on the computer there will be stripes on the sides.
The question is, is there any player that would fill in these fields by itself, so that on the phone in vertical mode the video fits into the screen, and on the computer the fill with a blurry video is drawn?
As in this picture https://resize.yandex.net/imgs_touch?key=b04814d3f...