JSFiddle - React, Tailwind, and code Playground

HTML

<video id="test" style="height:300px;width:400px" src=null>
</video>

JavaScript

document.getElementById("test").play();
setTimeout(function() {
   document.getElementById("test").src = "https://cdn.spotxcdn.com/media/videos/orig/a/9/a9ffd53e1e0f11e68ead19e233f970be.mp4"
},1000);