JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://f.vimeocdn.com/js/froogaloop2.min.js"></script>
<iframe src="http://player.vimeo.com/video/24157555?api=1;title=0&amp;byline=0&amp;portrait=0&amp;color=d01e2f&amp;autoplay=1" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>

JavaScript

var iframe = document.getElementsByTagName('iframe')[0];
var player = $f( iframe );

 player.addEvent('ready', function() {
     player.api('setVolume', 20); 
 });