// ==UserScript==
// @name webm redirect
// @namespace webm-redirect
// @description Redirect 4chan webms to loopvid
// @include https://i.4cdn.org/*
// @include http://i.4cdn.org/*
// ==/UserScript==

var url = document.location.toString();
if(url.match(/\.webm$/)){
  window.location.replace("https://loopvid.appspot.com/?url=#" + url);
}