samelie

//the index range will be eg: 0-917
// you can find the index range of a particular dash video insode the ytplayer.config
// https://github.com/fent/node-ytdl-core
function sidxFromInitRange(url, indexRange) {
    return new Q(function(resolve, reject) {
      var XMLHttpRequest = require('xhr2');
      var xhr = new XMLHttpRequest();
      xhr.open('GET', url);
      xhr.setRequestHeader("Range", "bytes=" + indexRange);
      xhr.send();