code: function getMore() {
  		var ajax = new XMLHttpRequest();
  		ajax.addEventListener('load', function () {
  			var originals =
  				this.responseText
  				.split(/\r?\n/)
  				.filter(RegExp.prototype.test.bind(/\.ts$/))
  				.map(resolveURL.bind(null, manifest));
  
  			originals = originals.slice(originals.lastIndexOf(lastOriginal) + 1);
  			lastOriginal = originals[originals.length - 1];
  
  			worker.postMessage(originals.map(function (url, index) {
  				return {url: url, index: sentVideos + index};
  			}));
  
  			sentVideos += originals.length;
  
  			console.log('asked for ' + originals.length + ' more videos');
  		});
  		ajax.open('GET', manifest, true);
  		ajax.send();
  	}
docs: loading more videos from manifest