code: function VideoLoader(loadItem, preferXHR) {
  		this.AbstractMediaLoader_constructor(loadItem, preferXHR, createjs.AbstractLoader.VIDEO);
  
  		if (createjs.RequestUtils.isVideoTag(loadItem) || createjs.RequestUtils.isVideoTag(loadItem.src)) {
  			this.setTag(createjs.RequestUtils.isVideoTag(loadItem)?loadItem:loadItem.src);
  
  			// We can't use XHR for a tag that's passed in.
  			this._preferXHR = false;
  		} else {
  			this.setTag(this._createTag());
  		}
  	}
docs: constructor 
  A loader for video files.
  @class VideoLoader
  @param {LoadItem|Object} loadItem
  @param {Boolean} preferXHR
  @extends AbstractMediaLoader
  @constructor