code: function videopress(str) {
  	var idRegex;
  	if (str.indexOf('embed') > -1) {
  		idRegex = /embed\/(\w{8})/;
  		return str.match(idRegex)[1];
  	}
  
  	idRegex = /\/v\/(\w{8})/;
  
  	var match = str.match(idRegex);
  
  	if (match && match.length > 0) {
  		return str.match(idRegex)[1];
  	}
  	return undefined;
  }
docs: Get the VideoPress id.
  @param {string} str - the url from which you want to extract the id
  @returns {string|undefined}