/**
* Returns the files duration as a Timecode object if available otherwise returns false.
*
* @access public
* @author Oliver Lillie
* @param boolean $read_from_cache
* @return mixed Returns a Timecode object if the duration is found, otherwise returns null.
*/
public function readDuration($read_from_cache = true)
{
return parent::getFileDuration($this->_media_file_path, $read_from_cache);
}
