public function getRotation()
    {
        if ($this->rotation === null) {
            $match = array();
            preg_match(self::$REGEX_ROTATION, $this->output, $match);
            $this->rotation = (array_key_exists(1, $match)) ? intval(trim($match[1])) : 0;
        }
        return $this->rotation;
    }
public function getRotation()
    {
        if ($this->rotation === null) {
            $match = array();
            preg_match(self::$REGEX_ROTATION, $this->output, $match);
            $this->rotation = (array_key_exists(1, $match)) ? intval(trim($match[1])) : 0;
        }
        return $this->rotation;
    }
public function getRotation ( ) { if ( $ this -> rotation === null ) { $ match = array ( ) ; preg_match ( self :: $ REGEX_ROTATION , $ this -> output , $ match ) ; $ this -> rotation = ( array_key_exists ( 1 , $ match ) ) ? intval ( trim ( $ match [ 1 ] ) ) : 0 ; } return $ this -> rotation ; }
Return the rotation angle of the movie.

@return int
Return the rotation angle of the movie .