def __init__(self, rtsp_server_uri = _default_source, verbose = _default_verbose):
        """ 
            rtsp_server_uri: the path to an RTSP server. should start with "rtsp://"
            verbose: print log or not
            drop_frame_limit: how many dropped frames to endure before dropping a connection
            retry_connection: whether to retry opening the RTSP connection (after a fixed delay of 15s)
        """
        self.verbose = verbose
        self.rtsp_server_uri = rtsp_server_uri
        self.open(rtsp_server_uri)
def __init__ ( self , rtsp_server_uri = _default_source , verbose = _default_verbose ) : self . verbose = verbose self . rtsp_server_uri = rtsp_server_uri self . open ( rtsp_server_uri )
rtsp_server_uri: the path to an RTSP server. should start with "rtsp://"
            verbose: print log or not
            drop_frame_limit: how many dropped frames to endure before dropping a connection
            retry_connection: whether to retry opening the RTSP connection (after a fixed delay of 15s)