Usage: rtsp-client.py [options] url

In running, you can control play by input "forward","backward","begin","live","pause"
or "play" with "range" and "scale" parameter, such as "play range:npt=beginning- scale:2"
You can input "exit","teardown" or ctrl+c to quit


Options:
  -h, --help            show this help message and exit
  -t TRANSPORT, --transport=TRANSPORT
                        Set transport type when SETUP: tcp, udp, tcp_over_rtp,
                        udp_over_rtp[default]
  -d DEST_IP, --dest_ip=DEST_IP
                        Set dest ip of udp data transmission, default use same
                        ip with rtsp
  -p CLIENT_PORT, --client_port=CLIENT_PORT
                        Set client port range of udp, default is "10014-10015"
  -n NAT, --nat=NAT     Add "x-NAT" when DESCRIBE, arg format
                        "192.168.1.100:20008"
  -r, --arq             Add "x-zmssRtxSdp:yes" when DESCRIBE
  -f, --fec             Add "x-zmssFecCDN:yes" when DESCRIBE