title: ffplay, rtsp and tcp transport protocol
body: <p>I have a problem on connect to a rtsp camera using <code>ffplay</code>.
  The camera is under a router that permits only the TCP protocol.
  I can watch the camera using <code>ffplay</code> only if I am in the same network of the camera.
  So, when I am out, using this command line</p>
  <pre><code>ffplay rtsp://address:554/onvif1
  </code></pre>
  <p>or this</p>
  <pre><code>ffplay -rtsp_transport tcp rtsp://address:554/onvif1
  </code></pre>
  <p>I cannot watch the camera.
  This is the output of ffplay (the latest).</p>
  <pre><code>[rtsp @ 059ee680] Nonmatching transport in server reply  0B f=0/0
  rtsp://address:554:/onvif1: Invalid data found when processing input
  </code></pre>
  <p>Trying with VLC and I can watch the camera without any problem, both when I am in the same network or when I am out. The VLC output says that VLC uses TCP.
  Has someone got a suggestion?</p>