title: Can't get libvlc to play sdp file
body: <p>I have the following sdp file which my program generates:</p>
  
  <pre><code>v=0
  c=IN IP4 192.168.0.20
  t=0 0
  m=audio 1235 RTP/AVP 101
  a=recvonly
  a=rtpmap:101 speex/16000/1
  a=fmtp:101 media=(string)audio, clock-rate=(int)16000, encoding-name=(string)SPEEX, encoding-params=(string)1, payload=(int)101, ssrc=(uint)3395200432, clock-base=(uint)1773032113, seqnum-base=(uint)12387
  a=maxptime:20
  m=video 1234 RTP/AVP 97
  a=recvonly
  a=rtpmap:97 H264/90000
  </code></pre>
  
  <p>I am certain that my server is streaming to those ports with those payload types and caps.
  However, vlc does not pick up either the video or the audio.</p>
  
  <p>Yet if you reverse the video and audio, like so:</p>
  
  <pre><code>v=0
  c=IN IP4 192.168.0.20
  t=0 0
  m=video 1234 RTP/AVP 97
  a=recvonly
  a=rtpmap:97 H264/90000
  m=audio 1235 RTP/AVP 101
  a=recvonly
  a=rtpmap:101 speex/16000/1
  a=fmtp:101 media=(string)audio, clock-rate=(int)16000, encoding-name=(string)SPEEX, encoding-params=(string)1, payload=(int)101, ssrc=(uint)3395200432, clock-base=(uint)1773032113, seqnum-base=(uint)12387
  a=maxptime:20
  </code></pre>
  
  <p>, I pick up the video but still no audio.</p>
  
  <p>Any ideas?</p>