title: Gstreamer - opus caps parsing error, anyone know how to fix it?
body: <p>What is wrong in my parsing? Its failing to parse properly the opus caps (but not speex) and causing it not functional anyone know, where i have to add more \ or / or " or ' symbols to make it valid caps?</p>
  
  <pre><code>$ gst-launch-0.10 -v gstrtpbin name=rtpbin latency=100 udpsrc caps="application/x-rtp, media=(string)audio, clock-rate=(int)48000, encoding-name=(string)X-GST-OPUS-DRAFT-SPITTKA-00, caps=(string)\"audio/x-opus\\,\\ multistream\\=\\(boolean\\)false\\,\\ streamheader\\=\\(buffer\\)\\&lt;\\ 4f707573486561640101000080bb0000000000\\,\\ 4f707573546167731e000000456e636f6465642077697468204753747265616d6572204f707573656e63010000001a0000004445534352495054494f4e3d617564696f74657374207761766501\\ \\&gt;\", ssrc=(uint)3090172512, payload=(int)96, clock-base=(uint)4268257583, seqnum-base=(uint)10001" port=5002 ! rtpbin.recv_rtp_sink_1 rtpbin. ! rtpopusdepay ! opusdec ! audioconvert ! audioresample ! alsasink device=2 name=uudpsink0 udpsrc port=5003 ! rtpbin.recv_rtcp_sink_1 rtpbin.send_rtcp_src_1 ! udpsink port=5007 host=%s sync=false async=false
  
  (gst-plugin-scanner:25672): GStreamer-WARNING **: Failed to load plugin '/usr/lib/gstreamer-0.10/libgstsimsyn.so': /usr/lib/gstreamer-0.10/libgstsimsyn.so: undefined symbol: gst_controller_sync_values
  
  (gst-plugin-scanner:25672): GStreamer-WARNING **: Failed to load plugin '/usr/lib/gstreamer-0.10/libgstaudiodelay.so': /usr/lib/gstreamer-0.10/libgstaudiodelay.so: undefined symbol: gst_base_transform_set_gap_aware
  
  (gst-plugin-scanner:25672): GStreamer-WARNING **: Failed to load plugin '/usr/lib/gstreamer-0.10/libgstbml.so': /usr/lib/gstreamer-0.10/libgstbml.so: undefined symbol: gst_base_src_set_format
  WARNING: erroneous pipeline: could not set property "caps" in element "udpsrc0" to "application/x-rtp, media=(string)audio, clock-rate=(int)48000, encoding-name=(string)X-GST-OPUS-DRAFT-SPITTKA-00, caps=(string)"audio/x-opus\,\\ multistream\=\(boolean\)false\,\\ streamheader\=\(buffer\)\&lt;\\ 4f707573486561640101000080bb0000000000\,\\ 4f707573546167731e000000456e636f6465642077697468204753747265616d6572204f707573656e63010000001a0000004445534352495054494f4e3d617564696f74657374207761766501\\ \&gt;", ssrc=(uint)3090172512, payload=(int)96, clock-base=(uint)4268257583, seqnum-base=(uint)10001"
  </code></pre>