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    Thank you so much Carlos & Oliver!!<br>
    mpeg4videparse do the trick ...<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 29/11/2013 21:43, Carlos Rafael
      Giani wrote:<br>
    </div>
    <blockquote cite="mid:5298FC79.6030403@pseudoterminal.org"
      type="cite">
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      <div class="moz-cite-prefix">On 2013-11-29 21:18, Frédéric Sallé
        wrote:<br>
      </div>
      <blockquote cite="mid:5298F6AF.5080106@gmail.com" type="cite"><i>gst-launch-1.0

          -vvv udpsrc port=11010 caps="application/x-rtp" ! rtpmp4vdepay
          ! avdec_mpeg4 ! avenc_mpeg4 ! matroskamux ! filesink
          location=test.mkv</i><i><br>
        </i></blockquote>
      <br>
      Using an mpeg4 parser helps. Here is the sender pipeline:<br>
      <br>
      gst-launch-1.0 videotestsrc ! avenc_mpeg4 ! rtpmp4vpay
      config-interval=1 ! udpsink host=localhost port=11010<br>
      <br>
      And the receiver:<br>
      <br>
      gst-launch-1.0 -vvv udpsrc port=11010 caps="application/x-rtp" !
      rtpmp4vdepay ! mpeg4videoparse ! matroskamux ! filesink
      location=misc/test.mkv<br>
      <br>
      <br>
      Note three things: One, you might have to use your machine's IP
      address instead of localhost. Second, the config-interval property
      of rtpmp4vpay must be set to a nonzero value (or you need some
      other way to communicate MPEG4 headers to the receiver). Third, I
      added the mpeg4videoparse element between the depayloader and
      matroskamux.<br>
      <br>
      <br>
      cheers<br>
      <br>
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      <pre wrap="">_______________________________________________
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</pre>
    </blockquote>
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