title: Gstreamer video on Android (Qt C++)
body: <p>I try to use Gstreamer on Android via Qt C++.
  I already use Gstreamer on these platforms but now I have an issues with the plugins:</p>
  
  <pre><code>G_BEGIN_DECLS
  GST_PLUGIN_STATIC_DECLARE(coreelements);
  GST_PLUGIN_STATIC_DECLARE(audioconvert);
  GST_PLUGIN_STATIC_DECLARE(playback);
  G_END_DECLS
  void MainWindow::play(){
      GST_PLUGIN_STATIC_REGISTER(coreelements);
      GST_PLUGIN_STATIC_REGISTER(audioconvert);
      GST_PLUGIN_STATIC_REGISTER(playback);
  
      GstElement *pipeline;
      GError *error = NULL;
  
      pipeline = gst_parse_launch("playbin uri=http://docs.gstreamer.com/media/sintel_trailer-368p.ogv", &amp;error);
      if (!pipeline) {
          ui-&gt;label-&gt;setText("error");
          return;
      }
      if(error != NULL){
          qDebug("GST error: ");
          qDebug(error-&gt;message);
  
      }else{
          qDebug("GST without errors");
      }
  
      gst_element_set_state(pipeline, GST_STATE_READY);
      gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY(pipeline), this-&gt;ui-&gt;playback_widget-&gt;winId());
      gst_element_set_state(pipeline, GST_STATE_PLAYING);
      ui-&gt;label-&gt;setText("Playing...");
  }
  </code></pre>
  
  <p>After executing of this code I don't get either video in the playback_widget or the audio, but error var is clear(equals NULL) and label set to "Playing...". So, maybe I missed something?</p>