message: videoio: turn off syncronized sink in GStreamer
diff: @@ -924,6 +924,11 @@ bool GStreamerCapture::open(const String &filename_)
  gst_app_sink_set_max_buffers(GST_APP_SINK(sink.get()), 1);
  }
  + if (!manualpipeline)
  + {
  + gst_base_sink_set_sync(GST_BASE_SINK(sink.get()), FALSE);
  + }
  +
  //do not emit signals: all calls will be synchronous and blocking
  gst_app_sink_set_emit_signals (GST_APP_SINK(sink.get()), FALSE);
  