Created attachment 235397 [details] [review]
Patch which fixes the leak.

This code leaks when the incoming caps are equal to this->caps;

    case GST_EVENT_CAPS:{
      gst_event_parse_caps (event, &caps);
      if (this->caps == NULL || !gst_caps_is_equal (this->caps, caps)) {
        GST_INFO_OBJECT (pad, "caps changed to %" GST_PTR_FORMAT, caps);
        gst_buffer_replace (&outbuffer, NULL);
        gst_caps_replace (&this->caps, caps);
        outbuffer = gst_gdp_buffer_from_caps (this, caps);
        if (outbuffer == NULL)
          goto no_buffer_from_caps;

        GST_BUFFER_DURATION (outbuffer) = 0;
        GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_HEADER);
        if (this->caps_buf)
          gst_buffer_unref (this->caps_buf);
        this->caps_buf = outbuffer;
        gst_gdp_pay_reset_streamheader (this);
      }
      break;
    }