disorder_error(0, "failed to link GStreamer elements `%s' and `%s'",
GST_OBJECT_NAME(left), GST_OBJECT_NAME(right));
report_element_pads("source", left, gst_element_iterate_src_pads(left));
disorder_error(0, "failed to link GStreamer elements `%s' and `%s'",
GST_OBJECT_NAME(left), GST_OBJECT_NAME(right));
report_element_pads("source", left, gst_element_iterate_src_pads(left));