Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/204>
/* That positioner will add metadata to buffers according to its
properties, acting like a proxy for our smart-mixer dynamic pads. */
- positioner = gst_element_factory_make ("framepositioner", "frame_tagger");
+ positioner = gst_element_factory_make ("framepositioner", NULL);
g_object_set (positioner, "zorder",
G_MAXUINT - GES_TIMELINE_ELEMENT_PRIORITY (self), NULL);
g_ptr_array_add (elements, positioner);