Cannot inspect built libnice gstreamer elements
The recent docs update means that any plugin built by a non gstreamer module will not be scanned by the plugin scanner and thus will not be included in the generated
GST_PLUGIN_PATH and thus in the registry.
On concrete example of this is libnice's gstreamer elements however there are also cases where augmenting the built projects using the
custom_subprojects option will also not include those projects' gstreamer plugins in the plugin paths/registry.