Use Gstreamer value serialization/deserialization
Use Gstreamer value serialization/deserialization

Instead of throwing and error saying that an unknown type can't be
updated, use GStreamer magical serialization and deserialization
functions to try to stringify a value.

RidgeRun/gstd-1.x,RidgeRun/gstd-1.x,RidgeRun/gstd-1.x,RidgeRun/gstd-1.x