Linux/AM5728: Ducati encoder issue with Python

Part Number: AM5728

Tool/software: Linux

I'm trying to use ducatih264enc in a GStreamer pipeline, constructed using Python 3.  I can construct pipelines that work correctly, but only if I don't use ducatih264enc.  But when I add ducatih264enc in, the pipeline fails to launch.  Same pipeline works correctly when launched using gst-launch-1.0.

My suspicion is that Python doesn't know how to create the TI proprietary GStreamer elements, but I stress this is only a suspicion at the moment.

Any help on sorting this out would be greatly appreciated.