Python custom plugin

[wildiness]

Hello. Do you have gstreamer1.0-python3-plugin-loader installed via apt?

Cannot load python gstreamer elements

Here’s another thread that might be helpful

GStreamer 1.24 Python blacklisted

Thanks for pointing that out. It turns out that the issue is not 1.24-specific. This discussion provides some hints, and setting PYTHONPATH=/usr/lib/python3.9/site-packages/ seems to resolve the issue.