The pkg-config executable from the gstreamer installation must be in the path.
python simple_server.py --disable-ssl
sendrecv.exe --our-id=123 --server=ws://127.0.0.1:8443 --disable-ssl
sendrecv.exe --peer-id=123 --server=ws://127.0.0.1:8443 --disable-ssl
or using https://ntfy.sh/
sendrecv.exe --session-id=123 --autovideosrc --autoaudiosrc
sendrecv.exe --session-id=123