Hi,
Please run the command like:
... location="rtsp://admin:admin1234@192.168.1.202:554/cam/realmonitor? channel=1&subtype=1" ...
instead of
... location=rtsp://admin:admin1234@192.168.1.202:554/cam/realmonitor? channel=1&subtype=1 ...
Add " " to contain the URI.
For running sample apps, please try
Python Bindings for DeepStream not working with RTSP stream - #8 by DaneLLL