Hi @k-adarsh,
Have you tried opening the RTSP stream via VLC player?
Kindly refer to this link for the USB-to-Ethernet adapter that we have tested on our end.
Possible to share which USB Ethernet adapter model or brand you are using?
May I also check if you are using the default JXF37 sensor? We can provide a test firmware for you to try, which may help narrow down whether the issue is related to hardware or the source code.
Support for 4G USB dongles is currently under discussion and development.