No rtsp stream delivered from camera to QGC app

[demydd]

hi
I am trying to deliver video stream from camera to QGC app on may laptop (no much experience with QGC).
I have filled all fields in Application Settings -> General -> Video Settings:
Source = RTSP Video Stream, RTSP URL = rtsp://192.168.144.108:554/stream=0.
But no video is generated so far and no error as well.

Moreover, i have noticed that the local destination port on my laptop is TCP and hopping from port to port while the remote port is stable. I assume that destination port should be stable as well. The screenshots of weird port behavoir is as follows:

Besides, i can not find the port 5600. as i understood it is used by the gstreammer embedded to QGC.

The rtsp video stream works fine in VLC media player, Mission Planner. Telemetry is being received by QGC well.
I would be grateful for your hints to fix the issue.

My system settings are as follows:

1. Win11;
2. QGC ver4.4.3.
3. Herelink + camera Topotek.