Internet-Security.com TCP port 8554 details

TCP port 8554 is widely used by RTSP (Real Time Streaming Protocol) servers.
GStreamer’s gst-rtsp-server defaults to rtsp://:8554/... in its examples.
Mediamtx (formerly rtsp-simple-server) uses 8554 as its default RTSP port.
VLC can act as an RTSP server and commonly listens on 8554 when configured (e.g., cvlc --rtsp-port 8554).
The LIVE555 Media Server is frequently run on 8554 in practice to avoid privileged ports.
iSpy/Agent DVR exposes an RTSP server on port 8554 by default.
Home Assistant’s go2rtc add-on listens on 8554 for RTSP streams.
Many consumer IP cameras and custom firmware (e.g., Xiaomi Dafang Hacks using v4l2rtspserver) serve RTSP on 8554; attackers often scan this port to access unauthenticated camera feeds or brute-force weak RTSP credentials.

TCP 8554