Hi,
I bought a few of the Oak-D Lite cameras in hope to get them to work as video door bells for front door and side gates. I tried the example and got the same results as above with a still image on VLC network stream, but after reading through some of the github issues I tried the ffplay in another terminal window and it worked for me.
Running camera on Pi 4B and tried VLC on network windows laptop through vlc to host pi.
I will try the rtsp feed on home assistant as this was part of my goal to see if I could implement them as cameras around the house.