Tenvis Camera Video Stream External RTSP URL

Im trying to access the live video feed from my home camera which is connected to my home WIFI.

I tried this LOCAL IP url in VLC player and it worked:
rtsp://192.168.111.111/11

But when I try it using my external IP address it doesnt work:
rtsp://admin:[email protected]:554/11

The port is forwarded in router, the port is open and accessible (ive checked using port checking websites). The credentials are correct.

So how do i get the working video feed?