You can see it on your dashboard. Create a dashboard, then create a tile for it (if you try to incorporate it on a tile with others, the picture will be too small to be of use). For the tile type, leave the device blank and choose the Video Player Template.
I found the RTSP protocol did not work for my camera and the dashboard tile. I did find out that I can use http://(camera's URL)/img/snapshot.cgi?img=vga for the URL with a refresh interval of 1 second. This does not give video as such, but the frequent update is pretty good for viewing the camera's output without overburdening the Hubitat's system. Longer intervals would have even less impact.
You would need to refer to your camera's documentation to see if you can get it to display an image this way. I am using Lowe's Iris cameras which are Sercom cameras under the Iris name.
