as i said - u have to add the stream of the iphone to your OBS as media-source
-> now u need to find a way to use your iphone to stream a RTSP/RTMP stream (doesnt matter if over the internet or your (local)network) (like https://itunes.apple.com/de/app/broadcast-me/id491982406?mt=8)
-> if most/all of your cams are not in your local network u can take an cheap vServer (have traffic in mind) instead of raspberry pi
-> and/or buy an IP-CAM (they allready stream and you can simply add it to OBS) (https://geizhals.eu/?cat=camsec&xf=...ist=&mail=&sort=p&bl1_id=30&togglecountry=set) starting at 30$
I appreciate your patience with me. I have created an RTMP server and configured it. I also added the media stream in OBS, but I am not seeing any video when I open the properties of "Media Source" in OBS? How do I verify on the OBS side that the stream is actually connected?