80 is a common port for browsers
Are you able to config your camera by using a browser?
Also, do you use the SADP app?
https://www.hikvision.com/en/support/tools/hitools/clea8b3e4ea7da90a9/
This app locates all cameras on your network and you can config them using this app
All of my cameras are on another subnet so I'd have to install a quick windows machine or something on the same network.
Yes, I can reach all my cameras using browsers or ZoneMinder and others. Only this app can never find/see those cameras. It's very odd.
554 is the RTSP port which is usually the stream url.
I don't know anything about that, I have a simple network
My cameras are just on my wired network
Why don't you set up one off your router on a the same 255.255.255.0 subnet and ip range and test one that way.
my router is 192.168.1.1 - 255.255.255.0
And so my devices are 192.168.1.100, 192.168.1.101.... etc
The cameras can all be accessed easily by a browser and the roku app
Also, I use a app on my smart phone that see them all
This Hikvision app works great on my android devices
https://play.google.com/store/apps/details?id=com.mcu.iVMSHD
Like I said, no issues what so ever accessing them using browsers, it's just this app that won't see them.
I appreciate your help, thanks for trying.