No reason to be changing port numbers from default thinking it makes it more secure. It is a false sense of security and many things are hardcoded with what the expected port will be regardless of what someone changes it to.
Hit the find/inspect button in BI for this camera and post the pop-up window - you may have an ONVIF password issue as well that is mucking it up.
It was many years ago I had something that required me to change the default port of my old cam for a reason I no longer remember - It became a habit continued to this day. Here is the find/inspect. Setting the cam back to port 80 made no difference so I put it back to what I'm using for now.
Opening 192.168.60.51 port 4561...
HTTP Get / request...
OK
ONVIF GetSystemDateAndTime
2026-03-01T14:08:04.000Z
Requesting device information...
Manufacturer: General
Model: IPC-T54IR-ZE-S3
FirmwareVersion: 3.142.0000000.8.R
GetCapabilities...
Querying services
Has Imaging services: /onvif/imaging_service
Has media services: /onvif/media_service
Has RTP_RTSP_TCP, requesting profiles
profile token MediaProfile00000
profile name MediaProfile_Channel1_MainStream
profile source is 00000
profile token MediaProfile00001
profile name MediaProfile_Channel1_SubStream1
profile source is 00000
profile token MediaProfile00002
profile name MediaProfile_Channel1_SubStream2
profile source is 00000
profile token MediaProfile00003
profile name MediaProfile_Channel1_SubStream3
profile source is 00000
requesting URI for profile MediaProfile00000
RTSP URI: rtsp:/192.168.60.51:554/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif
requesting URI for profile MediaProfile00001
RTSP URI: rtsp:/192.168.60.51:554/cam/realmonitor?channel=1&subtype=1&unicast=true&proto=Onvif
requesting URI for profile MediaProfile00002
RTSP URI: rtsp:/192.168.60.51:554/cam/realmonitor?channel=1&subtype=2&unicast=true&proto=Onvif
requesting URI for profile MediaProfile00003
RTSP URI: rtsp:/192.168.60.51:554/cam/realmonitor?channel=1&subtype=extra3&unicast=true&proto=Onvif
Has Event services: /onvif/event_service
Has WSPullPointSupport
RelayOutputs: 0
InputConnectors: 0
Has Device IO services: /onvif/deviceIO_service
AudioOutputs: 0
Has PTZ service: /onvif/ptz_service
Done