A working Dahua camera doesn't have to automatically disappear when you replace the recorder. First, check which connection the new recorder accepts and which features you want to keep. Opening a camera image is a first step; it doesn't say much about recording sound, events, or control.
Note in addition to the image and recording any microphone, PTZ control, detection settings, and viewing via the app. Include which functions are necessary and which are only convenient. This list prevents a connection from being technically successful but the daily workflow from deteriorating. Keep the channel names and current recording settings for replacement.
Search for the exact camera model and recorder or client in the ONVIF product register. The registration is associated with a certain software or firmware version. Compare the supported profiles; only a brand name or ONVIF logo on a sales text is insufficient. Check additional features separately in the recorder's documentation.
Use a free channel or a scheduled test setup. Record the address, chosen protocol, and access rights. First test the connection and then test the desired image settings. A too heavy stream can affect another limitation than the number of available channels. Therefore, do not lower settings arbitrarily, but compare them to the recording capacity of the new recorder.
Record a recognizable sample and search for it in the same way as it is needed later daily. Check the necessary additional features one by one. Explicitly note what is missing before disconnecting the old recorder. If an essential alert is not taken, discuss another combination or another alert route instead of only discovering that limitation after an incident.
No. The exact model, firmware, profiles, and recorder capacity determine which combination is suitable. Additionally, test the functions that are necessary for your installation.
That is not necessary by itself. A test with the existing cameras shows what remains usable and what limitations the new combination has.
