Once discovered, you must define how the client views the feed. Navigate to Settings > Video Stream.
Client Optimization: Set the viewer to use the Sub Stream for the live grid, but to switch to Main Stream when you double-click a camera to full-screen. This saves CPU usage dramatically. Once discovered, you must define how the client
Even with perfect settings, new installs fail. Here is the diagnostic checklist based on intext errors: Client Optimization: Set the viewer to use the
| Error Message | Most Likely Cause | The Fix (Client Setting) |
| :--- | :--- | :--- |
| "Login Failed" | Password changed or default creds wrong | Factory reset camera; update saved password in Client Settings > Security. |
| "No Video Stream" | Protocol mismatch (H.265 vs H.264) | In Client Settings > Codec, force the client to decode H.264 (older PCs). |
| "Onvif Discovery Failed" | Firewall blocking port 3702 | Add inbound rule to Windows Defender Firewall for ONVIF (UDP 3702). |
| "Stuttering / Lag" | Network congestion or wrong stream | Switch the viewer from Main Stream to Sub Stream for live view. |
| "Blue Screen on PTZ" | Incorrect OSD resolution | Log into camera via web browser; set OSD resolution to match sensor (e.g., 1920x1080). | you have two paths:
Upon first opening your viewer client (e.g., "IP Camera Viewer 5.0" for Windows):
If you are trying to modify an existing IP camera viewer installation:
If you want to view your new camera installation when away from home (remote client access), you have two paths: