Frequently Asked Question

VMS/NVR cannot detect ITVDesk or live video is not coming
Last Updated 22 days ago

If the VMS/NVR cannot detect ITVDesk or live video is not displayed, troubleshoot discovery and stream transport separately.

ONVIF discovery proves the recorder can find and manage the ITVDesk device. RTSP/RTSPS/SRT playback proves the video stream can actually reach the VMS/NVR.

ITVDesk ONVIF device check
Use ONVIF Device Manager or recorder diagnostics to confirm ONVIF visibility.
ITVDesk selected camera test
Test the selected camera/source before diagnosing the VMS/NVR side.

Step 1 - Confirm ITVDesk is running

  • Open ITVDesk and confirm the selected virtual camera/source is active.
  • Use the built-in test/preview function.
  • Confirm service indicators show that ONVIF and streaming services are running.

Step 2 - Check network and firewall

  • Confirm the VMS/NVR can reach the ITVDesk computer IP address.
  • Allow ITVDesk ONVIF and RTSP/RTSPS ports in Windows/Linux/macOS firewall.
  • Temporarily test with security filtering disabled only in a controlled environment.
  • If discovery is blocked by network segmentation, use manual add by IP address and ONVIF port.

Step 3 - Check authentication and stream profile

  • Verify ONVIF username/password if authentication is enabled.
  • Try a basic H.264 profile first.
  • If ONVIF works but video does not, copy the direct RTSP/RTSPS/SRT URL and test it in the VMS/NVR or VLC.
  • Restart ITVDesk service after port or authentication changes.

Related documentation: Preview & Test | Network Camera Test | Enable Authentication | ONVIF over HTTPS

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