Inability to connect HIKVision DS-2CD2185FWD-IS with Vision+Audio enabled on the Camera

Answered

Peter Ferris

November 13, 2020 04:37

Nx shows an error message and "No Video Signal" when the camera has Audio enabled in the main and sub-stream. Have tried:

-changing fps (lowering) in main and sub-stream, lowering resolution and turning H.265+ on and off

- different audio codecs and bit rates

The camera initially connected fine, then when discovered the Video Type had to be set to Video&Audio in the main and Sub-Stream was unable to get Nx to show the camera signal.

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  Ichiro

  • Network Optix team

  November 13, 2020 09:21

  Hi Peter Ferris,

  This is likely an issue on v4.0 or before with specific Hikvision firmware issue.

  Please first update the camera to the latest firmware you can get , in geneal, it would be 5.4 or 5.5.
  Then please update the Nx Witness to the latest version patch.

  In-Client Upgrade:

  Build Number:		32045
  Password:		pjz18g

   

  After you updated, please delete the camera and re-add them. 
  You issue would be highly likely solved then.

  If the issue persists, please let us know.
  Thanks.

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  Norman

  • Network Optix team

  November 27, 2020 12:06 Edited

  Hi Peter Ferris,

  We have not heard back from you in a while, so we are going to assume your question has been answered and set this topic to 'Answered'.

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  Peter Ferris

  November 27, 2020 20:48

  My apologies for not providing an update earlier, I only completed the testing yesterday when I was able to return to the studio.

  The update to Nx fixed the "no signal" error from the camera, thank you very much for you quick and accurate guidance, however, I still had no sound.

  The camera firmware was updated, still no sound just connected to the camera, I then switched from chrome to explorer as the access browser and was able to receive an audio stream from the camera.

  I then went back to Nx and checked all the settings, found that if you actually enabled audio in the general tab for the camera and used a supported codec in the camera the sound then worked! (it took a lot more iterations than this to track the issues by trial and error).

  Unfortunately, the sound from the active condenser mic I am using is still quite faint, so I will build a low noise mic preamp to go between the mic and camera to hopefully finally converge on a solution.

   

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