Enabling Mic Connected to Audio In of NVR

[normel]

Hello.
I have connected a microphone to the Audio IN port, behind the nvr. But i cannot find any option in the web interface to enable it.. Also connected 3 ip cameras.

Listening also fails. At the record parameters of channel 1, just VIDEO is available, Video & Audio isnt..

 

[Securame]

It doesn't work like that.
The encoding is done on the cameras end; if you want to have audio on a camera, you need either a camera with integrated microphone, or a camera with audio input and connect the microphone to the camera.

 

[normel]

So what is the Audio in - out connection for at the back of the NVR? is it useless?

 

[Securame]

Bi directional audio. You can "speak" from the NVR to any camera that has speaker or audio output.

 

[normel]

Thank you very much for the reply. I remember i had connected a Mic to the audio outputs at the back of dvr, but it seems like this is not the same on the NVR. Thanks for the help and fast reply !

 

[Securame]

Nope, not the same. That is indeed how it works on DVRs, since the DVR will take the video feed+audio feed and encode it on a single stream. But with NVRs and IP cameras, the encoding is done by the camera, and it just sends a stream of 0s and 1s to the NVR.