This article will help you troubleshoot why you cannot hear sound from the camera

Not being able to hear audio from a camera may be caused by one or more of the following reasons:

1. The camera hardware does not have a microphone

Some camera models do not support audio recording.

• Please refer to the camera user manual or the product specifications on our official website to confirm whether your camera supports audio.

2. The camera microphone function is manually disabled

Even if the camera has a built-in microphone, the audio function may have been manually turned off in the settings.

How to enable audio recording?

CYVIO App:

1. Log in to the CYVIO App and go to the main page.

2. Go to Camera Settings.

3. Select Encoding & Recording Settings.

4. Choose Main Stream or Sub Stream.

5. Turn on the Audio toggle.

NVR System:

1. Log in to the NVR system and enter the main interface.

2. Right-click and select Configuration.

3. Go to Common Settings → Video Parameters.

4. Select the corresponding camera’s Main Stream or Sub Stream.

5. Enable the Audio option.

Check whether the microphone volume is set too low or muted

CYVIO App:

1. Log in to the App and go to the main page.

2. Enter Camera Settings.

3. Select Common Settings.

4. Go to Audio Settings.

5. Check and adjust the Microphone Volume.

NVR System:

1. Log in to the NVR system and enter the main interface.

2. Right-click and select Configuration.

3. Go to Common Settings → Video Parameters.

4. Select Audio.

5. Check and adjust the Microphone Volume.

3. Technical or connection issues

• Hardware failure: The camera’s microphone may be physically damaged.
• Network or configuration issues: As the camera is a network device, audio stream transmission problems may prevent audio from being transmitted together with video.
• Software incompatibility: The NVR or platform in use may not support the camera’s audio codec.

4. Environmental factors

If the camera has a microphone but no sound can be heard, the issue may be caused by environmental conditions:

• The surrounding sound level is too low.
• For outdoor cameras, the microphone hole may be blocked by dust or debris.
• The speaker or playback device being used has an issue.