There are some Dahua IP Cameras with built-in mic, when added to the recorder there will be no sound. Follow along with this article to turn on the sound from the built-in Mic.
How to enable Audio Microphone
To enable the Audio Microphone, go to the Web browser on the Camera and follow these instructions:
- In Camera use old web gui:
- In Camera use new web gui 5.0:
Good luck with your setup!!!