I have two PVC2300 cameras. So after a time in working conditions built-in microphones (of both cameras) begin to produce a noise, quite loud and disturbing. However, it happens both while operating on network adapter and PoE adapter. Cameras’ firmware has been updated to 188.8.131.52. But still there is aforesaid noise while filming with СISCO software as well as third-party one.
I get vide and audio from camera's over rtsp (rtsp://localip/img/media.sav)
Are the cameras in the same room? I have seen feedback in this case from one to the other causing this. Turn audio off on one completely if this is the case to see if that help. You probably wont need the other anyway if this was the case for audio.
The cameras can have Listen or Listen & Send (duplex) mode aet under audio and also a codec can be selected. Try adjusting these just to see if it can be reduced or eliminated.
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