AVer VC520 Pro3 - Audio Input and Output; Phone In Jack Options; HDMI Audio and Sync

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microphone’s 3.5 mm cable.
HDMI Audio
When connected to HDMI, set your audio source from:
 Off
 Local Mic
 Remote Sound

Local Mic + Remote Sound
HDMI Output Sync
This function is only available when HDMI Audio > Remote
Sound Only is selected.
Select a mode for the HDMI Output Sync:
 Auto
 Manual: Drag the slider below the adjust the HDMI Output
Delay Time (0~500 ms)
RTSP/RTMP Audio
When connected to RTSP/RTMP, set your Audio source from:
 Off
 Local Mic
 Remote Sound

Local Mic + Remote Sound