...
Auto (same as video, SRT source)
External (NEW since v.6.2): When utilizing the External option, a channel can utilize any audio input available within the macOS Sound input preferences as the audio source. Therefore, USB audio interfaces such as the Focusrite Scarlett 2i2 are now supported. Furthermore, the Dante Virtual Soundcard can be utilized as an Audio Input option. Additionally, a delay in frames for the video pipeline can be added here. Please note that the delay option is only available when using the External Audio Input option.
...
Caller: In Caller mode, the SRT Channel will initiate the connection.
Listener: In Listener mode, the SRT Channel will wait to receive a connection from another SRT compatible device.
Server IP (Host) : Port:
IP: Depending on the Connection Mode, either add the IP Address of the just:in engine machine or of the SRT source the channel should connect to.
Port: Specify the connection port here. Must be the same port as the SRT source.
...