How to learn the identify of the ‘audio channel’ similar to the PC sound card output?

I wish to acquire from the code the studying of the identify of the audio channel similar to the output of the PC sound card
For these involved in PC video and audio recording, see this put up
The audio channel identify which can then be used within the code described beneath

B4X:

            Dim par As List
            par.Initialize
            par.Add("-f")
            par.Add("gdigrab")
            par.Add("-framerate")
            par.Add("25")
            If width1>100 And height1>100 Then
                par.Add("-offset_x")
                par.Add(left1.As(String))
                par.Add("-offset_y")
                par.Add(top1.As(String))
                par.Add("-video_size")
                par.Add(width1.As(String) & "x" & height1.As(String))
                'par.Add("-show_region")
                'par.Add("1")
            End If
            par.Add("-i")
            par.Add("desktop")
            par.Add("-f")        'May be dshow
            par.Add("dshow")...

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November 10, 2023 at 04:56PM