System Audio Streaming

[Joe Hennessy - Priest]

Is there any way to capture system audio with Ant Media Server? I have tried fiddling with both the Ant Media Server Screen Share extension's source code and webrtc_adaptor.js but cannot find a way to add system audio to a stream despite this being possible with the chrome.desktopCapture API.

I have so far managed to modify the code such that Chrome will ask the user if they want to enable audio capture when selecting which window to share but cannot figure out how to send this audio track to the server.

If this is possible but requires some tinkering, could anyone possibly direct me to what exactly needs changing in the extension and webrtc_adaptor to enable this? I would greatly appreciate your help.

[Khan Honney]

There's a blog on audio-only broadcast:
https://antmedia.io/how-to-setup-a-radio-station-with-antmedia-enterprise/

There's ultra-low latency audio publish sample here:
/usr/local/antmedia/webapps/WebRTCAppEE/audio_publish.html

There's ultra-low latency audio player sample here:
/usr/local/antmedia/webapps/WebRTCAppEE/audio_player.html

You can access those sample audio-only app from your local instance as follows:
http://localhost:5080/WebRTCAppEE/audio_publish.html
http://localhost:5080/WebRTCAppEE/audio_player.html

[Joe Hennessy - Priest]

Hi Hakan,

This isn't exactly what I'm looking for. I understand how to stream microphone audio with Ant Media Server - I am asking if it possible to stream audio from the user's desktop (as opposed to from their microphone) via the Screen Share extension.

Joe

[Khan Honney]

The default behavior of the screen share extension is mixing the microphone with the desktop image.

Did you check your microphone with another application whether it's running smoothly?

[Joe Hennessy - Priest]

Is there a way to change this default behaviour? I don't mind modifying the source code for the extension or the webrtc_adaptor, I would just like to be able to get both audio and image from the desktop instead of audio from the microphone and image from the desktop.

[Khan Honney]

There might be several audio input channels  (recording) on the computer.

The embedded microphone is one of them.

You change (redirect) desktop audio output as a virtual microphone input via http://jackaudio.org/

Would you please try it, and inform us of the result you get.