[LAU] How to combine microphone audio and music from application to pipe to video conference

david gnome at hawaii.rr.com
Sat May 16 08:07:46 CEST 2020

On 5/15/20 7:56 PM, david wrote:
> On 5/15/20 7:25 PM, Len Ovens wrote:
>> On Fri, 15 May 2020, Samir Parikh wrote:
>>> I am trying to combine the audio from my microphone (either built in
>>> microphone from my laptop or bluetooth headset) with music playing
>>> from Rhythmbox Music Player running on Ubuntu 16.04 and pipe that as
>>> the audio input to video conference services such as Jitsi.
>>> I don't know much about Linux audio internals and wasn't sure how to
>>> do this.  Can I do this completely via the operating system using
>>> Pulse Audio?  Do I need to do something with Jack?  Or do I need
>>> specialized software such as OBS, Ardour or Reaper?
>> OBS is probably the easiest way. You can add your local video if 
>> needed as well. OBS will work fine with just pulse or jack. I don't 
>> know much about jitsi it self but if it uses pulse as the default 
>> device there should be no problem.
> I just checked the Jitsi Meet using Chromium (they recommend 
> Chrome/Chromium, apparently Jitsi uses some newer streaming standards 
> that Firefox either doesn't fully support or is just simply too slow). 
> For microphone, it offers my USB headset, USB audio, Builtin and 
> Pulseaudo JACK source. Which I remember I do have Pulseaudio set up 
> here feeding to JACK sink. Output include the preceding plus PA Jack 
> sink.
> I think that means you could have either your streaming audio going 
> into it, or your microphone, but not both.
FWIW, I just tried using the PA Jack Source as my "microphone" input. 
Not a sound, even with music playing into it. So, good luck. If you can 
do live streaming on YouTube, I suppose you could live stream your audio 
that way and play the YT URL in Jitsi.

David W. Jones
gnome at hawaii.rr.com
authenticity, honesty, community
"My password is the last 8 digits of π."

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