System sound capture

Usually our users use built-in or external microphone as sound sources. But sometimes user would likes capture sound from system output. There are examples for it: capture sound from YouTube-video or sound from game. So let explain how do it.

Notes: if you would like capture from desktop Skype or Viber please use this instructions:


Step 1: install SoundFlower 

For the task you should install open-source software called SoundFlower.


project page:

So download package from download link and install it step-by-step.  Please use right-click menu for open package (see picture)


Step 2: configuration 

 a) open Application --> Utilities --> Audio MIDI Setup

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b) in bottom-left corner click "+" and select "Create Multi-Output Device"

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c) so you have  "Multi-Output Device". Select it and check checkbox as on picture.

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d) make new device as system output

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Step 3: usage in JustBroadcaster

Use "Soundflower (2ch)"-audio source for capture system output.

Screen Shot 2016-11-04 at 10.47.09.png

Of course you can mix built-in microphone and "Soundflower(2ch)":

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Be aware: we recommended use headphones for this case because you can get auto-echo (see about echo)