GetUserMedia get computer audio
<p>I'm trying to share the computer's audio via webRTC and GetUserMedia, but I don't know if it is possible to obtain this stream.</p>

<p>On Linux and Firefox, when I request the GetUserMedia with the following constrains</p>

<pre><code>navigator.mediaDevices.getUserMedia({video: false, audio:true})
</code></pre>

<p>In the popup I can choose <strong>alsa_output.pci</strong> and share the computer's audio. But when I tried on Chrome/Chromium or I changed to Windows neither Firefox nor Chrome show me any option to capture the internal audio, only my headset microphone.</p>

<p>Are there any option for the <code>getUserMedia</code> or any workaround to get this audio? I tried all the examples of <a href="https://webrtc.github.io/samples" rel="nofollow">WebRTC samples</a> and <a href="https://www.webrtc-experiment.com/" rel="nofollow">Muaz's examples</a> but no one displayed me this option, only Firefox under Linux.</p>