Can the Browser Record Non-Microphone Sound?

I am currently looking for a way to record sounds other than microphones in my browser (mainly chrome).

I succeeded in recording from the microphone by using getUserMedia.
I would also like to record the sound (system sound, game sound, etc.) that is being output without going through the browser.

The solution is
·Include recording applications in the client
·Insert and control virtual devices
I think it's possible to do this, but
You want to use it on multiple platforms and
I want to send a recording from my browser, so
I would like to complete it just by creating a browser.

Is there a way to record sounds other than microphones in the browser?
Please let me know the information that can be solved by creating an API or chrome apps plug-in.
Thank you for your cooperation.