trying to understand the usage of the MediaRecorder API

[ajnart]

Hello! I am trying to contribute to screenity by playing around with the code, there are a couple of features I've thought about but I can seem to understand the code.

Could you explain to me how you are able to save the tab's audio as well as the user microphone in Recording.js ?
Are you recoding both in a separate MediaRecorder and somehow getting the users microphone as a separate track and then merging it with the TabCapture screen recording ?

Thanks in advance for your answer !