Web Audio API - record to MP3?

Question

I am asking because I couldn\'t find the answer anywhere. I have successfully implemented RecorderJS in order to record microphone input in JS. However, the recorded file is WAV

Answer 1

I have found a nice library with live demos: MediaStreamRecorder

One of demos is here: Audio Recording

RecordRTC is also can be useful but MSR it seems is easier to start with.