How can I use Opus Codec from JavaScript

Question

I would like to see if it\'s possible to have direct access to Opus using getUserMedia or anything similar from the latest browsers.

I\'ve been researching

Answer 1

Unfortunately, it isn't currently possible to access browser codecs directly from JavaScript for encoding. The only way to do it would be to utilize WebRTC and set up recording on the server. I've tried this by compiling libjingle with some other code out of Chromium to get it to run on a Node.js server... it's almost impossible.

The only thing you can do currently is send raw PCM data to your server. This takes up quite a bit of bandwidth, but you can minimize that by converting the float32 samples down to 16 bit (or 8 bit if your speech recognition can handle it).

Hopefully the media recorder API will show up soon so we can use browser codecs.