The Web Real-Time Communications Working Group has published a First Public Working Draft of WebRTC Encoded Transform. The goal of this work is to define an API for processing encoded media in WebRTC, for example for voice processing, background removal, dynamic control of codec parameters, etc. This document specifies an API surface for manipulating the bits on MediaStreamTracks being sent via an RTCPeerConnection.
Original source: https://www.w3.org/blog/news/archives/9258