RTCRtpTransceiver.stop()

Category: JavaScript
Type: New or changed feature
Status: Enabled by default (Chrome 88)
Intent stage: Shipped

Summary

Transceivers allow the sending and/or receiving of media in WebRTC. Stopping a transceiver makes it permanently inactive.

Motivation

Stopping a transceiver allows freeing its network port, encoder and decoder resources. This also makes its m= section in the SDP reusable by future transceivers, preventing the SDP from growing indefinitely as transceivers are added and removed. This is part of "Perfect Negotiation", which makes signaling in WebRTC race-free and less error-prone. For more details, see https://docs.google.com/presentation/d/1xcvf0udNeSH7s1FOY7RRqr1dEFvokZjn-MZPjwy3iXQ/edit?usp=sharing.

Standards & signals

Specification: https://w3c.github.io/webrtc-pc/#dom-rtcrtptransceiver-stop
Firefox: Shipped/Shipping — With "stopping" state In Development. Confirmed in a public W3C WebRTC WG meeting
Safari: Shipped/Shipping
Web developers: No signals
Tracking bug: https://crbug.com/980879

Docs: N/A

Explainers: N/A

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