RTCTransformEvent: transformer property

Baseline 2025
Newly available

Since ⁨October 2025⁩, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The read-only transformer property of the RTCTransformEvent interface returns the RTCRtpScriptTransformer associated with the event.

The property exposes the WebRTC sender or receiver pipeline as a readable and writable stream of encoded media frames, which a WebRTC Encoded Transform can insert itself into in order to modify frames.