RTCRtpTransceiver: mid property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

The read-only RTCRtpTransceiver interface's mid property specifies the negotiated media ID (mid) which the local and remote peers have agreed upon to uniquely identify the stream's pairing of sender and receiver.

Value

A string which uniquely identifies the pairing of source and destination of the transceiver's stream. Its value is taken from the media ID of the SDP m-line. This value is null if negotiation has not completed.

Specifications

Specification
WebRTC: Real-Time Communication in Browsers
# dom-rtptransceiver-mid

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
mid
Chrome – Full support
Chrome 69 (Release date: 2018-09-04)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 59 (Release date: 2018-03-13)
footnote Full support
Opera – Full support
Opera 56 (Release date: 2018-09-25)
footnote Full support
Safari – Full support
Safari 11 (Release date: 2017-09-19)
footnote Full support
Chrome Android – Full support
Chrome Android 69 (Release date: 2018-09-04)
footnote Full support
Firefox for Android – Full support
Firefox for Android 59 (Release date: 2018-03-13)
footnote Full support
Opera Android – Full support
Opera Android 48 (Release date: 2018-11-08)
footnote Full support
Safari on iOS – Full support
Safari on iOS 11 (Release date: 2017-09-19)
footnote Full support
Samsung Internet – Full support
Samsung Internet 10 (Release date: 2019-08-22)
footnote Full support
WebView Android – Full support
WebView Android 69 (Release date: 2018-09-04)
footnote Full support
WebView on iOS – Full support
WebView on iOS 11 (Release date: 2017-09-19)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also