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.
var mediaID = RTCRtpTransceiver.mid;
A DOMString 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.
| Specification | Status | Comment |
|---|---|---|
| WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCRtpTransceiver.mid' in that specification. | Candidate Recommendation |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | No | ? | 59 | No | No | ? |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | No | No | ? | 59 | No | ? | No |
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https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpTransceiver/mid