RTCRemoteOutboundRtpStreamStats: roundTripTimeMeasurements property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The roundTripTimeMeasurements property of the RTCRemoteOutboundRtpStreamStats dictionary is a positive integer value that represents the total number valid round of trip time measurements received for this synchronizing source (SSRC).

The count can be used as a measure of the availability and reliability of round trip time measurement data.

Value

A positive number indicating the number of valid round trip time measurements.

This is the number of RTCP Sender Reports (SR) received for this SSRC that contain a "delay since last RR (DLRR)" field from which a valid round trip time can be derived (according to RFC 3611, section 4.5: DLRR Report Block).

Specifications

Specification
Identifiers for WebRTC's Statistics API
# dom-rtcremoteoutboundrtpstreamstats-roundtriptimemeasurements

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
roundTripTimeMeasurements in 'remote-outbound-rtp' stats
Experimental
Chrome – Full support
Chrome 96 (Release date: 2021-11-15)
footnote Full support
Edge – Full support
Edge 96 (Release date: 2021-11-19)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 82 (Release date: 2021-12-02)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 96 (Release date: 2021-11-15)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 67 (Release date: 2022-01-31)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 17 (Release date: 2022-05-04)
footnote Full support
WebView Android – Full support
WebView Android 96 (Release date: 2021-11-15)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support

Legend

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

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.