RTCRemoteInboundRtpStreamStats: roundTripTime 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 roundTripTime property of the RTCRemoteInboundRtpStreamStats dictionary indicates the estimated round trip time (RTT) for this synchronization source (SSRC), in seconds.

The round trip time is calculated based on the RTCP timestamps in the RTCP Sender Report (SR), and requires a report with a Delay Since Last SR (DLSR) block that has a value other than 0. The property does not exist until such a report has been received.

Note that the average RTT for the session can be computed by dividing totalRoundTripTime by roundTripTimeMeasurements.

Value

A number indicating the current estimated round trip time, in seconds.

Specifications

Specification
Identifiers for WebRTC's Statistics API
# dom-rtcremoteinboundrtpstreamstats-roundtriptime

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
roundTripTime in 'remote-inbound-rtp' stats

Legend

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

Full support
Full support

See also