RTCRemoteOutboundRtpStreamStats

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since May 2021.

* Some parts of this feature may have varying levels of support.

The RTCRemoteOutboundRtpStreamStats dictionary of the WebRTC API is used to report statistics from a remote endpoint about its outbound RTP stream. This will correspond to an inbound stream that is currently being received by the local RTCPeerConnection object.

The statistics can be obtained by iterating the RTCStatsReport returned by RTCPeerConnection.getStats() until you find a report with the type of remote-outbound-rtp.

Instance properties

Remote outbound specific statistics

localId Optional

A string which is used to find the local RTCInboundRtpStreamStats object that shares the same synchronization source (SSRC).

remoteTimestamp Optional

A DOMHighResTimeStamp specifying the timestamp (on the remote device) at which the statistics in the RTCRemoteOutboundRtpStreamStats object were sent by the remote endpoint. This is different from the timestamp; it represents the time at which the object's statistics were received or generated by the local endpoint.

reportsSent Optional

A positive integer indicating the total number of RTCP Sender Report (SR) blocks sent for this synchronization source (SSRC).

roundTripTimeMeasurements Optional

A positive number that represents the total number of valid round trip time measurements received for this synchronization source (SSRC).

totalRoundTripTime Optional

A number indicating the cumulative sum of all round trip time measurements since the beginning of the session, in seconds. The average round trip time can be computed by dividing totalRoundTripTime by roundTripTimeMeasurements.

Sent RTP stream statistics

bytesSent Optional

A positive integer indicating the total number of bytes sent for this SSRC, including retransmissions.

packetsSent Optional

A positive integer indicating the total number of RTP packets sent for this SSRC, including retransmissions.

Common RTP stream statistics

codecId Optional

A string that uniquely identifies the object that was inspected to produce the RTCCodecStats report associated with this RTP stream.

kind

A string indicating whether the MediaStreamTrack associated with the stream is an audio or a video track.

ssrc

A positive integer that identifies the synchronization source (SSRC) of the RTP packets in this stream.

transportId Optional

A string that uniquely identifies the object that was inspected to produce the RTCTransportStats report associated with this RTP stream.

Common instance properties

The following properties are common to all WebRTC statistics objects.

id

A string that uniquely identifies the object that is being monitored to produce this set of statistics.

timestamp

A DOMHighResTimeStamp object indicating the time at which the sample was taken for this statistics object.

type

A string with the value "remote-outbound-rtp", indicating the type of statistics that the object contains.

Usage notes

The RTCRemoteOutboundRtpStreamStats object's remoteTimestamp property provides statistics based on the received data's NTP timestamp taken from an RTCP Sender Report (SR) block. Be aware that the remote clock may not be synchronized with the local clock (either in current time or speed at which time elapses).

Specifications

Specification
Identifiers for WebRTC's Statistics API
# dom-rtcstatstype-remote-outbound-rtp

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
remote-outbound-rtp stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 27 (Release date: 2014-02-04)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – Full support
Safari 11 (Release date: 2017-09-19)
footnote Full support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 27 (Release date: 2014-02-04)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
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 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – Full support
WebView on iOS 11 (Release date: 2017-09-19)
footnote Full support
bytesSent in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 72 (Release date: 2020-01-07)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 79 (Release date: 2020-07-28)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
codecId in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 98 (Release date: 2022-03-08)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – Full support
Safari 11 (Release date: 2017-09-19)
footnote Full support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 98 (Release date: 2022-03-08)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
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 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – Full support
WebView on iOS 11 (Release date: 2017-09-19)
footnote Full support
id in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 72 (Release date: 2020-01-07)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 79 (Release date: 2020-07-28)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
kind in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 63 (Release date: 2018-10-23)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – Full support
Safari 14 (Release date: 2020-09-16)
footnote Full support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 63 (Release date: 2018-10-23)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – Full support
Safari on iOS 14 (Release date: 2020-09-16)
footnote Full support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – Full support
WebView on iOS 14 (Release date: 2020-09-16)
footnote Full support
localId in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 68 (Release date: 2019-07-09)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 68 (Release date: 2019-07-09)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
packetsSent in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 72 (Release date: 2020-01-07)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 79 (Release date: 2020-07-28)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
remoteTimestamp in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 79 (Release date: 2020-07-28)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 79 (Release date: 2020-07-28)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
reportsSent in 'remote-outbound-rtp' stats
Experimental
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
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
ssrc in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 27 (Release date: 2014-02-04)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – Full support
Safari 11 (Release date: 2017-09-19)
footnote Full support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 27 (Release date: 2014-02-04)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
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 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – Full support
WebView on iOS 11 (Release date: 2017-09-19)
footnote Full support
timestamp in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 72 (Release date: 2020-01-07)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 79 (Release date: 2020-07-28)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support
totalRoundTripTime 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
transportId in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – Full support
Safari 11 (Release date: 2017-09-19)
footnote Full support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
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 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
footnote Full support
WebView on iOS – Full support
WebView on iOS 11 (Release date: 2017-09-19)
footnote Full support
type in 'remote-outbound-rtp' stats
Chrome – Full support
Chrome 91 (Release date: 2021-05-25)
footnote Full support
Edge – Full support
Edge 91 (Release date: 2021-05-27)
footnote Full support
Firefox – Full support
Firefox 72 (Release date: 2020-01-07)
footnote Full support
Opera – Full support
Opera 77 (Release date: 2021-06-09)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 91 (Release date: 2021-05-25)
footnote Full support
Firefox for Android – Full support
Firefox for Android 79 (Release date: 2020-07-28)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 16 (Release date: 2021-11-25)
footnote Full support
WebView Android – Full support
WebView Android 91 (Release date: 2021-05-25)
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.