1. Web
  2. Web APIs
  3. RTCInboundRtpStreamStats
  4. totalSquaredInterFrameDelay

RTCInboundRtpStreamStats: totalSquaredInterFrameDelay property

Limited availability

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

The totalSquaredInterFrameDelay property of the RTCInboundRtpStreamStats dictionary indicates the sum of the square of each inter-frame delay between consecutively rendered frames. It is recorded after each frame is rendered.

The inter-frame delay variance be calculated from totalInterFrameDelay, totalSquaredInterFrameDelay, and framesRendered, according to the formula: (totalSquaredInterFrameDelay - totalInterFrameDelay^2/ framesRendered)/framesRendered.

Note: The property is undefined for audio streams.

Value

A positive number.

Specifications

Specification
Identifiers for WebRTC's Statistics API
# dom-rtcinboundrtpstreamstats-totalsquaredinterframedelay

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
totalSquaredInterFrameDelay in 'inbound-rtp' stats
Chrome – Full support
Chrome 79 (Release date: 2019-12-10)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 106 (Release date: 2022-10-18)
footnote Full support
Opera – Full support
Opera 66 (Release date: 2020-01-07)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 79 (Release date: 2019-12-17)
footnote Full support
Firefox for Android – Full support
Firefox for Android 106 (Release date: 2022-10-18)
footnote Full support
Opera Android – Full support
Opera Android 57 (Release date: 2020-03-30)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 12 (Release date: 2020-06-19)
footnote Full support
WebView Android – Full support
WebView Android 79 (Release date: 2019-12-17)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support

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

Full support
No support

This page was last modified on by MDN contributors.

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2026 by individual mozilla.org contributors. Content available under a Creative Commons license.