This feature is well established and works across many devices and browser versions. It’s been available across browsers since August 2022.
The concealedSamples property of the RTCInboundRtpStreamStats dictionary indicates the total number of concealed samples for the received audio track over the lifetime of this stats object.
A concealed sample is a sample that was lost or arrived too late to be played out, and therefore had to be replaced with a locally generated synthesized sample. Note that lost samples are reported in packetsLost, while late packets are reported in fecPacketsDiscarded.
Note: The value is undefined for video streams.
A positive integer.
| Specification |
|---|
| Identifiers for WebRTC's Statistics API> # dom-rtcinboundrtpstreamstats-concealedsamples> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
concealedSamples |
86 | 86 | 104 | 72 | 14.1 | 86 | 104 | 61 | 14.5 | 14.0 | 86 | 14.5 |
RTCInboundRtpStreamStats.silentConcealedSamplesRTCInboundRtpStreamStats.concealmentEvents
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/RTCInboundRtpStreamStats/concealedSamples