RTCRtpSynchronizationSource.voiceActivityFlag

The read-only voiceActivityFlag property of the RTCRtpSynchronizationSource interface indicates whether or not the most recent RTP packet on the source includes voice activity. This is only present if the stream is using the voice activity detection feature; see the RTCOfferOptions flag voiceActivityDetection.

Syntax

var voiceActivity = RTCRtpSynchronizationSource.voiceActivityFlag

Value

A Boolean value which is true if voice activity is present in the most recently received RTP packet played by the associated source, or false if voice activity is not present.

This property is omitted entirely if voice activity detection is not enabled on the source, or if the RFC 6464 extension header isn't present.

Specifications

Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'voiceActivityFlag' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome No support NoEdge ? Firefox Full support 59
Disabled
Full support 59
Disabled
Disabled From version 59: this feature is behind the media.peerconnection.rtpsourcesapi.enable preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera No support NoSafari ? WebView Android No support NoChrome Android No support NoEdge Mobile ? Firefox Android Full support 59
Disabled
Full support 59
Disabled
Disabled From version 59: this feature is behind the media.peerconnection.rtpsourcesapi.enable preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android No support NoSafari iOS ? Samsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
User must explicitly enable this feature.
User must explicitly enable this feature.

Document Tags and Contributors

Contributors to this page: fscholz, Sheppy
Last updated by: fscholz,