1. Web
  2. Web APIs
  3. RTCOutboundRtpStreamStats
  4. keyFramesEncoded

RTCOutboundRtpStreamStats: keyFramesEncoded property

Limited availability

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

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The keyFramesEncoded property of the RTCOutboundRtpStreamStats dictionary represents the total number of key frames successfully encoded in this RTP media stream. This includes, for example, key frames in VP8 (RFC 6386) or IDR-frames in H.264 (RFC 6184).

Note that the number of delta frames is calculated by subtracting this value from the total number of frames (framesEncoded - keyFramesEncoded).

Note: The value does not exist for audio.

Value

A positive integer.

Specifications

Specification
Identifiers for WebRTC's Statistics API
# dom-rtcoutboundrtpstreamstats-keyframesencoded

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
keyFramesEncoded in 'outbound-rtp' stats
Experimental
Chrome – Full support
Chrome 80 (Release date: 2020-02-04)
footnote Full support
Edge – Full support
Edge 80 (Release date: 2020-02-07)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 67 (Release date: 2020-03-03)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 80 (Release date: 2020-02-04)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No 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 13 (Release date: 2020-12-02)
footnote Full support
WebView Android – Full support
WebView Android 80 (Release date: 2020-02-04)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support

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Full support
No support
Experimental. Expect behavior to change in the future.

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