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

RTCInboundRtpStreamStats: keyFramesDecoded property

Limited availability

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

The keyFramesDecoded property of the RTCInboundRtpStreamStats dictionary represents the total number of key frames successfully decoded 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 (framesDecoded - keyFramesEncoded).

Note: The property is undefined for audio streams.

Value

A positive integer.

Specifications

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

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
keyFramesDecoded 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 142 (Release date: 2025-08-19)
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 142 (Release date: 2025-08-19)
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

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Full support
No support

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