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

The VideoPlaybackQuality.droppedVideoFrames read-only property returns an unsigned long containing the number of video frames dropped since the creation of the associated HTMLVideoElement.


value = videoPlaybackQuality.droppedVideoFrames;


var videoElt = document.getElementById('my_vid');
var quality = videoElt.getVideoPlaybackQuality();



Specification Status Comment
Media Source Extensions
The definition of 'VideoPlaybackQuality.droppedVideoFrames' in that specification.
Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support2312


25 — 421 2

FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support33 ? Yes No30 No ?

1. Limited support to a whitelist of sites, for example YouTube, Netflix, and other popular streaming sites. The whitelist was removed when Media Source Extensions was enabled by default in Firefox 42.

2. From version 25 until version 42 (exclusive): this feature is behind the media.mediasource.enabled preference. To change preferences in Firefox, visit about:config.

3. Only works on Windows 8+.

See also

Document Tags and Contributors

Contributors to this page: fscholz, erikadoyle, nmve, chrisdavidmills, kscarfone, teoli
Last updated by: fscholz,