The read-only creationTime
property on the VideoPlaybackQuality
interface reports the number of milliseconds since the browsing context was created this quality sample was recorded.
Syntax
value = videoPlaybackQuality.creationTime;
Value
A DOMHighResTimeStamp
object which indicates the number of milliseconds that elapased between the time the browsing context was created and the time at which this sample of the video quality was obtained.
For details on how the time is determined, see Performance.now()
.
Example
This example calls getVideoPlaybackQuality()
to obtain a VideoPlaybackQuality
object, then determines what percentage of frames have been lost by either corruption or being dropped. If that exceeds 10% (0.1), a function called lostFramesThresholdExceeded()
is called to, perhaps, update a quality indicator to show an increase in frame loss.
var videoElem = document.getElementById("my_vid");
var quality = videoElem.getVideoPlaybackQuality();
if ((quality.corruptedVideoFrames + quality.droppedVideoFrames)/quality.totalVideoFrames > 0.1) {
lostFramesThresholdExceeded();
}
Specifications
Specification | Status | Comment |
Media Playback QualityThe definition of 'VideoPlaybackQuality.corruptedVideoFrames' in that specification. | Editor's Draft | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Chrome
Full support 23 |
Edge
Full support 12 |
Firefox Full support 42 Full support 42 No support 25 — 42 Notes' Limited support to an allowed list of sites, for example YouTube, Netflix, and other popular streaming sites. The limitation was removed when Media Source Extensions was enabled by default in Firefox 42.
Disabled' From version 25 until version 42 (exclusive): this feature is behind the |
IE Full support 11 Full support 11 Notes' Only works on Windows 8+. |
Opera
Full support 15 |
Safari
Full support 8 |
WebView Android
Full support 4.4.3 |
Chrome Android
? |
Firefox Android
No support No |
Opera Android
Full support 14 |
Safari iOS
No support No |
Samsung Internet Android
? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.'
- Experimental. Expect behavior to change in the future.
- See implementation notes.'
- See implementation notes.
- User must explicitly enable this feature.'
- User must explicitly enable this feature.
See also
- The
HTMLVideoElement.getVideoPlaybackQuality()
method, which returnsVideoPlaybackQuality
objects
VideoPlaybackQuality.creationTime by Mozilla Contributors is licensed under CC-BY-SA 2.5.