This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The buffered read-only property of HTMLMediaElement objects returns a new static normalized TimeRanges object that represents the ranges of the media resource, if any, that the user agent has buffered at the moment the buffered property is accessed.
A new static normalized TimeRanges object that represents the ranges of the media resource, if any, that the user agent has buffered at the moment the buffered property is accessed.
const obj = document.createElement("video");
console.log(obj.buffered); // TimeRanges { length: 0 }
| Specification |
|---|
| HTML> # dom-media-buffered-dev> |
| Media Source Extensions™> # htmlmediaelement-extensions-buffered> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
buffered |
3 | 12 | 4 | ≤12.1 | 3.1 | 18 | 4 | ≤12.1 | 3 | 1.0 | 4.4 | 3 |
HTMLMediaElement: Interface used to define the HTMLMediaElement.buffered property
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/buffered