This feature is not Baseline because it does not work in some of the most widely-used browsers.
The HTMLMediaElement.playbackRate property sets the rate at which the media is being played back. This is used to implement user controls for fast forward, slow motion, and so forth. The normal playback rate is multiplied by this value to obtain the current rate, so a value of 1.0 indicates normal speed.
A negative playbackRate value indicates that the media should be played backwards, but support for this is not yet widespread. (See browser compatibility for details.)
The audio is muted when the fast forward or slow motion is outside a useful range (for example, Gecko mutes the sound outside the range 0.25 to 4.0).
The pitch of the audio is corrected by default. You can disable pitch correction using the HTMLMediaElement.preservesPitch property.
A double. 1.0 is "normal speed," values lower than 1.0 make the media play slower than normal, higher values make it play faster. (Default: 1.0)
const obj = document.createElement("video");
console.log(obj.playbackRate); // Expected Output: 1
| Specification |
|---|
| HTML> # dom-media-playbackrate-dev> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
playbackRate |
3Setting theplaybackRate to a negative value will throw an error. |
12Setting theplaybackRate to a negative value will throw an error. |
20Setting theplaybackRate to a negative value will throw an error. |
≤12.1Setting theplaybackRate to a negative value will throw an error. |
3.1 | 18Setting theplaybackRate to a negative value will throw an error. |
20Setting theplaybackRate to a negative value will throw an error. |
≤12.1Setting theplaybackRate to a negative value will throw an error. |
3 | 1.0Setting theplaybackRate to a negative value will throw an error. |
4.4Setting theplaybackRate to a negative value will throw an error. |
3 |
HTMLMediaElement: Interface used to define the HTMLMediaElement.playbackRate propertyplaybackRate in Firefox and Blink (Chrome, etc.)playbackRate
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/playbackRate