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HTMLMediaElement: playbackRate property

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.

If playbackRate is negative, the media is played backwards.

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.

Value

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)

Examples

const obj = document.createElement("video");
console.log(obj.playbackRate); // Expected Output: 1

Specifications

Specification
HTML Standard # dom-media-playbackrate-dev

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`playbackRate`	3 Setting the `playbackRate` to a negative value will throw an error.	12 Setting the `playbackRate` to a negative value will throw an error.	20 Setting the `playbackRate` to a negative value will throw an error.	9	≤12.1 Setting the `playbackRate` to a negative value will throw an error.	3.1	4.4 Setting the `playbackRate` to a negative value will throw an error.	18 Setting the `playbackRate` to a negative value will throw an error.	20 Setting the `playbackRate` to a negative value will throw an error.	≤12.1 Setting the `playbackRate` to a negative value will throw an error.	3	1.0 Setting the `playbackRate` to a negative value will throw an error.

Value

Examples

Specifications

Browser compatibility

See also