Web/API/HTMLMediaElement/playbackRate

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 not 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 and is the same for every speed. Some browsers implement the non-standard HTMLMediaElement.preservesPitch ' property to control this.

Syntax

// video
video.playbackRate = 1.5;
// audio
audio.playbackRate = 1.0;

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)

Example

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

Specifications

Specification	Status	Comment
HTML Living StandardThe definition of 'HTMLMediaElement.playbackRate' in that specification.	Living Standard
HTML5The definition of 'HTMLMediaElement.playbackRate' in that specification.	Recommendation

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`playbackRate`	Chrome Full support 43	Edge Full support 12	Firefox Full support 20	IE Full support 9	Opera Full support ≤12.1	Safari Full support 3.1	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 20	Opera Android Full support ≤12.1	Safari iOS Full support 2	Samsung Internet Android Full support Yes

Legend

Full support: Full support