Web/API/HTMLMediaElement/duration

The read-only HTMLMediaElement property duration indicates the length of the element's media in seconds.

Syntax

myDuration = htmlMediaElement.duration

Value

A double-precision floating-point value indicating the duration of the media in seconds. If no media data is available, the value NaN is returned. If the element's media doesn't have a known duration—such as for live media streams—the value of duration is +Infinity.

Examples

var obj = document.createElement('video');
console.log(obj.duration); // NaN

Specifications

Specification	Status	Comment
HTML Living StandardThe definition of 'HTMLMediaElement.duration' in that specification.	Living Standard
HTML5The definition of 'HTMLMediaElement.duration' in that specification.	Recommendation	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	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
duration	Chrome Full support 43	Edge Full support 12	Firefox Full support 3.5	IE Full support 9	Opera Full support Yes	Safari Full support 6	WebView Android Full support 43	Chrome Android Full support 43	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support 4.0

Legend

Full support  

Full support

See also

• Web media technologies
• HTMLMediaElement.currentTime: The current playback position of the media
• The <audio> and <video> elements

HTMLMediaElement.duration by Mozilla Contributors is licensed under CC-BY-SA 2.5.