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HTMLMediaElement.duration

The HTMLMediaElement.duration property gives the length of the media in seconds, or zero if no media data is available.

Syntax

var myDuration = audioOrVideo.duration

Value

A double. If the media data is available but the length is unknown, this value is NaN. If the media is streamed and has no predefined length, the value is Inf.

Example

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

Specifications

Specification Status Comment
WHATWG HTML Living Standard
The definition of 'HTMLMediaElement.duration' in that specification.
Living Standard No change from HTML5
HTML5
The definition of 'HTMLMediaElement.duration' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) 3.5 (1.9.1) [1] 9 ? ?
Feature Android Edge Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) ? (Yes) (Yes)

See also

Document Tags and Contributors

 Contributors to this page: erikadoyle, markg
 Last updated by: erikadoyle,