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 Standard The definition of 'HTMLMediaElement.duration' in that specification. |
Living Standard | |
| HTML5 The 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 ? |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
See also
- Web media technologies
HTMLMediaElement.currentTime: The current playback position of the media- The
<audio>and<video>elements