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
HTML Standard (HTML) # dom-media-duration-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
`duration`	43	12	3.5	9	≤12.1	3.1	43	43	4	≤12.1	3	4.0