HTMLMediaElement.duration

The HTMLMediaElement.duration property gives the length of the media in seconds. If no media data is available, the value NaN is returned. If the media is not known to be bound (for example, live streaming), then the value Infinity is returned.

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

Browser compatibility

See also

• The interface defining it, HTMLMediaElement.