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HTML Audio/Video DOM duration Property

❮ HTML Audio/Video DOM Reference


Get the length of the current video:

var vid = document.getElementById("video1");
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Definition and Usage

The duration property returns the length of the current audio/video, in seconds.

If no audio/video is set, NaN (Not-a-Number) is returned.

Note: This property is read-only.

Browser Support

The numbers in the table specify the first browser version that fully supports the property.

duration Yes 9.0 3.5 Yes Yes



Technical Details

Return Value: A Number, representing the length of the video, in seconds. If no video is set, "NaN" (Not-a-Number) is returned. If the video is streamed and has no predefined length, "Inf" (Infinity) is returned.

❮ HTML Audio/Video DOM Reference