HTML Audio/Video DOM duration Property
❮ HTML Audio/Video DOM Reference
Example
Get the length of the current video:
let vid = document.getElementById("video1");
alert(vid.duration);
Try it Yourself »
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.
| Property | |||||
|---|---|---|---|---|---|
| duration | Yes | 9.0 | 3.5 | Yes | Yes |
Syntax
audio|video.duration
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
