HTML5 Video duration without playing video

Question

I am trying to get video duration in HTML5 with out playing video or before playing video to show on video thumb as you seen on you tube or any other video sites.

An

Answer 1

For HTML5 you should be able to use the video tag's duration property, once the file's metadata is loaded. See this answer for a good way to do it:

Retrieving HTML5 video duration separately from the file

To quote the anwser by Mikushi:

myVideoPlayer.addEventListener('loadedmetadata', function() {
    console.log(videoPlayer.duration);
});

By listening for the 'loadedmetadata' event you will ensure the duration value has been loaded.

More details on the loadedmetadata can be found here: http://www.w3schools.com/tags/av_event_loadedmetadata.asp

EDIT

As per @lucas-vasques 's comment, instead of the loadmetadata event, you could use durationchange which the MDN Media Events list describes as ...

The metadata has loaded or changed, indicating a change in duration of the media. This is sent, for example, when the media has loaded enough that the duration is known.