HTML <track> tag

HTML <track> tag is used to define time-based text tracks for a media file. The <track> tag must use as child element of <audio> and <video> elements.

The <track> tag is used to add subtitle, caption, or any other form of text which displayed when a media file plays.

HTML <track> is new tag in HTML5.

Syntax

Following are some specifications about the HTML <track> tag

Display	None
Start tag/End tag	Only start tag(End tag forbidden)
Usage	HTML media

Example

 <!DOCTYPE html>
<html>
<head>
<title>HTML track Tag</title>
</head>
<body>
 <h2>Example of track tag</h2>
 <video controls="controls">
     <source src="flower.mp4" type="video/mp4">
    <track src="flower.vtt" kind="subtitles" srclang="en" label="English">
    Sorry!Your browser does not support the track
 </video>
</body>
</html>

Test it Now

In the above example, we have used flower.vtt file to add subtitle in the video file. Following is the flower.vtt file:

How to create WEBVTT file:

Following are some basic steps to create WEBVTT file for <track> tag:

Open text editor in your PC such as Notepad
Write WEBVTT as the first line in the editor
Leave a blank line
Specify the time duration in the proper format (you can also provide numbering and add CSS).
Enter and write your text which you want to add a subtitle or caption, and repeat step 3 to 5 until you finish it.
Save it using .vtt extension.

Now your WEBVTT file is ready to use.

Attribute:

Tag-specific attributes:

Attribute	Value	Description
default	default	It specifies that the track should be enabled unless the user?s preferences indicate that another track is more important.
kind	captions chapters descriptions metadata subtitles	It specifies that which type of text track you want to add.
label	text	It specifies the title of the text track.
src	URL	It defines the URL of the track file.
srclang	language_code	It defines the language of the track text content, such as English, Germany, etc.