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HTML | <track> default Attribute
  • Last Updated : 28 Jun, 2019

The HTML <track> default Attribute is a Boolean attribute. This attribute is used to specify that the track will be enabled if the user’s preferences do not indicate that another track would be more appropriate.

Note: With a default attribute, there must not be more than one track element per media element.


<track src="subtitles_en.vtt" default>

Below Example illustrates the use of default attribute in <track> element.

        body {
            text-align: center;
        h1 {
            color: green;
    HTML <track>default Attribute 
    <video width="100" 
        <track src=
            <source id="myTrack" 


Supported Browsers: The browsers supported by HTML <track> default Attribute are listed below:

  • Google Chrome 18.0
  • Internet Explorer 10.0
  • Firefox 31.0
  • Apple Safari 6.0
  • Opera 15.0


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