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HTML <track> default Attribute

HTML track Tag Reference HTML <track> tag

Example

A video with two subtitle tracks. "English" subtitle is the default:

<video width="320" height="240" controls>
  <source src="forrest_gump.mp4" type="video/mp4">
  <source src="forrest_gump.ogg" type="video/ogg">
  <track src="subtitles_en.vtt" kind="subtitles" srclang="en" label="English" default>
  <track src="subtitles_no.vtt" kind="subtitles" srclang="no" label="Norwegian">
</video>

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The default attribute is supported in Internet Explorer 10, Opera, and Chrome.


Definition and Usage

The default attribute is a boolean attribute.

When present, it specifies that the track is to be enabled if the user's preferences do not indicate that another track would be more appropriate.

Note: There must not be more than one track element with a default attribute per media element.


Differences Between HTML 4.01 and HTML5

The <track> tag is new in HTML5.


Differences Between HTML and XHTML

In XHTML, attribute minimization is forbidden, and the default attribute must be defined as <track default="default" />.


Syntax

<track src="subtitles_en.vtt" default>


HTML track Tag Reference HTML <track> tag

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