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<!--> <!DOCTYPE> <a> <abbr> <acronym> <address> <applet> <area> <article> <aside> <audio> <b> <base> <basefont> <bdi> <bdo> <big> <blockquote> <body> <br> <button> <canvas> <caption> <center> <cite> <code> <col> <colgroup> <command> <datalist> <dd> <del> <details> <dfn> <dialog> <dir> <div> <dl> <dt> <em> <embed> <fieldset> <figcaption> <figure> <font> <footer> <form> <frame> <frameset> <head> <header> <hgroup> <h1> - <h6> <hr> <html> <i> <iframe> <img> <input> <ins> <kbd> <keygen> <label> <legend> <li> <link> <map> <mark> <menu> <meta> <meter> <nav> <noframes> <noscript> <object> <ol> <optgroup> <option> <output> <p> <param> <pre> <progress> <q> <rp> <rt> <ruby> <s> <samp> <script> <section> <select> <small> <source> <span> <strike> <strong> <style> <sub> <summary> <sup> <table> <tbody> <td> <textarea> <tfoot> <th> <thead> <time> <title> <tr> <track> <tt> <u> <ul> <var> <video> <wbr>HTML <track> default Attribute
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>
<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
The default attribute is not supported in any of the major browsers.
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
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