The default attribute on a <track> tag sets that track as default.
The audio or video player uses that track if no other preferences are specified.
A default attribute on a <track> element.
The video has 2 subtitle tracks with the first one as default.
<video controls="controls" width="320" height="176">
<source src="/media/godfather.mp4" type="video/mp4" />
<source src="/media/godfather.ogg" type="video/ogg" />
<track src="/media/godfather-en.srt" kind="subtitles" srclang="en" label="English" default />
<track src="/media/godfather-es.srt" kind="subtitles" srclang="es" label="Spanish" />
</video>
The default attribute identifies the track as default.
This default track is used if no other track preference are specified.
For each media player, only one track can be the default.
<track src="URL" default>
Here is when default support started for each browser:
 Chrome
|
23.0 | Nov 2012 |
 Firefox
|
31.0 | Jul 2014 |
 IE/Edge
|
10.0 | Sep 2012 |
 Opera
|
12.1 | Nov 2012 |
 Safari
|
6.0 | Jul 2012 |
Back to <track>
