default default\n\nThis attribute indicates that the track should be enabled unless the user's preferences indicate that another track is more appropriate. This may only be used on one track element per media element.
kind kind\n\nHow the text track is meant to be used. If omitted the default kind is subtitles.
label label\n\nA user-readable title of the text track which is used by the browser when listing available text tracks.
src src\n\nAddress of the track. Must be a valid URL. This attribute must be defined.
srclang srclang\n\nLanguage of the track text data. It must be a valid BCP 47 language tag. If the kind attribute is set to subtitles, then srclang must be defined.