Invalid <track kind> will be treated as metadata instead of subtitles

Published: | Categories: Audio & Video


Previously, invalid values specified for the kind attribute on the <track> element were treated as subtitles, the default value. In order to introduce new kinds in the future without breaking the backward compatibility, any invalid values now behave like metadata that won’t accidentally visible to the user. According to Opera’s research, only 0.001% of pages will be affected of this change.