Timed Divs HTML
This page specifies a subclass of HTML documents that is a time-aligned text format for audio-visual content. We call the format "timed divs within HTML" or TDHT. It is intended to be used only in a World Wide Web context i.e. everywhere that Web browser functionality is available. Use cases for the format are subtitles, captions, annotations and other time aligned text as listed at http://wiki.xiph.org/index.php/OggText#Categories_of_Text_Codecs .
Files in this format continue to be text/html mime types [or would it be better to create a new one?].
Files in this format should have a file extension of .tdht .