T.3 Timed Data

The Multi-device Timing Community Group aims to facilitate precise playback and control of timed data, i.e. timed subtitles, timed cues, timed events, timed triggers etc.

A section of the timing object draft specification is concerned with sequencing of timed data.

http://webtiming.github.io/timingobject/#timed-data-and-the-timing-object

This proposes the introduction of a new TimedTextTrack as an extension of the existing TextTrack concept. Crucially, the TimedTextTrack is directed by a TimingObject instead of a HTMLMediaElement.

In addition, the Multi-device Timing Community Group makes available an open-source JavaScript implementation of a generic Sequencer for timed data, integrated with TimingObject. The Sequencer is similar, but not identical to the proposed TimedTextTrack in function and API.

http://webtiming.github.io/timingsrc/

A more detailed introduction to sequencing of timed data is available here

http://webtiming.github.io/timingsrc/doc/index.html#sequencing