Components

HTML5 polyfill for closed captioning with the
element, and implements the WHATWG Timed Text Track specification.

Separate YouTube VTT subtitles with timeline ASS subtitle file

lachesis automates the segmentation of a transcript into closed captions

A simple carousel with a focus on clean, accessible markup

A parser and serializer to make it easier to manipulate .vtt files.

Converts elex data (to vtt or plain text) to be integrated into live video HTML5 text track, with video js or similar for live streaming, for instance with video js captions plugin for roll-on mode

Golang library to convert SRT subtitle into WebVTT

teletext closed captioning decoder (produces subtitles in SRT format from transport stream)

Control by Sign language

Closed captioning sample app

Builder for captions and subtitles in WebVTT format