A JavaScript implementation of the WebVTT specification

Accessible HTML5 Video Player

Convert WebVTT files to SubRip SRT

Encoding-aware .srt (SubRip Text) to .vtt (WebVTT) converter.

Transform stream that converts srt files to vtt files (html5 video subtitles)

Very basic Node.js/JavaScript library to generate VTT open subtitles files

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

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

Closed captioning sample app

Builder for captions and subtitles in WebVTT format