Transform stream that converts srt files to vtt files. vtt files are used to provide subtitles in html5 video
npm install srt-to-vtt
var srt2vtt = require('srt-to-vtt')
var fs = require('fs')
fs.createReadStream('some-subtitle-file.srt')
.pipe(srt2vtt())
.pipe(fs.createWriteStream('some-html5-video-subtitle.vtt'))
There is also a command line tool available
npm install -g srt-to-vtt
srt-to-vtt --help
MIT