srt-stream

A read/write stream for srt subtitles

Note: This package is written in ES6 and as is, it will only work with nodejs versions 6 and higher.

Install

npm install srt-stream

Usage

Append a line to every subtitle and write to new file

const fs = require('fs')
const srt = require('srt-stream')
const through = require('through2')

fs.createReadStream('subtitle.srt')
  .pipe(srt.read())
  .pipe(through.obj(function (sub, enc, next) {
    sub.body.push('This line is added to every sub.')
    this.push(sub)
    next()
  }))
  .pipe(srt.write())
  .pipe(fs.createWriteStream('subtitle_new.srt'))

By default invalid subs are ignored.

read takes onInvalid (sub) callback in which you can return a sub object and it will get pushed through the stream.

Push invalid subs through

const fs = require('fs')
const srt = require('srt-stream')

fs.createReadStream('subtitle.srt')
  .pipe(srt.read(function onInvalid (sub) { 
    return sub
  }))

Subtitle object example

{
  id: 1,
  startTime: {
    hours: 0,
    minutes: 0,
    seconds: 5,
    ms: 532
  },
  startTime: {
    hours: 0,
    minutes: 0,
    seconds: 9,
    ms: 234
  },
  body: ['first line', 'second line']
}

License

MIT. Copyright (c) Krešimir Klas