subtitle.js

Parse and manipulate SRT (SubRip) format.

Installation

npm install subtitle --save

Usage

var Subtitle = require('subtitle');

var captions = new Subtitle();

captions.parse('your srt here');

console.log(captions.getSubtitles());

It's gonna return an array like this:

[
  {
    index: 1,
    start: '00:00:20,000',
    end: '00:00:24,400',
    text: 'Bla Bla Bla Bla'
  },
  {
    index: 2,
    start: '00:00:24,600',
    end: '00:00:27,800',
    text: 'Bla Bla Bla Bla'
  }
]

You can also pass options to the getSubtitles() method.

captions.getSubtitles({
  duration: true, // Include the `duration` property
  timeFormat: 'ms' // Set time format to milliseconds
});

Here's the result:

[
  {
    index: 1,
    start: 20000,
    end: 24400,
    duration: 4400,
    text: 'Bla Bla Bla Bla'
  },
  {
    index: 2,
    start: 24600,
    end: 27800,
    duration: 3200,
    text: 'Bla Bla Bla Bla'
  }
]

You can also add new captions.

var captions = new Subtitle();

captions.add({
  start: '00:00:20,000',
  end: '00:00:21,900',
  text: 'Text here'
});

// You can use time in MS if you prefer
captions.add({
  start: 22000,
  end: 22580,
  text: 'Another text here...'
});

And what about resync your captions?

// Advance 1s
captions.resync(1000);

// Delay 500ms
captions.resync(-500);

Then, you can stringfy your changes:

captions.stringfy(); // Returns a valid SRT

Tests

npm test

Roadmap

• [x] Basic SRT parser
• [x] Basic manipulation
• [x] Stringfy
• [x] Time conversion
• [x] Duration property
• [ ] WebVTT support
• [ ] Browser support (including for Browserify)
• [ ] Better docs