Youtube Subtitles Downloader

Node library for download subtitles from Youtube and translate them or convert to SRT. Also available as CLI. Partially used with the Youtube Subtitles Viewer Chrome extension

Install

npm install youtube-subtitles-downloader

install global for use the CLI

npm install -g youtube-subtitles-downloader

Usage example

const id = YTSubtitles.extractIdFromUrl('https://www.youtube.com/watch?v=vG-QZOTc5_Q')

YTSubtitles.getLanguagesList(id).then((resp) => {
  resp[0].fetch().then(lang => {
    console.log(lang)
    // do something else with subtitles
  })
})

using the CLI

$ ytsub uICEJnBuhy0 -l en
$ ytsub uICEJnBuhy0 -s
$ ytsub uICEJnBuhy0 -l en -s -o sub.srt
$ ytsub uICEJnBuhy0 -t el
$ ytsub list uICEJnBuhy0
$ ytsub list-translations uICEJnBuhy0

YTSubtitles

async YTSubtitles.getSubtitles(videoID, languageCode)

Download the subtitles of the video using the optional language code

Params

• videoID: YouTube video ID
• languageCode (optional): language code of the subtitles to return

Return

Array with the fetched subtitles content

async YTSubtitles.getLanguagesList(videoID)

Get the languages list for the video

Params

• videoID: YouTube video ID

Return

An array of subtitles objects (YTSub)

YTSubtitles.extractIdFromUrl(url)

Extract the video ID

Params

• url: YouTube video URL

Return

String video ID

YTSub

async fetch()

Download the subtitles of the video

Return

Array with the fetched subtitles content

async fetchSRT()

Download the subtitles of the video in SRT format

Return

Array with the fetched subtitles content in SRT format

async translate(languageCode)

Translate the subtitle into another language returning a new YTSub object

Params

• languageCode: Language code for translation

Return

A new YTSub object constructed with the new language

Properties

translationLanguages

List of languages object available for translate the subtitles

languageCode, languageName, languageId

Code, name and vvsId of the subtitles retrieved from YouTube

isTranslatable

Is current language is translatable

CLI

Usage: ytsub [options] [command] <video-id>

Download YouTube video subtitles using the video id

Options:
  -V, --version                    output the version number
  -l, --language <language-code>   Set subtitles language
  -t, --translate <language-code>  Translate subtitles in another language
  -s, --srt                        Output in SRT format
  -o, --output <path>              Output file
  -h, --help                       display help for command

Commands:
  list <video-id>                  Get the list of available languages with codes and names
  list-translations <video-id>     Get the list of available languages for translation

Examples:
  $ ytsub uICEJnBuhy0 -l en
  $ ytsub uICEJnBuhy0 -s
  $ ytsub uICEJnBuhy0 -l en -s -o sub.srt
  $ ytsub uICEJnBuhy0 -t el
  $ ytsub list uICEJnBuhy0
  $ ytsub list-translations uICEJnBuhy0

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