@ytdl/ytdl
v1.4.16
Published
A CLI/Library written in typescript/javascript, which allows you to download/play videos from YouTube onto your system.
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ytdl
ytdl provides a library to integrate a Youtube Downloader for Node.js
projects, and a CLI to download content from Youtube. ytdl can also stream audio/video from YouTube, without downloading, directly to your locally installed media player!
Note: You need ffmpeg to be installed on your computer for complete functionality. Without it, you won't be able to some formats/qualities of videos. If ffmpeg is absent, ytdl will prompt you for installation, it is recommended that you install it.
Note: To use the inbuilt mp3 player
ytdl-mp3
on Linux distros,<alsa/asoundlib.h>
header file must be present. The preinstall script logs a warning if it is not present. Ubuntu/Debian users require to install thelibasound2-dev
package (sudo apt-get install libasound2-dev
), if not present already; before installing the library.
Contents
Installation
Library
Via npm
npm install @ytdl/ytdl
CLI
Via npm (recommended)
Note: DO NOT use sudo to install global packages! The correct way to do it is to tell npm where to install it's global packages:
npm config set prefix ~/.local
. Make sure~/.local/bin
is added toPATH
.
npm install @ytdl/ytdl -g
Via curl
- As a single file (from latest Github Release):
# Needs both curl and wget
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ytdl-node/ytdl/master/bin/install-latest)"
- From GitHub repository:
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ytdl-node/ytdl/master/bin/install)"
Via wget
- As a single file (from latest Github Release):
# Needs both curl and wget
sh -c "$(wget -O- https://raw.githubusercontent.com/ytdl-node/ytdl/master/bin/install-latest)"
- From GitHub repository:
sh -c "$(wget -O- https://raw.githubusercontent.com/ytdl-node/ytdl/master/bin/install)"
Via commands
git clone https://github.com/ytdl-node/ytdl.git
cd ytdl
npm install
./bin/ytdl -h
echo
echo "Add $(pwd)/bin to PATH"
API
Example
const ytdl = require('@ytdl/ytdl');
async function videoDownloader() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
await video.download('360p', 'ytdl.mp4');
}
videoDownloader();
OR
// Without using async-await.
const ytdl = require('@ytdl/ytdl');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
video.download('360p', 'ytdl.mp4');
});
Brief
The function ytdl.init(link: string)
or ytdl.default(link: string)
returns a Promise which resolves with an object of type Ytdl
.
A Ytdl
object has the following properties:
- info.videoId: string, stores the video ID.
- info.videoTitle: string, stores the title of the video.
- info.videoTime: string, stores the time of the video.
- info.videoDescription: string, stores the description of the video.
- info.size(quality[, options]): Number, stores the size of the stream in bytes.
- info.all(): Object, returns an object consisting of id, title, time, description.
- download(quality, filename[, options]): Promise<void>, downloads the video/audio from YouTube.
- setLogLevel(level): void, allows you to enable or disable logging depending on the level.
- downloadByItag(itag, filename): Promise<void>, downloads from YouTube using the itag property.
- stream(quality[, options, headers]): Promise<any>, returns a
Node.js
stream.
Any reference to
video
refers to an object returned byytdl.default('link')
.
options: object
- audioOnly: true | false
- videoOnly: true | false
// Example
const options = { audioOnly: true, videoOnly: false };
quality: string
- For audio: low, medium, high, any.
- For video: 144p, 360p, 480p, 720p, 1080p.
// Example
const quality = 'low';
video.download(quality, path[, options])
const ytdl = require('@ytdl/ytdl');
async function videoDownloader() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
await video.download('360p', 'ytdl.mp4');
}
videoDownloader();
OR
// Without using async-await.
const ytdl = require('@ytdl/ytdl');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
video.download('360p', 'ytdl.mp4');
});
- This function first searches for a stream which has both audio and video in it. If it doesn't find it, it will search for a separate audio and video stream and combine it using ffmpeg.
Currently ytdl uses the fluent-ffmpeg package which requires ffmpeg to be installed on the computer.
options:
- audioOnly: true | false
- videoOnly: true | false
audioOnly:
const ytdl = require('@ytdl/ytdl');
async function videoDownloader() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
await video.download('medium', 'audio.mp3', { audioOnly: true });
// quality: 'low', 'medium', 'high', 'any'
}
videoDownloader();
videoOnly:
Note: There will be no sound.
const ytdl = require('@ytdl/ytdl');
async function videoDownloader() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
await video.download('720p', 'video.mp4', { videoOnly: true });
// quality: '144p', '360p', '480p', '720p', '1080p'
}
videoDownloader();
video.downloadByItag(url, itag, path)
const ytdl = require('@ytdl/ytdl');
async function videoDownloader() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
await video.downloadByItag(396, 'ytdl.mp4');
}
videoDownloader();
OR
// Without using async-await.
const ytdl = require('@ytdl/ytdl');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
video.downloadByItag(396, 'ytdl.mp4');
});
video.stream(quality[, options, headers])
- This function returns a Node.js stream.
- This may be piped to
fs.createWriteStream(filename)
to save the stream into a file.
Note: The download function merges separate audio-only and video-only stream when a combined stream is unavailable. This function however will return the appropriate stream if and only if it is available. You may require to pass options, having properties
audioOnly
andvideoOnly
to get the desired stream. E.G.video.stream('480p', { videoOnly: true })
.
const ytdl = require('@ytdl/ytdl');
const fs = require('fs');
async function download() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
const stream = await video.stream('360p');
// The variable stream now holds a Node.js stream.
// Sample use of stream is as follows:
stream
.pipe(fs.createWriteStream('ytdl.mp4'))
.on('finish', (err) => {
if (err) console.log(err);
else console.log('Stream saved successfully.');
});
}
download();
OR
// Without using async-await.
const ytdl = require('@ytdl/ytdl');
const fs = require('fs');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
video.stream('360p').then((stream) => {
// The variable stream now holds a Node.js stream.
// Sample use of stream is as follows:
stream
.pipe(fs.createWriteStream('ytdl.mp4'))
.on('finish', (err) => {
if (err) console.log(err);
else console.log('Stream saved successfully.');
});
});
});
video.streamByItag(itag[, headers])
- Same functionality as
video.stream(quality)
, usesitag
instead ofquality
.
const ytdl = require('@ytdl/ytdl');
const fs = require('fs');
async function download() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
const stream = await video.stream(18);
// The variable stream now holds a Node.js stream.
// Sample use of stream is as follows:
stream
.pipe(fs.createWriteStream('ytdl.mp4'))
.on('finish', (err) => {
if (err) console.log(err);
else console.log('Stream saved successfully.');
});
}
download();
OR
// Without using async-await.
const ytdl = require('@ytdl/ytdl');
const fs = require('fs');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
video.streamByItag(18).then((stream) => {
// The variable stream now holds a Node.js stream.
// Sample use of stream is as follows:
stream
.pipe(fs.createWriteStream('ytdl.mp4'))
.on('finish', (err) => {
if (err) console.log(err);
else console.log('Stream saved successfully.');
});
});
});
video.play(quality[, options, player])
- Play audio or video from YouTube in your local media player.
quality
may be anitag
or among the ones mentioned here.- Options are of this format. This is ignored if parameter
quality
is anitag
. - The function returns a
Player
object, with attributesplayer
andplay(url, stream)
.
Audio
- By default, audio is played on a cross-platform player integrated with ytdl.
- However, if the parameter
player
is passed, it is played on the specified media player.
Video
cvlc
is the default video player.- Allowed media players are:
cvlc
,vlc
,mplayer
,afplay
,mpg123
,mpg321
,play
,omxplayer
,aplay
,cmdmp3
.
The media player set must be on your PATH or in your Environment Variables. On UNIX based systems, you can check if your media player is on your PATH by using the which command, e.g.
which mplayer
.
const ytdl = require('@ytdl/ytdl');
async function play() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
video.play('any', { audioOnly: true });
// Play audio of any quality on ytdl-mp3 player.
}
play();
OR
const ytdl = require('@ytdl/ytdl');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
video.play('any', { audioOnly: true });
// Play audio of any quality on ytdl-mp3 player.
});
- The
Player
object returned can be used to log the name of the player being used. - In this example,
mplayer
is being used.
async function playLocal() {
const video = await ytdl.init('https://www.youtube.com/watch?v=A7ry4cx6HfY');
const player = await video.play('any', { audioOnly: true }, 'mplayer');
console.log(`Player: ${player.player}`);
// Logs the player on which media is being played.
}
playLocal();
OR
ytdl.init('https://www.youtube.com/watch?v=A7ry4cx6HfY').then((video) => {
video.play('any', { audioOnly: true }, 'mplayer').then((player) => {
console.log(`Player: ${player.player}`);
// Logs the player on which media is being played.
});
});
video.setLogLevel(level)
level
can be one of the following:- error
- warn
- info
- http
- verbose
- debug
- silly
- A level lower in the list also enables the levels before it.
- E.G., a log level of debug will also enable
verbose, http, info, warn, error
.
const ytdl = require('@ytdl/ytdl');
async function videoDownloader() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
// This line will enable logging info to console while downloading content.
video.setLogLevel('info');
await video.downloadByItag(396, 'ytdl.mp4');
}
videoDownloader();
video.info.size(quality|itag[, options])
- Returns size in bytes.
- A number is treated as an
itag
whereas a string is treated asquality
. - Options may be passed only with
quality
, else it will be ignored.
const ytdl = require('@ytdl/ytdl');
async function videoSize() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
const size = video.info.size('360p'); // can pass options: { audioOnly: boolean, videoOnly: boolean }
const sizeItag = video.info.size(396);
console.log(`Video Size for 360p: ${Math.round(size/(1024*1024))}M`);
console.log(`Video Size for itag = 396: ${Math.round(sizeItag/(1024*1024))}M`);
}
videoSize();
OR
const ytdl = require('@ytdl/ytdl');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
const size = video.info.size('360p'); // can pass options: { audioOnly: boolean, videoOnly: boolean}
const sizeItag = video.info.size(396);
console.log(`Video Size for 360p: ${Math.round(size/(1024*1024))}M`);
console.log(`Video Size for itag = 396: ${Math.round(sizeItag/(1024*1024))}M`);
});
video.info.all()
const ytdl = require('@ytdl/ytdl');
async function videoInfo() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
const { id, title, time, description } = video.info.all();
console.log(`Video Title: ${title}`);
}
videoInfo();
OR
// Without using async-await.
const ytdl = require('@ytdl/ytdl');
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
const { id, title, time, description } = video.info.all();
console.log(`Video Title: ${title}`);
});
video.info.fetchFormatData(quality[, options])
- Returns an object:
{ url: string, fmt: object }
. url
holds the download URL for the video.fmt
holds other data about the format such ascontentLength
,fps
,mimeType
, etc.- options are same as in video.download.
const ytdl = require('@ytdl/ytdl');
async function getData() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
const { url, fmt } = video.info.fetchFormatData('360p');
console.log(`Download url: ${url}`);
console.log(`Format data: ${fmt}`);
}
getData();
OR
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
const { url, fmt } = video.info.fetchFormatData('360p');
console.log(`Download url: ${url}`);
console.log(`Format data: ${fmt}`);
});
video.info.fetchFormatDataByItag(itag)
- Same as
video.info.fetchFormatData(quality)
; except, it fetches data by itag instead of quality.
const ytdl = require('@ytdl/ytdl');
async function getData() {
const video = await ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ');
const { url, fmt } = video.info.fetchFormatDataByItag(18);
console.log(`Download url: ${url}`);
console.log(`Format data: ${fmt}`);
}
getData();
OR
ytdl.init('https://www.youtube.com/watch?v=fJ9rUzIMcZQ').then((video) => {
const { url, fmt } = video.info.fetchFormatDataByItag(18);
console.log(`Download url: ${url}`);
console.log(`Format data: ${fmt}`);
});
ytdl.fromName(name)
- Create a
Ytdl
object using the searched name.
const ytdl = require('..');
async function play() {
const video = await ytdl.fromName('Another Day');
video.play('any');
}
play();
OR
const ytdl = require('..');
ytdl.fromName('Another Day').then((video) => {
video.play('any');
});
ytdl.cli()
- This will create a CLI for YTDL.
- You can run this by passing arguments.
node file.js -h
ORnpm start -h
const ytdl = require('@ytdl/ytdl');
ytdl.cli(process.argv);
CLI (ytdl)
Examples
- Download only audio of any quality from "https://www.youtube.com/watch?v=fJ9rUzIMcZQ".
ytdl -d -l "https://www.youtube.com/watch?v=fJ9rUzIMcZQ" -fn "rhapsody.mp3" -ao
- Play "https://www.youtube.com/watch?v=fJ9rUzIMcZQ", 360p, in your local media player.
ytdl -p -l "https://www.youtube.com/watch?v=fJ9rUzIMcZQ" -q "360p" --set-player "mplayer"
# Add -ao to play only audio from your command line.
- Play "Another Day" from YouTube on your local media player.
ytdl -p -n "Another Day" -ao
# Searches "Another Day" on YouTube and plays the first result.
Usage
Usage: ytdl [options]
Options:
-V, --version output the version number
-l, --link <url> set the url for the YouTube video
-n, --name <name> search by name instead of link
-i, --info info about YouTube link
-d, --download download from YouTube link
-p, --play play YouTube media in your media player
--set-player <media-player> set the media player
-fn, --filename <filename> filename of downloaded content
-q, --quality <quality> quality of downloaded content
-s, --size get the size of the video to be downloaded
-ao, --audio-only download only audio stream
-vo, --video-only download only video stream
-h, --help display help for command
Contributing
Contributing guidelines have been established here.