Download videos from youtube in node.js using youtube-dl.
I also made a pure Javascript youtube downloading module. The reason I'm maintaining this one is because it supports a lot more video sites besides youtube. But if you're only interested in downloading from youtube, you should consider using the better module. It's better in that it doesn't have to spawn a child process, so it uses less memory and it's faster. And you get direct access to the download stream, meaning you can pipe it or pause it or whatever with it.
var youtubedl = require('youtube-dl');
var dl = youtubedl.download('http://www.youtube.com/watch?v=90AiXO1pAiA',
'./videos',
// optional arguments passed to youtube-dl
['--max-quality=18']);
// will be called when the download starts
dl.on('download', function(data) {
console.log('Download started');
console.log('filename: ' + data.filename);
console.log('size: ' + data.size);
});
// will be called during download progress of a video
dl.on('progress', function(data) {
process.stdout.write(data.eta + ' ' + data.percent + '% at ' + data.speed + '\r');
});
// catches any errors
dl.on('error', function(err) {
throw err;
});
// called when youtube-dl finishes
dl.on('end', function(data) {
console.log('\nDownload finished!');
console.log('Filename: ' + data.filename);
console.log('Size: ' + data.size);
console.log('Time Taken: ' + data.timeTaken);
console.log('Time Taken in ms: ' + data.timeTakenms);
console.log('Average Speed: ' + data.averageSpeed);
console.log('Average Speed in Bytes: ' + data.averageSpeedBytes);
});This example can be found in the example folder, and will produce an output that looks like the following when ran.
Download started
Video size: 918.31k
00:00 100.0% at 206.12k/s
Download finished!
Filename: 90AiXO1pAiA.mp4
Size: 918.31k
Time Taken: 7 seconds, 27 ms
Time Taken in ms: 7027
Average Speed: 333.74KB/s
Average Speed in Bytes: 341750.78
var youtubedl = require('youtube-dl');
youtubedl.info('http://www.youtube.com/watch?v=WKsjaOqDXgg',
// called when video page is downloaded and info extracted
function(err, info) {
if (err)
throw err;
console.log('title: ' + info.title);
console.log('url: ' + info.url);
console.log('thumbnail: ' + info.thumbnail);
console.log('description: ' + info.description);
console.log('filename: ' + info.filename);
}
// optional arguments passed to youtube-dl
// ['--username=user', '--password=hunter2']
);Running that will produce something like
title: Ace Rimmer to the Rescue
url: http://v2.lscache2.c.youtube.com/videoplayback?sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor%2Coc%3AU0hPSFFQVF9FSkNOOV9JSlhJ&fexp=904410%2C907048%2C910100&algorithm=throttle-factor&itag=34&ipbits=0&burst=40&sver=3&signature=4093330AC1A5B0CAF8709A0416A4B593A75BB892.21F2F12C418003492D9877E1570DC7AEE6DBEEBA&expire=1303156800&key=yt1&ip=0.0.0.0&factor=1.25&id=58ab2368ea835e08
thumbnail: http://i4.ytimg.com/vi/WKsjaOqDXgg/default.jpg
description: An old Red Dwarf eposide where Ace Rimmer saves the Princess Bonjella.
filename: WKsjaOqDXgg.webm
For more usage info on youtube-dl and the arguments you can pass to it, do youtube-dl -h or go to the youtube-dl documentation.
npm install youtube-dl
Use the -g option if you want npm to add a symlink to youtube-dl so it can be used in command line.
Tests are written with vows
npm testI haven't tested this with playlists yet because I haven't needed to use them. But my guess is they probably work with the download function but not the info function.
MIT