Youtube-mp3-downloader Npm 〈TRENDING ✰〉

const YouTubeMp3Downloader = require("youtube-mp3-downloader");
// Configure downloader
const YD = new YouTubeMp3Downloader(
ffmpegPath: "/usr/bin/ffmpeg",        // Path to ffmpeg
outputPath: "./downloads",            // Where to save MP3s
youtubeVideoQuality: "highestaudio", // highestaudio, lowestaudio
queueParallelism: 2,                 // parallel downloads
progressTimeout: 2000                // progress event interval (ms)
);
// Download video by ID (extract from YouTube URL)
const videoId = "dQw4w9WgXcQ"; // example
YD.download(videoId, $videoId.mp3);
YD.on("finished", (err, data) => 
console.log(✅ Downloaded: $data.file);
);
YD.on("error", (error) => 
console.error("❌ Error:", error);
);
YD.on("progress", (progress) => 
console.log($progress.progress.percentage% downloaded);
);

const videoId = 'VIDEO_ID_HERE'; // e.g., 'dQw4w9WgXcQ'
YD.download(videoId, $videoId.mp3);
// Progress events
YD.on('progress', (data) => 
console.log($data.progress.percentage% downloaded);
);
// When finished
YD.on('finished', (err, data) => 
console.log(Downloaded: $data.file);
);
// Handle errors
YD.on('error', (error) => 
console.error('Download error:', error);
);

Extract audio clips from YouTube lessons and generate MP3s for spaced repetition.

Install youtube-mp3-downloader via npm:

npm install youtube-mp3-downloader

You may also want to install ytdl-core and ffmpeg-static for additional control: youtube-mp3-downloader npm

npm install ytdl-core ffmpeg-static

Crucially, this package requires FFmpeg to be installed on the host system. It is not a pure JavaScript solution. If FFmpeg is not in the system path, the package will fail to execute.

Create a file download.js:

const YouTubeMp3Downloader = require("youtube-mp3-downloader");
const readline = require("readline");
const rl = readline.createInterface(
input: process.stdin,
output: process.stdout
);
rl.question("YouTube URL: ", (url) => 
const videoId = extractId(url);
if (!videoId) 
console.log("Invalid URL");
process.exit(1);

const downloader = new YouTubeMp3Downloader(
ffmpegPath: require("ffmpeg-static")?.path );
downloader.download(videoId, $videoId.mp3);
downloader.on("progress", (p) => 
process.stdout.write(\r⏳ $p.progress.percentage.toFixed(1)%);
); const videoId = 'VIDEO_ID_HERE'; // e
downloader.on("finished", () => 
console.log("\n✅ Done!");
process.exit();
);
downloader.on("error", (e) => 
console.error("\n❌", e);
process.exit(1);
);
);
function extractId(url) /\d/

Run it:

node download.js

Let’s elevate this from a script to a web service. We’ll create an API endpoint that accepts a YouTube URL and returns the MP3.

downloader.on('error', (err) => 
  switch(err.code) 
    case 'FFMPEG_NOT_FOUND':
      console.log('ffmpeg not installed!');
      break;
    case 'VIDEO_NOT_FOUND':
      console.log('Video unavailable or private');
      break;
    default:
      console.log('Unknown error:', err);
);