Download Youtube mp3

download_youtube_mp3.ts

import ytdl from "ytdl-core";
import fs from "fs";
import ffmpeg from "fluent-ffmpeg";
import readline from "readline";

// https://github.com/fent/node-ytdl-core/blob/master/example/convert_to_mp3.js

const id = 'nMfPqeZjc2c';

let stream = ytdl(id, {
    quality: 'highestaudio',
  });

  let start = Date.now();
  ffmpeg(stream)
    .audioBitrate(128)
    .save(`${__dirname}/${id}.mp3`)
    .on('progress', (p:any) => {
      readline.cursorTo(process.stdout, 0);
      process.stdout.write(`${p.targetSize}kb downloaded`);
    })
    .on('end', () => {
      console.log(`\ndone, thanks - ${(Date.now() - start) / 1000}s`);
    });