tiny-youtube-downloader

const {extractMediaInfoFromUrl, download, extractUrlsFromList, app, captionToSubtitle} = require('tiny-youtube-downloader');

//*
(async () => {
let options = {
uris : [],
outputDir : '.',
subtitles : { captions: ['zh-Hant','en-US'], subtitleType: 'srt', downThemAll: true },
willSubtitle : false,
willVideo : false,
preferQuality : { itag: 18, qualityLabel: '360p' },
randomWait : { min: 12000, max: 120000 }, // slow down your batch downloads. otherwise it's easy get "403" error
resumeRemainningUris : true,
maxFailture : 3,
// "User-Agent" 由於含 "-" 號，不符合變量的定義，所以要用引號括起來。用於模擬瀏覽器的請求的 HTTP HEADER
commonHeaders : {'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:72.0) Gecko/20100101 Firefox/72.0'}, //add "agent" here
httpMethods : { httpGetBody: null, httpGetRaw: null, httpGetStream: null } //set your http methods here.
}

let testUrls = [
'https://www.youtube.com/watch?v=hET2MS1tIjA',
'https://www.youtube.com/playlist?list=PL2aBZuCeDwlRsa9T49dlm6vlZLfn1fSZ7'
];

options.uris.push(...testUrls);
options.outputDir = 'out';
options.willSubtitle = true;
options.willVideo = false;
options.preferQuality.itag = 18;
options.preferQuality.qualityLabel = '360p';
options.subtitles.captions.push(...['en']);
//e.g. build your ProxyFactory and setting here.
//options = Object.assign(options, {agent: await ProxyFactory.getProxy()});
//options.agent = await ProxyFactory.getProxy();
/*
//how to wrap async function calls into a sync function?
//it may do as a top-level async call: (async() => {})();
options.agent = () => {
(async() => {
let retObj = await ProxyFactory.getProxy();
return retObj;
})();
}
//*/
await app(options);