archived-youtubeDownloader/Server/index.js

const express = require("express");
const cors = require("cors");
const ytdl = require("ytdl-core");

const app = express();

app.use(cors());

app.listen(4000, () => {
  console.log("Server Works !!! At port 4000");
});

app.get("/downloadmp4", async (req, res, next) => {
  try {
    let URL = req.query.url;
    let title = "video";

    await ytdl.getBasicInfo(URL, { format: "mp4" }, (err, info) => {
      title = info.player_response.videoDetails.title;
    });

    res.header("Content-Disposition", `attachment; filename="${title}.mp4"`);
    ytdl(URL, {
      format: "mp4",
    }).pipe(res);
  } catch (err) {
    console.error(err);
  }
});

app.get("/downloadmp3", async (req, res, next) => {
  try {
    var url = req.query.url;
    let title = "audio";
    await ytdl.getBasicInfo(url, { format: "mp4" }, (err, info) => {
      title = info.player_response.videoDetails.title;
    });

    res.header("Content-Disposition", `attachment; filename="${title}.mp3"`);
    ytdl(url, {
      format: "mp3",
      filter: "audioonly",
    }).pipe(res);
  } catch (err) {
    console.error(err);
  }
});