node-ytdl-core-mp4-pipe-streaming-server

index.ts

import ytdl from "ytdl-core";
import express from "express";

const app = express()

app.get("/stream", async (req, res, next) => {
  const url = req.query.url
  const quality = req.query.quality;
  if (!url || typeof url != "string") return next();
  if (!quality || typeof quality != "string") return next();
  const info = await ytdl.getInfo(url);
  const videoFormat = ytdl.chooseFormat(info.formats, { quality: String(quality) })
  res.contentType("video/mp4")
  res.attachment(`${info.videoDetails.title}.mp4`)
  ytdl(url, {quality, format: videoFormat}).pipe(res);
});

app.listen(process.env.PORT || 3000);