http://localhost:3000/download?url=https://www.youtube.com/watch?v=VIDEO_ID

npm install ytdl-core@latest

const express = require("express");

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

const app = express();

const PORT = 3000;

app.get("/download", async (req, res) => {

    try {

        const videoUrl = req.query.url;

        if (!videoUrl) {

            return res.status(400).json({ error: "Missing 'url' parameter" });

        }

        if (!ytdl.validateURL(videoUrl)) {

            return res.status(400).json({ error: "Invalid YouTube URL" });

        }

        const info = await ytdl.getInfo(videoUrl);

        const format = ytdl.chooseFormat(info.formats, { quality: "highest" });

        if (!format) {

            return res.status(500).json({ error: "No downloadable format found" });

        }

        res.json({

            title: info.videoDetails.title,

            download_link: format.url,

            format: format.mimeType,

            quality: format.qualityLabel

        });

    } catch (error) {

        console.error("Error retrieving video:", error);

        res.status(500).json({ error: "Error retrieving video information", details: error.message });

    }

});

app.listen(PORT, () => {

    console.log(`Server is running on http://localhost:${PORT}`);

});