rtx-md-video-doenloder/index.js

A simple video downloader for YouTube and Facebook

const ytdl = require("ytdl-core");
const fs = require("fs");
const fetch = require("node-fetch");

// YouTube Video Downloader
async function downloadYouTubeVideo(url, outputPath) {
    if (!ytdl.validateURL(url)) {
        throw new Error("Invalid YouTube URL");
    }
    
    const info = await ytdl.getInfo(url);
    const videoTitle = info.videoDetails.title.replace(/[^\w\s]/gi, '');

    const output = `${outputPath || videoTitle}.mp4`;

    ytdl(url, { quality: 'highest' })
        .pipe(fs.createWriteStream(output))
        .on('finish', () => console.log(`YouTube Video Downloaded: ${output}`))
        .on('error', (err) => console.error("Download Error:", err));
}

// Facebook Video Downloader (Public videos only)
async function downloadFacebookVideo(url, outputPath) {
    try {
        const res = await fetch(url);
        const data = await res.text();

        const match = data.match(/"hd_src":"(.*?)"/) || data.match(/"sd_src":"(.*?)"/);
        if (!match) throw new Error("Video URL not found!");

        const videoURL = match[1].replace(/\\/g, "");
        const response = await fetch(videoURL);
        const buffer = await response.buffer();

        const output = outputPath || "facebook-video.mp4";
        fs.writeFileSync(output, buffer);

        console.log(`Facebook Video Downloaded: ${output}`);
    } catch (error) {
        console.error("Facebook Download Error:", error.message);
    }
}

// Export functions for npm package
module.exports = {
    downloadYouTubeVideo,
    downloadFacebookVideo
};