Social Video Downloader YouTube · Instagram · Facebook · X — video, MP3 song, photo, aur jahan platform deta hai wahan title, description, tags bhi.

Ek folder mein docker-compose.yml banao (API_URL hi sirf zaroori hai):

services:
  cobalt:
    image: ghcr.io/imputnet/cobalt:11
    environment:
      - API_URL=https://api.tumhara-domain.com/
      - CORS_WILDCARD=1
    ports:
      - "9000:9000"
    restart: unless-stopped

Phir docker compose up -d. Public instance ko Turnstile ya API key se protect karo, warna log usey bulk downloading mein use karenge. Source: github.com/imputnet/cobalt — docs/run-an-instance.md

Browser seedha doosri site ki API ko hamesha nahi bula sakta (CORS), aur API key page mein daalna galat hai. Isliye Pages Function / Worker beech mein rehta hai — page sirf apne hi /api/download ko bulata hai:

// functions/api/download.js  (Pages Functions)
export async function onRequestPost({ request, env }) {
  const { url, downloadMode, videoQuality,
          audioFormat, audioBitrate, filenameStyle } = await request.json();
  const r = await fetch(env.COBALT_URL + "/", {
    method: "POST",
    headers: { "Accept": "application/json",
               "Content-Type": "application/json",
               ...(env.COBALT_KEY ? { "Authorization": "Api-Key " + env.COBALT_KEY } : {}) },
    body: JSON.stringify({ url, downloadMode, videoQuality,
                           audioFormat, audioBitrate, filenameStyle })
  });
  const data = await r.text();
  return new Response(data, { headers: {
    "Content-Type": "application/json",
    "Access-Control-Allow-Origin": "https://tumhari-site.pages.dev" }});
}

COBALT_URL aur key ko Cloudflare dashboard → Settings → Variables/Secrets mein rakho — kabhi page ke code mein nahi. Phir is page ke JS mein instance list ki pehli entry apna /api/download kar do — bas, setup pakka.

Dashboard → Workers & Pages → Create → Pages → Git connect karo (build command: static site ke liye exit 0, output: .) — ya Direct Upload / npx wrangler pages deploy. Note: Cloudflare 2026 mein naye projects ke liye Workers Static Assets recommend karta hai; Pages bhi supported rahega. Free limits: static requests + bandwidth unlimited, 500 builds/month.

yt-dlp browser ya Cloudflare mein nahi chal sakta (Python + ffmpeg chahiye), lekin Termux/PC par ye sabse powerful hai — title, description, tags, duration, views, sab milta hai:

# sirf details (JSON):
yt-dlp -J "LINK"
# video 1080p tak:
yt-dlp -f "bestvideo[height<=1080]+bestaudio/best" "LINK"
# sirf MP3 (best quality):
yt-dlp -x --audio-format mp3 --audio-quality 0 "LINK"

Version used in research: yt-dlp stable 2026.10.26, Python 3.11+. YouTube aksar cheezein badalta hai — yt-dlp -U se update karte raho.