Downloading Facebook videos may violate Facebook’s Terms of Service (Section 3.2: "You will not... collect users' content or information... using automated means"). This paper is for educational purposes only . Always obtain permission from content owners.
yt-dlp is a command-line tool that frequently updates to bypass Facebook's changing video URL structures. Steps to Use yt-dlp : script download facebook video
import os import re import sys import requests def download_facebook_video(url, output_path="video.mp4"): headers = "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" print("[*] Fetching video page source...") try: response = requests.get(url, headers=headers, timeout=10) response.raise_for_status() except requests.exceptions.RequestException as e: print(f"[-] Error fetching URL: e") return False html = response.text # Search for HD or SD video source links in the page source hd_match = re.search(r'browser_native_hd_url":"([^"]+)"', html) sd_match = re.search(r'browser_native_sd_url":"([^"]+)"', html) video_url = None if hd_match: video_url = hd_match.group(1).replace("\\u0025", "%").replace("\\", "") print("[+] Found HD video link.") elif sd_match: video_url = sd_match.group(1).replace("\\u0025", "%").replace("\\", "") print("[+] Found SD video link (HD unavailable).") else: # Fallback regex for alternative Facebook HTML structures fallback_match = re.search(r'hd_src:"([^"]+)"', html) or re.search(r'sd_src:"([^"]+)"', html) if fallback_match: video_url = fallback_match.group(1) print("[+] Found video link via fallback regex.") if not video_url: print("[-] Could not find the video source URL. The video might be private or deleted.") return False print("[*] Downloading video payload...") try: with requests.get(video_url, stream=True, headers=headers) as r: r.raise_for_status() with open(output_path, 'wb') as f: for chunk in r.iter_content(chunk_size=8192): if chunk: f.write(chunk) print(f"[+] Success! Video saved to: output_path") return True except Exception as e: print(f"[-] Error downloading stream: e") return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python fb_download.py ") sys.exit(1) fb_url = sys.argv[1] download_facebook_video(fb_url) Use code with caution. How to Run the Script Save the code above as fb_download.py . Run it via your command line interface: python fb_download.py https://facebook.com Use code with caution. 5. Method 3: JavaScript / Node.js Implementation This paper is for educational purposes only
response = requests.get(url, params=params) data = response.json() if "source" in data: video_url = data["source"] # Download video_url as above Steps to Use yt-dlp : import os import