Installation is straightforward using pip , Python’s package manager:
import re import requests from bs4 import BeautifulSoup def download_public_fb(url): headers = 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36' response = requests.get(url, headers=headers) soup = BeautifulSoup(response.content, 'html.parser') # Search for video source links within the page scripts script_text = "".join([script.text for script in soup.find_all('script')]) # Regex to find HD or SD video quality URLs hd_match = re.search(r'browser_native_hd_url":"([^"]+)"', script_text) sd_match = re.search(r'browser_native_sd_url":"([^"]+)"', script_text) video_url = None if hd_match: video_url = hd_match.group(1).replace('\\u0025', '%').replace('\\', '') elif sd_match: video_url = sd_match.group(1).replace('\\u0025', '%').replace('\\', '') if video_url: print("Video URL located. Downloading...") video_data = requests.get(video_url, stream=True) with open("fb_video.mp4", "wb") as f: for chunk in video_data.iter_content(chunk_size=1024 * 1024): if chunk: f.write(chunk) print("Saved as fb_video.mp4") else: print("Could not find video URL. The video might be private.") Use code with caution. 3. Bash Scripting (Linux & macOS)
Play the video. Right-click anywhere on the page and select (or press F12 ) to open Developer Tools.
Many high-definition Facebook videos are delivered via DASH (Dynamic Adaptive Streaming over HTTP) manifests, which split the content into separate video and audio files. Without FFmpeg, a naive download might capture only a silent video stream or low-quality audio. Advanced solutions like the desktop app (built with Tauri) and the FastAPI production API automatically detect these streams and merge them using FFmpeg, guaranteeing a complete file with full audio. script download facebook video
import yt_dlp def download_facebook_video(video_url, output_path='%(title)s.%(ext)s'): ydl_opts = # Format code 'best' fetches the highest combined video and audio quality 'format': 'bestvideo+bestaudio/best', 'outtmpl': output_path, 'quiet': False, 'no_warnings': True, try: print(f"Starting download for: video_url") with yt_dlp.YoutubeDL(ydl_opts) as ydl: ydl.download([video_url]) print("Download completed successfully!") except Exception as e: print(f"An error occurred: e") if __name__ == "__main__": # Replace with your target Facebook video URL FB_URL = "https://facebook.com" download_facebook_video(FB_URL) Use code with caution. How to Run It Execute the script from your terminal: python fb_map.py Use code with caution. Method 2: The Node.js Approach (Puppeteer)
yt-dlp -f bestvideo+bestaudio --merge-output-format mp4 "URL" Use code with caution. 3. Creating a Custom PHP/JS Facebook Downloader Script
Restricted to authenticated profiles. A script must pass valid session cookies or access tokens to simulate an authorized browser session. Video Quality Architecture (SD vs. HD) Many high-definition Facebook videos are delivered via DASH
What are you running? (Windows, macOS, Linux) Do you prefer a command-line tool or a graphical script ? Are you downloading public videos or private/group videos?
Contains high-resolution visual data without sound. Audio-only stream: Contains the accompanying soundtrack.
The Cause: The video is likely set to Private, Friends-Only, or age-restricted. providing verbose output.
Are you downloading or content from private groups ?
sudo apt install ffmpeg sudo wget https://github.com -O /usr/local/bin/yt-dlp sudo chmod a+rx /usr/local/bin/yt-dlp Use code with caution. Step 2: Create the Shell Script Save this script as fetch_fb.sh :
import yt-dlp import sys def download_fb_video(video_url): # Configure download options ydl_opts = # Download the best quality video and best quality audio, then merge them 'format': 'bestvideo+bestaudio/best', # Save file as 'Video_Title.mp4' in the current directory 'outtmpl': '%(title)s.%(ext)s', # Force merge into MP4 container 'merge_output_format': 'mp4', 'quiet': False, 'no_warnings': False, try: print(f"Analyzing video URL: video_url") with yt-dlp.YoutubeDL(ydl_opts) as ydl: ydl.download([video_url]) print("Download completed successfully!") except Exception as e: print(f"An error occurred: e") if __name__ == "__main__": if len(sys.argv) > 1: url = sys.argv[1] download_fb_video(url) else: url = input("Please enter the Facebook video URL: ") download_fb_video(url) Use code with caution. Step 3: How to Run It Execute the script from your terminal: python fb_downloader.py "https://facebook.com" Use code with caution. Why This Python Script is Best
If you have a Facebook account, you can pass your cookies to yt-dlp to access private or age-restricted content. The -vU flag is handy for troubleshooting, providing verbose output.