Script Download Facebook Video Repack «HD»

The term “script download Facebook video repack” refers to automated tools (scripts) designed to extract and download video content from Facebook, often followed by a “repacking” process—re-encoding, modifying metadata, or bundling the video with other files (e.g., subtitles, watermarks, or ads). These scripts are commonly used by content aggregators, archive teams, marketers, and casual users who want offline access to videos not natively downloadable via Facebook’s interface.

A minimal script to extract a progressive MP4 (not DASH):

import requests, re, json
url = "https://www.facebook.com/example/videos/123456"
session = requests.Session()
session.cookies.set("c_user", "your_cookie")  # Required
response = session.get(url)
A script is a set of automated instructions. Instead of manually using browser extensions or online tools, a script sends HTTP requests to Facebook’s servers, mimics a legitimate user session, extracts video source URLs, and downloads the segments (often DASH or HLS streams).
Facebook updates its frontend every few weeks. To keep your script download Facebook video repack working: script download facebook video repack

Graph API alternative:
curl -X GET "https://graph.facebook.com/v18.0/VIDEO_ID?fields=source&access_token=YOUR_TOKEN"

This returns a direct download URL.

Below is a production-ready script that performs the complete repack operation. Save it as fb_downloader.py.
#!/usr/bin/env python3
"""
Facebook Video Downloader + Repacker
Usage: python fb_downloader.py https://www.facebook.com/watch?v=123456
"""
import sys
import os
import subprocess
from urllib.parse import urlparse
def download_facebook_video(url, output_dir="downloads"):
"""
Download and repack a Facebook video using yt-dlp as backend.
yt-dlp handles the manifest parsing, segment fetching, and repacking automatically.
"""
if not os.path.exists(output_dir):
os.makedirs(output_dir) The term “script download Facebook video repack” refers
# Extract video ID for filename
video_id = urlparse(url).query.split("v=")[-1].split("&")[0]
output_template = os.path.join(output_dir, f"fb_video_id.%(ext)s")
# yt-dlp command: merge best video+audio, repack to mp4
cmd = [
    "yt-dlp",
    "-f", "bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best",  # select best streams
    "--merge-output-format", "mp4",                                     # repack container
    "--user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
    "-o", output_template,
    url
]
print(f"[*] Starting script download Facebook video repack for: url")
result = subprocess.run(cmd, capture_output=True, text=True)
if result.returncode == 0:
    print(f"[✓] Repack completed. File saved to output_template")
    print(result.stdout)
else:
    print(f"[✗] Error: result.stderr")
    sys.exit(1)

if name == "main":
if len(sys.argv) < 2:
print("Usage: python fb_downloader.py <facebook_video_url>")
sys.exit(1)
download_facebook_video(sys.argv[1])

How it works:

To run:

pip install yt-dlp (ensure ffmpeg is in PATH)

python fb_downloader.py https://www.facebook.com/example/video

The real power of a script is automation. Here's how to modify the script to process multiple URLs from a text file: Graph API alternative:  
  curl -X GET "https://graph
# batch_download.py
import sys
def batch_download(filelist):
with open(filelist, 'r') as f:
urls = [line.strip() for line in f if line.strip()]
for idx, url in enumerate(urls, 1):
print(f"Processing idx/len(urls)")
download_facebook_video(url)  # using previous function
batch_download("fb_links.txt")

Also possible to scrape all video links from a public page:
yt-dlp --flat-playlist --print url "https://www.facebook.com/PageName/videos"

Then pipe to your script.

To create a script that downloads and repacks a Facebook video, you generally need two core components: a downloader and an encoder.
| Problem | Solution |
|---------|----------|
| HTTP 403 Forbidden | Update User-Agent. Facebook blocks default Python requests. Use requests.Session() with cookies from a logged-in browser. |
| Audio missing | The manifest may have separate audio. Use -f bestvideo+bestaudio in yt-dlp. |
| ffmpeg not found | Install FFmpeg and add to system PATH. |
| Video is 360p only | Add &av=1 to URL or use mobile user-agent facebook.com/video.php?v=123 instead of /watch. |
| Script stops after 5 downloads | Facebook rate-limits by IP. Add time.sleep(10) between downloads. |