Version One

tools/instaloader/README.md

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+# Instaloader Helper
+
+A small wrapper around Instaloader to download a single Instagram post/reel.
+
+Reference project: instaloader/instaloader (MIT) — https://github.com/instaloader/instaloader
+
+## Setup
+
+```bash
+cd tools/instaloader
+python -m venv .venv
+source .venv/bin/activate
+pip install -r requirements.txt
+```
+
+## Login options
+- Env vars: `IG_USERNAME`, `IG_PASSWORD`
+- Or a session file: `IG_SESSIONFILE` together with `--username`. Create it via:
+  ```bash
+  instaloader --login YOUR_USERNAME
+  # After successful login, pass the created session file path via IG_SESSIONFILE or --sessionfile
+  ```
+
+## Usage
+```bash
+# In the virtualenv
+python download_ig.py --url https://www.instagram.com/p/DPujDRJDNov/ --out ./downloads
+# or provide username/password via env
+IG_USERNAME=... IG_PASSWORD=... python download_ig.py --url https://www.instagram.com/p/.../ --out ./downloads
+# or use a session file
+IG_SESSIONFILE=/path/to/sessionfile python download_ig.py --url https://www.instagram.com/reel/.../ --username YOUR_USERNAME
+```
+
+- Prints the first downloaded `.mp4` path on success.
+- Exits with non-zero code if the post is image-only or access is restricted.
+
+

tools/instaloader/download_ig.py

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+#!/usr/bin/env python3
+import argparse
+import os
+import shutil
+import requests
+import json
+import re
+import sys
+from pathlib import Path
+
+try:
+    import instaloader
+except Exception as e:
+    print(f"Error: instaloader not installed. Run: pip install -r requirements.txt\n{e}", file=sys.stderr)
+    sys.exit(1)
+
+
+def extract_shortcode_from_url(url: str):
+    m = re.search(r"instagram\.com\/(?:p|reel)\/([^\/?#]+)", url, re.I)
+    return m.group(1) if m else None
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Download Instagram post media using Instaloader")
+    parser.add_argument('--url', required=True, help='Instagram post/reel URL')
+    parser.add_argument('--out', default='downloads', help='Output directory (default: downloads)')
+    parser.add_argument('--username', default=os.getenv('IG_USERNAME'), help='Instagram username (env IG_USERNAME)')
+    parser.add_argument('--password', default=os.getenv('IG_PASSWORD'), help='Instagram password (env IG_PASSWORD)')
+    parser.add_argument('--sessionfile', default=os.getenv('IG_SESSIONFILE'), help='Instaloader session file path (env IG_SESSIONFILE)')
+    args = parser.parse_args()
+
+    shortcode = extract_shortcode_from_url(args.url)
+    if not shortcode:
+        print('Error: Could not parse shortcode from URL', file=sys.stderr)
+        sys.exit(2)
+
+    out_dir = Path(args.out).resolve()
+    out_dir.mkdir(parents=True, exist_ok=True)
+
+    L = instaloader.Instaloader(
+        download_comments=False,
+        post_metadata_txt_pattern='',
+        download_video_thumbnails=False,
+        save_metadata=False,
+        compress_json=False,
+        quiet=True,
+    )
+    # Silence logging further to keep stdout clean for the final path only
+    try:
+        L.context.log = lambda *_a, **_k: None  # type: ignore[attr-defined]
+        L.context.log_progress = lambda *_a, **_k: None  # type: ignore[attr-defined]
+        L.context.error = lambda *_a, **_k: None  # type: ignore[attr-defined]
+        L.context.warning = lambda *_a, **_k: None  # type: ignore[attr-defined]
+    except Exception:
+        pass
+
+    # Login if possible
+    if args.sessionfile and args.username:
+        try:
+            L.load_session_from_file(args.username, args.sessionfile)
+        except Exception as e:
+            print(f"Warning: failed to load session from {args.sessionfile}: {e}", file=sys.stderr)
+    elif args.username and args.password:
+        try:
+            L.login(args.username, args.password)
+        except Exception as e:
+            print(f"Warning: login failed: {e}", file=sys.stderr)
+
+    # Resolve and download
+    try:
+        post = instaloader.Post.from_shortcode(L.context, shortcode)
+    except Exception as e:
+        print(f"Error: resolve failed: {e}", file=sys.stderr)
+        sys.exit(3)
+
+    # Prefer downloading just the first video directly into out_dir as <shortcode>.mp4
+    video_url = None
+    try:
+        if getattr(post, 'is_video', False) and getattr(post, 'video_url', None):
+            video_url = post.video_url
+        else:
+            # Sidecar posts may contain one or more videos
+            for node in post.get_sidecar_nodes():
+                if getattr(node, 'is_video', False) and getattr(node, 'video_url', None):
+                    video_url = node.video_url
+                    break
+    except Exception:
+        video_url = None
+
+    dest_path = (out_dir / f"{shortcode}.mp4").resolve()
+    description = ''
+    try:
+        description = getattr(post, 'caption', '') or ''
+    except Exception:
+        description = ''
+
+    if video_url:
+        try:
+            with requests.get(video_url, stream=True, headers={
+                'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123 Safari/537.36',
+                'accept': '*/*',
+                'referer': 'https://www.instagram.com/',
+            }, timeout=60) as r:
+                r.raise_for_status()
+                with open(dest_path, 'wb') as f:
+                    for chunk in r.iter_content(chunk_size=1024 * 256):
+                        if chunk:
+                            f.write(chunk)
+            print(json.dumps({"video_path": dest_path.as_posix(), "description": description}, ensure_ascii=False))
+            return
+        except Exception:
+            # Fall back to full download if direct fetch fails
+            pass
+
+    # Fallback: Use Instaloader's downloader into a temp subdir, then move the first mp4 up
+    try:
+        target = out_dir / shortcode
+        target.mkdir(parents=True, exist_ok=True)
+        L.download_post(post, target.as_posix())
+        mp4s = sorted(target.glob('*.mp4'))
+        if not mp4s:
+            print('No video found (post may be image-only)', file=sys.stderr)
+            sys.exit(4)
+        src_path = mp4s[0]
+        if dest_path.exists():
+            dest_path.unlink()
+        shutil.move(src_path.as_posix(), dest_path.as_posix())
+        print(json.dumps({"video_path": dest_path.as_posix(), "description": description}, ensure_ascii=False))
+    except Exception as e:
+        print(f"Error: download failed: {e}", file=sys.stderr)
+        sys.exit(3)
+
+
+if __name__ == '__main__':
+    main()
+
+

tools/instaloader/requirements.txt

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+instaloader==4.14.2
+
+