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+# yt-shorts-downloader
+
+Typed Python library and CLI for downloading YouTube Shorts as MP4 using a Netscape cookie session file.
+
+## What this project does
+
+- validates a Netscape cookie file before download
+- validates that the URL belongs to YouTube
+- downloads the resulting video as MP4 through yt-dlp
+- exposes a typed Python API for returning MP4 bytes in memory
+- provides a CLI for saving the MP4 to disk
+- publishes package builds to Gitea Packages after successful CI on `main`
+
+## Public contract
+
+- input: YouTube URL and path to a Netscape cookie file
+- API output: `DownloadedVideo` with MP4 bytes in memory
+- CLI output: filesystem path to the downloaded MP4
+
+## Quick start
+
+### Python API
+
+```python
+from yt_shorts_downloader import download
+
+video = download(
+    'https://www.youtube.com/shorts/VIDEO_ID',
+    'cookies.txt',
+)
+
+assert video.media_type == 'video/mp4'
+content = video.content
+```
+
+### Save directly to disk
+
+```python
+from yt_shorts_downloader import download_to_path
+
+path = download_to_path(
+    'https://www.youtube.com/shorts/VIDEO_ID',
+    'cookies.txt',
+    output_dir='downloads',
+)
+```
+
+### CLI
+
+```bash
+uv run yt-shorts-downloader \
+  'https://www.youtube.com/shorts/VIDEO_ID' \
+  cookies.txt \
+  --output-dir downloads
+```
+
+## Requirements
+
+- Python 3.12+
+- valid Netscape cookie file
+- Deno or Node.js 22+
+- optional but recommended: ffmpeg
+
+## Documentation
+
+- [API](API)
+- [Session File](Session-File)
+- [Development and CI](Development-and-CI)