Xiaohongshu Video Downloader & Summarizer

Download videos from Xiaohongshu (小红书/RedNote) and optionally generate a full resource pack: video + audio + subtitles + transcript + AI summary.

Workflow

Follow these 6 steps in order:

Step 1: Check Dependencies

Verify required tools are installed:

yt-dlp --version
ffmpeg -version

Both must be available. If missing, instruct the user to install:

• brew install yt-dlp (macOS) or pip install yt-dlp
• brew install ffmpeg (macOS)

Step 2: Get Video Information

/opt/homebrew/Caskroom/miniconda/base/envs/myenv/bin/python scripts/download_xiaohongshu.py "URL" --list-formats

This shows available formats and verifies the URL works with cookie authentication.

Step 3: Download Video + Extract Audio

For basic download (video only, backward compatible with v1.0):

/opt/homebrew/Caskroom/miniconda/base/envs/myenv/bin/python scripts/download_xiaohongshu.py "URL"

For full resource pack (video + audio + subtitles + transcript):

/opt/homebrew/Caskroom/miniconda/base/envs/myenv/bin/python scripts/download_xiaohongshu.py "URL" --full

For full resource pack + AI summary preparation:

/opt/homebrew/Caskroom/miniconda/base/envs/myenv/bin/python scripts/download_xiaohongshu.py "URL" --summary

The --full flag creates a folder ~/Downloads/<video title>/ containing:

• video.mp4 — original video
• audio.mp3 — extracted audio
• subtitle.vtt — WebVTT subtitles (via 3-tier strategy)
• transcript.txt — plain text transcription

The --summary flag implies --full and additionally saves .meta.json for AI summary generation.

Step 4: Subtitle Acquisition (Automatic — 3-Tier Strategy)

The script automatically tries these strategies in order:

1. Manual subtitles — yt-dlp --write-subs --sub-lang zh,en,zh-Hans,zh-CN
2. Auto-generated subtitles — yt-dlp --write-auto-subs
3. Whisper local transcription — Falls back to parallel_transcribe.py using faster-whisper

Step 5: Generate Transcript (Automatic)

The script automatically strips timestamps from VTT to produce transcript.txt.

Step 6: AI Summary (Claude generates summary.md)

If the user requested a summary (via --summary flag or by asking to "summarize"):

1. Read the transcript file:

   ~/Downloads/<video title>/transcript.txt
   

2. Read the metadata file:

   ~/Downloads/<video title>/.meta.json
   

3. Read the summary prompt template:

   reference/summary-prompt.md
   

4. Replace the template placeholders with actual values:

   • {{TITLE}} — from .meta.json
   • {{URL}} — from .meta.json
   • {{DURATION}} — from .meta.json
   • {{PLATFORM}} — "Xiaohongshu (小红书)"
   • {{TRANSCRIPT}} — contents of transcript.txt

5. Generate the summary following the template structure.

6. Save the result to:

   ~/Downloads/<video title>/summary.md
   

Options Reference

Option	Description	Default
-o, --output	Output directory	~/Downloads
-q, --quality	Video quality (best, 1080p, 720p, 480p)	best
--browser	Browser for cookies (chrome, firefox, safari, none)	chrome
-a, --audio-only	Download audio only as MP3	false
--list-formats	List available formats	false
--full	Full resource pack mode	false
--summary	AI summary mode (implies --full)	false

Output Structure

Basic mode (default)

~/Downloads/
└── <title> [<id>].mp4

Full resource pack mode (--full or --summary)

~/Downloads/<video title>/
├── video.mp4          # Original video
├── audio.mp3          # Extracted audio
├── subtitle.vtt       # WebVTT subtitles
├── transcript.txt     # Plain text transcript
├── .meta.json         # Video metadata (--summary only)
└── summary.md         # AI-generated summary (--summary only, written by Claude)

Supported URL Formats

Format	Example
Explore link	https://www.xiaohongshu.com/explore/676a35670000000013002578
Discovery link	https://www.xiaohongshu.com/discovery/item/676a35670000000013002578?xsec_token=TOKEN
Short link	http://xhslink.com/a/xxxxx

Troubleshooting

Problem	Solution
No video formats found	Log into xiaohongshu.com in browser first, use --browser chrome
Unable to extract initial state	CAPTCHA triggered — open URL in browser, solve it, retry
Link expired	Copy fresh share link (tokens expire)
No subtitles found	Script will fall back to Whisper transcription automatically
Whisper not available	Install uv (brew install uv) for automatic dependency management

Important Notes

• Always use the full share URL (with xsec_token) for best results
• Log into xiaohongshu.com in your browser before downloading
• Maximum video quality is typically 1080p (platform limitation)
• Whisper transcription requires uv for automatic dependency management, or faster-whisper installed manually
• Respect copyright and Xiaohongshu's terms of service