Social Knowledge Base

Social Knowledge Base Turn a creator's short videos into a searchable knowledge base — watched, heard, and queryable.

Turns a creator's videos (Instagram today; TikTok/YouTube in progress) into a markdown knowledge base: an LLM watches (frames + OCR) and listens (transcription) to each video and writes down what it learned — for many videos, in a resumable way. The UI is bilingual (PT/EN).

> Two engines make it work. gallery-dl (with yt-dlp + ffmpeg) does the downloading — it's the library that actually pulls every Reel, Story, and Highlight from a public profile, authenticated by your browser cookies. Then the mcp-video-analyzer MCP does the reading — transcript + frames + OCR + timeline. Both are required (build them once — see [Setup](#setup)). The cookies are a credential — see [Security & cookies](#security--cookies).

> Market check: no open-source tool does the full flow (download a whole account incl. Highlights → watch + listen → knowledge base). The existing ones only transcribe one reel's audio at a time.

🚀 Quick start (run the app)

Docker (recommended — runs anywhere, nothing to install):

mkdir -p data && cp /path/to/cookies.txt data/cookies.txt   # cookies from a THROWAWAY account
docker compose up --build                                   # → http://localhost:3000

The image bundles Node 24 + Python + gallery-dl + yt-dlp + ffmpeg; the app calls those CLIs internally. The ./data volume persists downloads/ and the SQLite manifests on the host; the cookies.txt is auto-detected by the UI. GPU (optional): uncomment gpus: all in docker-compose.yml (needs the NVIDIA Container Toolkit).

Local (needs Node 24):

cd app && npm install && npm run dev                        # → http://localhost:3000

In the app: point to your cookies.txt, add a profile (or paste a video link → downloads just that one) and hit Play (live progress). Toggle PT/EN at the top. The transcription/notes (the knowledge layer) run outside the UI — see below.

How it works

1. Download — scripts/download_instagram.py (gallery-dl, authenticated by a browser cookies.txt) downloads the videos to downloads///. (Or via the app in app/.)
2. Transcription (GPU) — scripts/transcribe_gpu.py transcribes in bulk with faster-whisper medium on CUDA (~16–24× real time) and writes .vtt/.txt/.json sidecars per video. It auto-detects the GPU and falls back to CPU when there isn't one. Resumable.
3. Notes — Claude Code (any capable LLM; Claude Opus recommended), via prompts/build-notes.md, processes one video at a time (reusing the transcript via .vtt + frames/OCR through the MCP) and writes notes//videos/.md. The note language is configurable (default English) — see [Note language](#note-language).
4. Overview + RAG — prompts/synthesize-overview.md generates notes//OVERVIEW.md by theme; scripts/index_transcripts.py + scripts/index_notes.py + scripts/query.py provide search (the library is searchable with the transcription alone).

Setup

# 1. Python deps (download + GPU transcription + RAG)
pip install -r requirements.txt
# GPU (CUDA 12.8+, e.g. RTX 5060): pip install nvidia-cublas-cu12 nvidia-cudnn-cu12 nvidia-cuda-nvrtc-cu12 nvidia-cuda-runtime-cu12

# 2. ffmpeg — required for DOWNLOAD (yt-dlp merges video+audio; without it videos come out muted)
winget install Gyan.FFmpeg

# 3. Build the video-reading MCP (required for the notes phase)
cd ../mcp-video-analyzer && npm run build && cd -

# 4. Export cookies.txt from a logged-in IG session (use a THROWAWAY account)
#    Browser -> "Get cookies.txt LOCALLY" extension -> Export (Netscape format). Save it outside the repo.

> instaloader was abandoned: its web GraphQL endpoint returns 401 "Please wait a few minutes" since ~Jan/2025, on any account/IP. gallery-dl uses the browser cookies (the mobile API route, which IG still accepts).

.mcp.json points Claude Code at the local MCP build (v0.5.0), with WHISPER_MODEL/WHISPER_PROMPT (glossary), WHISPER_BIN and MCP_WRITE_SIDECARS=1. The transcription language is auto-detected per video (set a fixed WHISPER_LANGUAGE only to force one). Bulk transcription, however, runs on the GPU via transcribe_gpu.py; the MCP reuses those .vtts and focuses on frames/OCR.

> Windows: pip installs whisper.exe into Python's Scripts/ folder, usually not on the PATH Claude Code inherits — so .mcp.json sets WHISPER_BIN to the full path. Confirm yours with python -c "import os,sys;print(os.path.join(os.path.dirname(sys.executable),'Scripts','whisper.exe'))". The MCP doesn't need system ffmpeg (it uses the embedded ffmpeg-static); the download (gallery-dl/yt-dlp) does (Setup step 2), otherwise videos come out with no audio.

Usage (CLI)

# 1) Download all of a profile's videos (incl. Highlights)
python scripts/download_instagram.py  --cookies C:\path\ig_cookies.txt

# 2) Transcribe in bulk (resumable) + index for search
python scripts/transcribe_gpu.py 
python scripts/index_transcripts.py 

# 3) Generate notes: open Claude Code IN THIS directory and run prompts/build-notes.md
#    (one video at a time; use /loop for a batch)

# 4) Theme overview (in Claude Code): prompts/synthesize-overview.md -> notes//OVERVIEW.md

# 5) Search / RAG
python scripts/index_notes.py
python scripts/query.py "what did I learn about ?"

App (UI) — app/

A web app (Next.js 16 + TypeScript + Tailwind 4 + shadcn/ui) in [app/](app/) that gives the download a UI — a visual alternative to the CLI:

cd app && npm install && npm run dev   # → http://localhost:3000
npm run test                           # Vitest (engine/parsers)

• Single app (no Python backend): Node calls gallery-dl/yt-dlp/ffmpeg via child_process. Runs as a Node server (next dev/next start, node runtime).
• What works: add multiple profiles; download a single video by link (the owner profile is created automatically); choose media (image/video); Play → live progress (SSE) with size/time; native Windows folder picker; auto-detected cookies; library (thumbnail grid + search/filters/sort, opens in the system player) with select-all, bulk delete, and "free up space" — delete the video but keep the note as a readable note-only item, re-downloadable on demand; per-profile categories + a category filter; note generation via Claude Code (per video + per profile, language picker, live progress); LLM reading config (Whisper model/language/detail/OCR → written to .mcp.json); disk management; tooltips and confirmation on sensitive actions.
• Bilingual UI (PT/EN) — language toggle at the top (lightweight i18n, no extra dependency).
• Multi-network: profiles are grouped under their network; a SourceProvider abstraction (Instagram + TikTok; YouTube via yt-dlp in progress) keeps the knowledge pipeline network-agnostic.
• Theme: "Media Cinematic" (dark, glassy, coral→magenta→violet accent) — see [DESIGN.md](DESIGN.md).
• Manifest: per-account SQLite in manifests/.db (via node:sqlite) + a versionless JSON export manifests/.json. Migration: cd app && npx tsx src/server/migrate/importManifest.ts (reconciles with the disk).

Note language

The LLM-written notes have a configurable language. The default is English; the transcription itself is auto-detected per video by Whisper (e.g. pt for Portuguese audio), so a note can summarize Portuguese speech in English. Override the note default at three levels (most specific wins):

1. Global default — the analysis-settings panel (gear icon).
2. Per profile — the picker next to "Generate missing notes" on the profile card (remembered for that profile's batch).
3. Per video — the picker next to (Re)generate in the video dialog (a one-off for that note).

Success criteria

1. Every video in the account (incl. Highlights) has a .md note.
2. Each note captures what was said (transcript) and shown (OCR/visual).
3. Resumable via the SQLite manifest (records what was downloaded/read and when).
4. Readable transcription in the audio's language (faster-whisper medium on GPU + a domain glossary); notes in the configured language.
5. A per-profile index and notes//OVERVIEW.md (theme summary) with links back.
6. Later querying via RAG (query.py) with note citations.

Note template

The canonical note template + quality rules live in [prompts/build-notes.md](prompts/build-notes.md) (frontmatter keys + sections). The notes phase reads it directly.

Security & cookies

The cookies.txt is a live credential — a logged-in session from a throwaway account (highlights/stories require login). Keep it private (it's gitignored via *cookies*.txt), never commit it, and re-export it when it expires (downloads start redirecting to login). The app reads it server-side and never sends cookie values to the browser. gallery-dl already spaces requests (~10s) to avoid rate-limits/bans.

For the full threat model, hardening, and responsible use — you're downloading publicly-visible content with your own session, so respect each platform's Terms of Service and copyright — see [SECURITY.md](SECURITY.md).

Contributing & license

• Contribute: see [CONTRIBUTING.md](CONTRIBUTING.md) (setup, checks, conventions) and the [Code of Conduct](CODEOFCONDUCT.md).
• Security: report privately — see [SECURITY.md](SECURITY.md).
• License: [MIT](LICENSE) — covers this repository's code only. The tools it drives (gallery-dl, yt-dlp, ffmpeg, the MCP, faster-whisper, …) keep their own licenses; downloaded media belongs to its creators — see [SECURITY.md](SECURITY.md) ("Responsible use") before downloading or redistributing.

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: guimatheus92
• Source: guimatheus92/social-knowledge-base
• License: MIT

Install and usage instructions live in the source repository linked above.