Fuck OpusClip.

... because good video clips shouldn't come with ugly watermarks or platform lock-in.

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SupoClip is an open-source, AI-powered video clipping tool. Give it a long video — a podcast, a talk, a stream VOD — and it finds the most viral-worthy moments, scores them, and renders them as vertical 9:16 clips with face-centered cropping, word-synced subtitles, hook titles, and optional B-roll. Run it yourself, customize it, inspect it — or use the hosted version and skip the setup.

Ways to Use SupoClip

Hosted web app	www.supoclip.com — no infrastructure to run
iOS app	SupoClip on the App Store — the same hosted pipeline, from your iPhone
Self-host	Docker Compose setup below — AGPL-3.0, unlimited usage on your own hardware
MCP server	mcp/ — use SupoClip from Claude, Cursor, and other MCP clients
REST API	API keys from /settings/api-keys authenticate the backend directly — see the API reference

Why SupoClip Exists

OpusClip is genuinely good at what it does — AI clip selection, accurate captions, virality scoring. But your usage is metered by plan, some exports carry platform branding, and your content and workflows live on their servers under their terms.

SupoClip gives you the same core pipeline without the leash:

• Self-hostable — run it on your own hardware, process as much as it can handle
• No watermarks — your content stays yours
• Open source — AGPL-3.0, full transparency, fork and extend it however you like
• Hosted option — when you'd rather not manage servers, the cloud version is there

Features

• AI clip selection — an LLM (Gemini, GPT, Claude, or a local Ollama model) picks the 3–7 most clip-worthy segments from the transcript
• Virality scoring — every clip gets hook, engagement, value, and shareability scores
• Smart vertical cropping — face detection keeps the speaker centered in the 9:16 frame
• Word-synced subtitles — AssemblyAI word-level timestamps, custom fonts, caption templates with animation styles
• Hook titles — an AI-written headline burned into the top of each clip's opening seconds
• B-roll & transitions — optional Pexels stock footage overlays and transition effects
• Built-in editor — trim, split, and merge clips, then export with platform presets (TikTok, Reels, Shorts)
• Real-time progress — live pipeline updates streamed to the browser while your video processes

Quick Start

You need Docker, an AssemblyAI API key for transcription, and one LLM provider key (Google, OpenAI, Anthropic, or a local Ollama).

git clone https://github.com/FujiwaraChoki/supoclip.git
cd supoclip

Create a .env in the root with your keys:

ASSEMBLY_AI_API_KEY=your_assemblyai_api_key
LLM=google-gla:gemini-3-flash-preview
GOOGLE_API_KEY=your_google_api_key

Then start everything:

docker-compose up -d

First startup takes a few minutes; watch it with docker-compose logs -f. Once healthy, open http://localhost:3000, create an account, and start clipping. The backend API lives at http://localhost:8000 with interactive docs at /docs.

To use a different LLM provider, self-host with Ollama, or configure the optional pieces (B-roll, analytics, emails, YouTube metadata), see the configuration guide. If something misbehaves, the troubleshooting guide covers the common failure modes.

Documentation

Everything beyond this page lives in docs/:

Guide	What it covers
Setup	Docker-first install, local development, first-run checklist
Configuration	Every environment variable, operating modes, provider options
App Guide	Screens, workflows, admin features, hosted vs self-host
Architecture	How the frontend, API, worker, queue, and pipeline fit together
API Reference	Backend endpoints, API keys, admin and billing routes
Development	Running locally without Docker, testing, contributing workflow
Troubleshooting	Fixes for the common ways things go wrong

Development & Testing

The stack runs locally without Docker too — see development for the backend (uv + FastAPI + ARQ worker) and frontend (Next.js + pnpm) commands. The test suite spans pytest, Vitest, and Playwright, all reachable from the repo root:

make test

License

SupoClip is released under the AGPL-3.0 License.

Contributions are accepted under the terms in CONTRIBUTING.md, including a license grant that allows the project owner to sublicense and relicense contributed code.