Verdict
Do not vibe-code OBS. Contribute plugins upstream, or build adjacent SaaS (clip editors, stream dashboards) that sits next to OBS.
What you can rebuild
Almost nothing that is actually OBS. You can build a marketing site, a scene preset checklist web app, or a streaming startup dashboard. Not the compositing engine.
What stays hard
Native capture, GPU encoding, plugin ecosystem, and cross-platform device drivers. This is C++/Qt territory, not Lovable territory.
Starter prompt
Do not rebuild OBS. Instead build StreamDeck Lite Web: a browser dashboard for streamers that stores scene checklists, overlay links, and a 'going live' runbook, with optional webhook buttons that call OBS WebSocket if the user runs OBS locally. Be explicit in the UI that this is a companion, not a replacement. Stack: Next.js, Tailwind.
Follow-up prompt
Add: OBS WebSocket connection helper, saved profiles per game/show, and a post-stream notes form that exports Markdown.
Build it with these tools
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Reference product: obsproject.com. We are not affiliated. Prompts build inspired MVPs, not trademarked clones for commercial misuse.