Introducing Cardboard: Agentic Edits for Talking Footage in Browser or on Mac
Cardboard is a YC-backed agentic video editor — describe the cut, and it removes silence/false starts, adds captions and B-roll, then lets you finish on a real
Introducing Cardboard: Agentic Edits for Talking Footage in Browser or on Mac
Founders and creators who film themselves still lose evenings to pauses, false starts, and captioning the same take twice. Cardboard is a YC-backed agentic video editor: describe the edit in plain language, and it performs timeline operations — silence and retake cleanup, captions, B-roll, reframes — in the browser or a free Mac app, with a real multi-layer timeline you keep.
What Cardboard does
Cardboard is built for people who already have footage:
- Natural-language editing — ask for pause removal, highlight extraction, or a vertical reframe and get precise timeline ops
- Transcript-first cleanup — remove bad takes, fillers, stutters, and dead air while meaning survives
- Captions, stock B-roll, motion — word-level captions, supporting footage placement, reframes, and motion graphics on a multi-layer timeline
- Browser or Mac — WebGL compositor in-browser, or a Mac app that can keep footage local and work with your own agent tools
Explore:
Who it is for
Indie founders, coaches, and teams who record talking content and want an agentic first cut without learning a blank NLE from scratch — or shipping a synthetic avatar instead of their own face.
Where it fits in a content stack
Cardboard owns one (or many) real takes → reviewed, captioned package. It is complementary to storyboard-first explainer tools: Cardboard packages what you filmed; explainers teach a process when film is the wrong medium.
Quick tips if you try Cardboard
- Start with one clear hook so retakes are variants of the same point.
- Use chat for intent, timeline for precision on the last mile.
- Toggle captions and B-roll density per platform (9:16 vs 16:9).
- Export XML/FCPXML when a client finish needs Premiere or Resolve.
- Email humans@cardboard.ai for product questions.
Soft close — related tool
If you also need concept → storyboard → animated or whiteboard explainer / Reels (not talking-avatar presenters), see Scro Explainer. Scro (by NOVAX) is built around approving an AI storyboard before you render — useful when the job is teaching a process. Keep Cardboard as the focus of this intro; Scro is only a related option for storyboard-first explainers.