AI video editor for Reels — architecture, speed, and Pro
ClipoStack is an AI video editor with one pipeline: transcribe the speech, build an edit plan, render the file. It is not a timeline with smart buttons, and it is not a generator that invents a face or a script.
That pipeline is why a short talking-head finishes in minutes. Transcription and the first plan start when the upload lands. You review a structure that already exists.
Quality here is timing and structure, not a synthetic scene. Captions sit on word timestamps. The plan marks a hook, emphasis beats, and B-roll slots from words you already said.
Architecture
Transcribe
Audio is transcribed with Whisper-large-v3-turbo. Each word gets a timestamp. Captions and cuts hang on those timestamps, not on a guessed delay. Most European languages go through the same step.
Plan
The transcript goes to an AI director that returns a plan: a hook in the opening seconds, emphasis beats, and explicit B-roll slots. You can edit every item. The plan does not publish itself, and it does not replace lines you never spoke.
Render
Render burns captions from the word timestamps into one vertical MP4 and places the cutaways you picked. One file is the output for Reels, TikTok, and Shorts. There is no second caption pass per network.
Speed
Most short clips go from upload to a rendered file in under five minutes. The clock is model time plus your review of the plan, not an evening of scrubbing a timeline, nudging caption blocks, and hunting cutaway points by hand.
Generation quality
Nothing in the pipeline synthesizes a new performance. The transcript is the speech. The hook and the close are taken from sentences already in that transcript. If Whisper mishears a name or a brand, you fix the caption before render — the export uses the text you left on screen. Cutaways appear only in slots the plan marked; you choose the shot, including skipping a slot.
Pro tools
Pro is the paid studio on the same pipeline. The free quota — 10 credits, one project, 1080p — is documented on its own page. Pro changes the ceiling, not the architecture.
- Export up to 4K. The free plan stops at 1080p.
- Source videos up to 60 minutes, 10 active projects, uploads up to 5 GB.
- 30 credits each month. One credit still exports one minute. Credit packs add more without a second editor.
- Project files stay while the subscription is active.
Plans for studios and agencies
ClipoStack Pro is the public paid plan: 30 credits a month on the pipeline above. A studio runs client talking-head through the same three stages — transcribe, plan, render — instead of staffing a timeline seat per video. Ten active projects hold a small client roster. A 60-minute source covers a webinar or a long take you will cut down. 4K export is there when the deliverable is not a 1080p social file.
Agencies add volume with credit packs, not with another app install. The studio stays in the browser, so a producer and an editor open the same project without a per-machine license. When 30 credits is the constraint for a client week, buy a pack. The monthly grant and the pack draw from the same credit balance.
The three stages, in order
- Transcribe with word timestamps — Whisper-large-v3-turbo writes a timestamp on every word. The rest of the editor reads that transcript. Names and brands are worth a pass here, because captions and later cuts inherit the same words.
- Generate the edit plan — ClipoStack marks the hook, the emphasis beats, and the B-roll slots from the transcript. You edit the plan. Shots are still yours to choose.
- Render the approved cut — one vertical MP4, captions burned in from the word timestamps, cutaways only where you filled a slot. You post that file. The editor does not publish it.
Common questions
How is this AI video editor architected?
Three stages: Whisper transcription with a timestamp per word, an AI edit plan (hook, beats, B-roll slots), then a render that burns captions into one MP4. You approve the plan and the shots before export.
How fast is a short clip?
Most short clips go from upload to a rendered file in under five minutes. Review still sits in the middle — the plan is a starting cut, not an auto-post.
What does Pro include for a studio or agency?
30 credits a month, sources up to 60 minutes, 10 active projects, uploads up to 5 GB, export up to 4K, files kept while subscribed, and credit packs when the month runs hot. One credit exports one minute.
Does generation rewrite what I said?
No. The hook, the beats, and the captions come from the transcript. The model does not invent a script, a face, or a voice. You fix misheard names before render.
Related: How it works for the full product walkthrough, or Talking-head Reel for one talking-head take into one Reel.
The free quota — credits, the one-project cap, and signup without a card — is on its own page, linked below.
Also see the Free AI editor, the Online AI editor, the Descript alternative, and the CapCut alternative.