How-toStep workflow: long YouTube → vertical Shorts.
How to Turn a YouTube Video into Shorts with AI
A practical workflow for creators who already uploaded long YouTube videos and want vertical clips without scrubbing the timeline for an hour.
Before you pick a tool
- Have rights to repurpose the footage (your channel, or cleared guest/brand rights).
- Know the outcome: 3 hero Shorts vs 15 spray-and-pray clips.
- Decide if a human must approve before posting (rules out some auto-post products).
Generic AI clipping workflow
- Import the YouTube URL or download/upload the master file into a clipper (Opus, Vizard, Klap, Cliphi, Videotto, etc.).
- Let AI propose moments—scan titles/scores, not every frame.
- Filter hard: keep clips with a clear hook in the first 1–2 seconds and a complete thought.
- Reframe & captions: confirm faces stay in frame; fix garbled words on names/brands.
- Export clean files (avoid shipping free-tier watermarks on monetized channels).
- Optional CapCut pass for hook text, pacing, and end screens—see CapCut vs AI clippers.
- Publish to Shorts/TikTok/Reels with a unique title; do not spam identical captions everywhere if the algorithm is already tired of duplicates.
Tool chooser for this workflow
| Situation | Try | Why |
|---|---|---|
| You want maximum clip candidates from one upload | Opus Clip or Vizard | Mature “long → many shorts” loop; both have free tiers to test |
| You prefer paying per finished clip | Klap | Clip-count plans; one free trial video |
| You want new YouTube uploads auto-posted as shorts | EasySlice | Automation-first; trial is one clip—read limits first |
| Source is a livestream / needs speaker tracking | Cliphi | Markets live clipping + framing |
| You want to describe the edit in chat/prompts | Videotto | Otto-style prompt editing plus clipping credits |
Still stuck between the majors? Opus vs Vizard vs Klap. Budget questions: pricing · free map.
Quality checklist (print-worthy)
- Hook visible without sound (big text or obvious action).
- Captions readable on a phone; no covering faces.
- No mid-sentence start/end unless intentional jump-cut style.
- Safe margins for platform UI (especially TikTok).
- CTA matches the long video (subscribe, watch full episode, lead magnet).
Auto-post without review can publish a bad take, a private joke, or a competitor shout-out. If that scares you, keep a human in the loop.
FAQ
How many Shorts should I cut from one YouTube video?
Start with 3 strong clips. Shipping 20 mediocre clones trains you to ignore quality. Add more only after the first batch earns retention.
Do I need a paid plan on day one?
No. Use forever-free or trials to judge clip taste, then pay when watermark/export limits block real publishing. Details on free AI clippers.