To make a YouTube Short or Reel with AI, open on a strong hook, generate your shots vertical, add burned-in captions, and cut it tight on the Compose timeline. Short-form lives or dies on the first second and the pace, so lead with your best visual and keep every beat quick. One idea becomes a scroll-stopping vertical video.
Steps at a glance
- Plan a hook and quick beats
- Generate vertical shots
- Add voiceover or music
- Burn in captions
- Cut tight and export
Make your Short step by step
1.
Plan a hook and quick beats
Short-form is won in the first second, so decide your hook before anything else: the single line or visual that stops the scroll. Then sketch a few quick beats that pay it off, one idea each, because pace is what keeps a viewer to the end. Resist the urge to explain slowly. A Short is a handful of sharp moments, not a condensed long video, so plan the punchy version from the start rather than trimming a sprawling one later.
2.
Generate vertical shots
Generate each beat as a vertical shot, framed tall for a phone from the start rather than cropped from a wide video afterward. Compose so the subject sits where a phone viewer's eye lands, in the middle of the frame. Direct the light and a little camera motion so each shot feels intentional, and keep shots short since you only need the seconds that hold. The text-to-video generator turns each beat into a clip.
3.
Add voiceover or music
Give the Short energy with sound. Generate a voiceover from your script if it is narration-led, directing the pace to match the quick cuts, or lay a music track and let the beat drive the edit. The AI voiceover guide covers directing the read. Either way, the audio sets the rhythm the visuals cut to, so choose it early rather than bolting it on at the end.
4.
Burn in captions
Most short-form is watched on mute, so burn in styled captions and treat them as part of the design, not an afterthought. Keep them short and high-contrast, timed to the voice or the beat, and placed where they will not clash with the subject. Captions carry the message for silent viewers and hold attention by giving the eye something to track between cuts, which measurably improves how long people watch.
5.
Cut tight and export
Assemble the beats on the Compose timeline and cut ruthlessly: lead with the hook, cut on motion, and remove anything that slows the pace. A Short is usually the strongest few seconds of what you generated, so be willing to drop good footage that does not serve the momentum. Export vertical, and from a paid plan for a clean, watermark-free file ready to post to Shorts or Reels.
Short-form versus long-form with AI
Short and long videos need different instincts. Here is what changes.
| Short / Reel | Long-form video | |
|---|---|---|
| Aspect | Vertical | Usually widescreen |
| Length | Seconds | Minutes |
| Opening | Hook in the first second | More room to set up |
| Edit | Fast cuts, high pace | Steadier pacing |
For the full shot-by-shot workflow, how to make an AI video covers it, and to keep a whole channel of Shorts going, see how to run a YouTube channel with AI.
Put it together
A strong Short is a hook, quick beats, captions, and a tight cut, all framed vertical. Decide the scroll-stopping opening first, generate tall shots for each beat, let the audio set the pace, and burn in captions for the muted majority. Cut to only what earns its place, and one idea becomes a vertical video built to hold a viewer to the last frame. The creators who post consistently treat this as a repeatable format: a saved hook style, a look, and a batching session that turns out several Shorts at once, so the feed keeps moving. Nail the first second and the pace, and a single clip can do the work that a whole day of filming used to, in a fraction of the time and with none of the gear. The same vertical clip works across Shorts, Reels, and TikTok, so one production feeds every short-form feed you post to.