How to make UGC-style ads with AI

UGC ads are formulaic enough to systematise. Here is the workflow that survives contact with reality: three beats, one reusable creator, and a shot-by-shot generation pass instead of one long take.

User-generated-content ads — the handheld, unpolished, someone-talking-to-their-phone format — outperform glossy brand films on every short-form platform, and they have for years. The awkward part was always production: you needed a person, a phone, a script they could deliver, and three takes before it sounded natural.

AI generation changes the cost of that, but not the format. The ads that work still work for the same reasons. What follows is a workflow that produces one usable ad in an hour or so, and gets faster the second time because most of the work is reusable.

What "UGC-style" actually means

It means the ad does not look like an ad. Specifically:

  • Handheld framing. Slightly off-centre, slightly too close.
  • One person, talking. Not a voiceover over stock footage.
  • A hook in the first two seconds. Not a logo, not a title card.
  • A single ask at the end. One instruction, not three.

The most common mistake with AI-generated ads is over-production: a cinematic dolly move and a colour grade that screams budget. That is the opposite of the format. If your output looks like a commercial, the format's advantage is gone.

Write three beats before you generate anything

Every UGC ad that works is three sentences long:

  1. Hook — the problem, stated the way the viewer would state it. Not "tired of inefficient workflows" but "I kept losing the good take."
  2. Demonstration — the product doing the thing. Shown, not described.
  3. Ask — one instruction. "Link in bio" or "try the free tier", never both.

Write these three sentences in a document before you touch a generator. If they are not good as text, no amount of generation will save them, and you will discover this after spending an hour on shots.

If you want the beats to carry timing as well as wording, the Script tool holds them as timed segments and can voice each one, so the length of the ad is decided before any footage exists.

Cast your creator once, then reuse them

This is the step that separates a coherent ad from four clips of four different people.

Generate a still image of your creator first — a single portrait, framed the way the ad will be framed. Iterate on the still until the person looks right. Stills are fast and cheap compared to video, so this is where you should spend your re-rolls.

Then use that image as the start frame for every video shot. The generator inherits the face, the lighting and the wardrobe instead of inventing new ones each time. Consistency across shots is almost entirely a function of feeding the same seed image in, not of prompt wording.

Some models take a start frame and an end frame, which lets you pin both ends of a movement — useful when a beat has to finish in a specific pose. Others take a start frame only. Both are fine for this format; the start frame is the one that matters here.

Generate shot by shot, not scene by scene

Generate each beat as its own clip. A four-second clip that misses is cheap to re-roll. A twenty-second one is not, and you will almost always want to fix one moment rather than the whole thing.

This is also why generating inside an editor matters more than it sounds. When the generator and the timeline are the same tool, a bad shot is a re-roll in place — the rest of the cut, the captions and the audio all stay exactly where they were.

Re-roll the shot, not the video.

A practical rule: if you are re-rolling the same beat more than three times, the problem is the beat, not the model. Go back and rewrite the sentence.

Give them a voice

You have two honest options.

Record yourself. Nothing sounds more like a real person than a real person. Drop the recording on an audio lane and use lip sync to match the generated creator's mouth to it.

Generate the voiceover. Faster, and fine for a first test — but listen to it once at full volume before committing. Generated speech that sounds slightly wrong is worse than obviously synthetic speech, because viewers notice without knowing why.

Either way, get the audio in before you fine-tune the visuals. The cut is driven by the words.

Cut it

Drop the three clips on the timeline in beat order. Then do the three things that make the difference:

Trim the dead air off the front of every clip. Generated video almost always opens with a beat of nothing before the motion starts. That half-second at the top of your hook is the most expensive half-second in the ad. Cut it.

Add captions. Most short-form is watched muted. Word-level captions — the kind that highlight as they are spoken — measurably hold attention, and auto-captions generate them from your audio track rather than making you type. This is not a nice-to-have for this format.

Leave the transitions alone. Hard cuts. A dissolve between beats of a UGC ad reads as production value, which is the thing you are trying not to have.

Export for the platform

Vertical 9:16 for Reels, TikTok and Shorts. 1080p is enough — the platforms re-encode aggressively, and 4K mostly buys you upload time. Export 4K only if the ad will be re-cropped or reused in a landscape placement later.

Check the first frame before you upload. It becomes the thumbnail in several placements, and a generated first frame is sometimes a half-formed version of the shot.

A realistic checklist

  • Three beats written as sentences
  • Creator still generated and locked
  • Each beat generated separately from that still
  • Audio in before visual polish
  • Dead air trimmed off every clip head
  • Captions on
  • Hard cuts only
  • 9:16, first frame checked

The first ad takes an hour. The fifth takes fifteen minutes, because the creator still, the beat structure and the caption style all carry over. That is the actual advantage — not that any single ad is faster to make, but that the format becomes repeatable.