mimicSeven steps: open on the hook, cut the dead air, caption every word, punch in on key lines, show the product when you mention it, add sound where it helps, and keep text in the apps’ safe zones and off the speaker’s face.
TikTok’s guidance is the bar: say what the video is about in the first three seconds and land the hook in the first six (TikTok Ads Help Center, 2025). Or skip to one step: give Mimic the raw clip and a style.
By the numbers
- 3 secTikTok's window to introduce what the video is about, for recall and awarenessTikTok Ads Help Center, 2025
- 14 / 35 / 6%Top, bottom and side margins Meta says to keep free of text on Reels adsMeta Ads Guide, 2026
- 20%+Lift in conversions Google says sound has shown on Shorts adsGoogle Ads Help, 2026
- 3–5Different creatives TikTok suggests per ad group: why brands ask for hook variationsTikTok Ads Help Center, 2025
Before you edit: read the brief again
Most UGC revisions come from missing something the brand asked for, not from bad editing. Check:
- Length and aspect ratio (almost always 9:16).
- Must-say lines: product name, offer, claims they’re allowed to make.
- Deliverables: captioned and clean versions, music or none, number of hooks, raw files.
- Reference video: the edit style they want you to match.
- Where it will run. Organic, or as an ad? Ads add a call-to-action button that covers more of the bottom. See usage rights and whitelisting.
1. Open on the hook
Start on the strongest line, even if you said it halfway through the take. Put it on screen as big text for the first second or two so it lands with the sound off. TikTok says to prioritize the hook in the first six seconds using suspense, surprise or emotion (TikTok Ads Help Center, 2025).
“Hi! So I’ve been trying this new protein powder…”
“I didn’t think protein could taste like this.” Text on screen: Protein that tastes like dessert?
Film two or three openers and edit a version with each. Brands test hooks: TikTok suggests 3–5 different creatives per ad group (TikTok Ads Help Center, 2025). More in how to write a video hook and the hook library.
2. Cut the dead air
Trim every pause, “um”, restart and false start. Keep the best version of each line. Leave a couple of frames either side of each word so nothing sounds clipped, and keep breaths inside a sentence so it still sounds human.
This is the step that makes UGC feel fast, and it’s the slowest by hand. Method and settings: how to remove silences from a video.
3. Caption every word
TikTok’s creative guidance says to use captions or text overlays for context, at about 5–10 words per second at most (TikTok Ads Help Center, 2025). For UGC that means word-by-word captions timed to the voice:
- Two to four words per line. One or two lines on screen.
- Highlight the keyword with color or size.
- Big, bold, high contrast. Readable on a phone at arm’s length.
- Spell the brand and product names exactly as the brand does.
Full guide: how to add captions to videos. Check caption lengths with the caption counter.
4. Punch in on key lines
A quick zoom says “this part matters” and hides the jump where you cut a pause. Use it on the claim, the number, the before-and-after, the price. Alternate wide and tight so neighboring shots never match. See the jump cuts guide for when and how much.
5. Show the product
Cut to the demo or product shot the moment it’s mentioned, with your voice continuing underneath. Two to four seconds per shot. This is proof, and it’s what the brand is paying for.
| You say | Show |
|---|---|
| “It's so easy to use” | Hands using it, one take, no cuts |
| “Look at the texture” | Macro close-up |
| “The app does it for you” | Screen recording, zoomed to the button |
| “After two weeks” | Before and after, side by side |
| “Link's below” / “use my code” | Product hero shot with the offer on screen |
Green screen (you in front of the product page or a screenshot) keeps your face on screen while the product plays. Picture-in-picture does the same for app demos.
6. Add sound where it helps
Google says sound, music, voiceover or both, has been shown to increase conversions by over 20% on Shorts ads (Google Ads Help, 2026). On UGC the voice comes first:
- Level the voice so every word sits at the same loudness.
- Music under, not over. If a word is hard to hear on a phone speaker, turn the music down.
- Effects on purpose: a pop on a keyword, a whoosh on a big zoom. Not on every cut.
If the video will run as an ad, use commercially licensed music or the platform’s commercial library. Many brands want a no-music version so they can add their own.
7. Keep text in the safe zone
The app covers parts of your video with buttons, the caption and the username. Meta’s rule for Reels: keep the top 14%, bottom 35% and 6% on each side free of text and logos (Meta Ads Guide, 2026). Captions just below the chin, hook text in the upper middle, nothing important in the bottom third or under the right-hand buttons.
And never put text over the speaker’s face, even if the reference video does. Details and a per-app table: TikTok, Reels and Shorts safe zones. Check a frame with the safe zone checker.
Copy a style that already works
The fastest way to a good edit is to copy one. Find a UGC video in the brief, or one whose edit you love, and match it point by point:
- Caption style: font, size, color, words per line, where they sit, how the keyword is highlighted.
- Pacing: how often it cuts, how often it zooms.
- Hook format: text on screen, a question, a bold claim, a visual first frame.
- Effects: which sounds, which transitions, how B-roll comes in.
That’s exactly what Mimic does. Pick one of its built-in styles, or a UGC video you own or may use, drop in your raw clip and any product shots or screen recordings, and get the video back cut, captioned word by word, with the hook, zooms, sounds and demos in place. Then change anything by hand or by typing (“bigger captions”, “cut the intro”).
Final check before you send
- Watch it muted on your phone. Can you follow it?
- Is the point clear by second three?
- Any pause, stumble or repeated line left?
- Brand and product names spelled right in every caption?
- Any text under the app’s buttons or over a face?
- Length, ratio and every deliverable from the brief?
Questions
What makes a good UGC edit?
It moves. A hook in the first seconds, no dead air, captions you can follow with the sound off, and the product on screen when it's mentioned. It should still look like a real person filmed it, not like a TV ad.
What app should I use to edit UGC?
Any editor that can cut on a waveform, zoom, add captions and layer B-roll works: CapCut, Premiere, DaVinci Resolve, Final Cut or a phone editor. Mimic does the whole edit from a raw clip, in the style of a reference video, in your browser.
Should UGC have captions?
Yes. Many people scroll with the sound off, and TikTok's own guidance says to use captions or text overlays for context. Caption every word, timed to the voice, big enough to read on a phone.
Where should text go on a TikTok or Reel?
Inside the safe zone: away from the top bar, the caption and buttons at the bottom, and the icons on the right. Meta says to keep the top 14%, bottom 35% and 6% each side free of text. And never over the speaker's face.
How long should a UGC video be?
Whatever the brief says. If it doesn't say, keep it short: Google suggests 10–30 seconds for action-focused Shorts ads. Cut until every line earns its place.
What should I deliver to the brand?
The edited video in 9:16, plus whatever the brief lists: often a version without captions or music, extra hook variations, and the raw footage. Ask before you edit, so you export everything once.
Can AI edit UGC for me?
Yes. Mimic does every step on this page from a raw clip, in the style of a reference video, and you can still change anything after by hand or by typing what you want.
Sources
- Creative best practices for performance ads, TikTok Ads Help Center (2025). Proposition in the first 3 seconds, hook in the first 6; captions or text overlays; 5–10 words per second; feature real people; 3–5 creatives per ad group
- Instagram Reels ads specs, Meta Ads Guide (2026). Leave 14% top, 35% bottom and 6% each side free of text and logos; 9:16
- Your guide to YouTube Shorts ads, Google Ads Help (2026). Sound shown to increase conversions by over 20%; 10–30 second vertical videos for action-focused campaigns