Write a script, pick a persona, render in 90 seconds. Six AI video models, five short-form platforms, six creator-style script frameworks. Built for brands that need creator-volume output without a creator-roster budget — and shipped with the AI disclosure metadata every platform now requires.
Every short-form platform has different rules for aspect ratio, duration, and file size. We render to spec automatically — these are the numbers we hold to.
| Platform | Aspect ratio | Duration | Resolution | Max file | Format |
|---|---|---|---|---|---|
TTTikTok | 9:16 | 9-60s · 21-34s sweet spot | 720p+ | ≤ 500 MB | MP4 · MOV |
IGInstagram Reels | 9:16 | 15-90s · 15-30s sweet spot | 1080p+ | ≤ 4 GB | MP4 · MOV |
YTYouTube Shorts | 9:16 | ≤ 60s | 1080p+ | ≤ 256 MB | MP4 · MOV |
SCSnapchat Spotlight | 9:16 | 5-60s | 1080p+ | ≤ 500 MB | MP4 · MOV |
THThreads | 9:16 · 1:1 | ≤ 5 min | 1080p+ | ≤ 300 MB | MP4 · MOV |
Pick a platform in the composer above and the renderer fits the right aspect ratio, duration cap, and resolution. Captions are baked in by default — most short-form plays are muted on the platform side.
Most users publish their first AI UGC video in under two minutes. Here’s the workflow behind the composer.
Pick a one-line angle or load a template. The AI rewrites it in conversational, first-person creator voice — with the natural hedges and filler words that make UGC read as real, not as a corporate VO.
Choose a demographic preset — millennial casual, Gen-Z creator, founder, parent, athletic, or 50+. Personas are synthetic composites, not real people. The AI matches voice tone, pacing, and on-camera energy to the persona you pick.
Pick a model and platform. The renderer produces the talking head with frame-accurate lip-sync, native gestures, and embedded captions. 30–90 seconds per render; queue multiple variants in parallel.
Every export ships with C2PA-style provenance metadata that satisfies FTC, Meta, TikTok, YouTube, and EU AI Act disclosure rules. We surface a one-click "AI generated" toggle for the relevant platforms — you stay compliant by default.
Pick the demographic that matches your audience. Each persona is a composite — generated from broad training data, never modeled on a named individual or recognizable creator.
The "I just figured this out" energy. Best for skincare, home, lifestyle, and apps targeting working professionals who scroll TikTok between meetings.
High-tempo, chronically online, screen-record-and-react. Best for fashion, beauty, gaming, and apps targeting under-25 audiences on TikTok and Reels.
Direct-to-camera, "this is our story" tone. Best for B2B, SaaS explainers, and brand films where authority matters more than relatability.
Warm, lived-in, problem-solver voice. Best for household goods, kids products, finance, and meal-planning brands targeting 28–42-year-old parents.
High-energy, results-focused, mid-workout vibe. Best for supplements, fitness gear, athleisure, and any product whose proof is physical performance.
Trustworthy, measured, "I’ve seen what works" delivery. Best for health, supplements, finance, and any category where age signals credibility.
Every avatar is a synthetic composite — not a real person. ZNIX.ai does not generate likenesses of named individuals or recognizable creators. AI provenance metadata is embedded in every export so the disclosure required by FTC, Meta, TikTok, YouTube, and the EU AI Act is automatic.
These are the script structures that consistently drive watch-time on TikTok, Reels, and Shorts. Tap any card to load it as your prompt.
Whether you’re a DTC brand running 50 hooks a week or an agency briefing 30 client accounts, the workflow is the same: script, cast, render, disclose, ship.
Test 30 hook angles before committing $5K to a real-creator brief. Use the AI variants to find what voice and persona convert, then commission the human version of the winners. Spend goes to creators who already know the angle works.
Generate dozens of testimonial-style hooks per audience hypothesis. Match each persona to a creative cluster (parents → meditation app, Gen-Z → social app). Burn fewer dollars in early-stage testing while the network finds your winning combo.
Solo creators and small studios use AI UGC for B-roll variants and platform-specific cutdowns when they’ve already shot the hero version. The AI extends a single shoot into 10 platform-native posts, with disclosure handled automatically.
Show clients five UGC concepts in motion before scoping a shoot. Use AI variants to test which persona and angle land, then pitch the winning concept as a real-creator production. Closes deals 2–3 weeks faster than mood-board pitches.
Each model has a sweet spot for UGC video. Switch between them inside one workspace — Seedance for realism, Kling for lip-sync, MiniMax for multilingual.
Direct, tested advice for getting AI UGC videos that actually convert and stay platform-compliant — not just videos that look impressive in a demo.
Meta, TikTok, YouTube, and the EU AI Act all require disclosure when AI generates a person who looks real. Failing to disclose means takedowns, account warnings, and (in the EU) regulatory fines. ZNIX.ai embeds C2PA-style provenance metadata in every export, but you still toggle the platform-side "AI generated" label when you upload — that’s on you.
Three failure modes give AI UGC away: dead eyes (no micro-saccades), mouth motion that doesn’t match consonants, and hands that morph mid-gesture. Pick Wan 2.1 or Seedance 2.0 for face stability, keep gestures small and infrequent, and never have the persona pick up or hold an object that needs to look real — your real product photo handles that, not the avatar.
Polished scripts read as ads. Real UGC has filler ("um," "honestly," "I think"), self-corrections, and slightly off-rhythm pacing. The AI script writer adds these by default — don’t edit them out. Cluttered backgrounds, slightly off-axis framing, and natural light beat studio polish on every short-form platform.
A single AI UGC render almost never beats a real-creator video. Ten variants on the same script — different personas, different opening lines, different settings — beat one polished render every time. Burn one credit pack on testing, then promote only the top decile.
Health and medical claims, financial advice, products marketed to under-13 audiences, and political messaging all carry elevated regulatory risk when delivered by an AI persona. Most platforms ban or down-rank AI in these categories. If you’re in pharma, finance, or kids’ products, use AI UGC only for top-of-funnel awareness, never for claims.
For your one hero ad of the quarter, hire a real creator. AI UGC wins on volume, speed, and testing — not on the single best execution. The smart workflow is AI-first for testing 30 angles, then commission a human creator to produce the winner at hero quality.
Write a hook in 30 seconds. Render in 90. Test 10 variants by tomorrow. Ship the disclosed-by-default version your platform already requires.
No credit card required · Free credits on signup · AI disclosure metadata embedded