Stop making AI videos that look obviously “fake.”

If your AI UGC has wandering eyes, lip-sync that lags, or broken hand movements, you’re not “creating content.” You’re burning ad spend.

Most creators fail not because the tools are weak—but because they rely on one-click avatars:

they force audio into pre-baked motion templates → the result is an instant uncanny valley effect that viewers scroll past in a second.

To get professional results, you need a workflow that treats Person / Motion / Voice as separate parts you control.

Below are 3 battle-tested combos we use to pass a “realism test,” plus copy-paste prompts you can use immediately.

‍

Phase 1: “Role Locking” — If you mess this up, everything after is wasted

Don’t generate video first. Lock the character first.

You’re building a stable Base Persona (an asset), and every video in the campaign should reuse the same person—so your content becomes consistent, controllable, and repeatable.

⚠️ Important: Don’t chase studio-perfect beauty.

Real UGC feels real because of a bit of grain, small imperfections, and slight asymmetry. The more “perfect,” the more it screams AI.

Tool: Nano Banana Pro

Goal: Create one fixed character you can reuse across the entire campaign

📸 Image Prompt (Copy-Paste)

A realistic UGC-style vertical smartphone portrait photo (9:16). A beautiful Hong Kong woman in her 20s, natural appearance with no heavy retouching, taking a casual selfie while holding the product in a cozy living room. Visible natural skin texture, subtle natural makeup. Soft daylight coming through a window. Slightly imperfect composition, gently blurred background, mild film grain. Relaxed, unposed posture. Camera angle looks like a real front-facing phone selfie—not a studio shoot, not staged, no set design. Overall feel like authentic Instagram / Xiaohongshu / pre-ad UGC footage—NOT a model photo, NOT a polished brand key visual, NOT “AI-generated” looking.

Phase 2: 3 Proven Workflows (Combos)

You don’t need “the most magical tool.” You need the most reliable process.

Combo 1: “Brand Asset” Workflow — High control, best for long-term ads

Best for: Building a brand-owned AI UGC character you reuse every campaign

Core strategy: Build Motion first, then Voice, then Lip Sync

→ This avoids the stiff “preset motion + forced audio” look.

Workflow:

Generate video in KlingAI (silent first): only aim for realistic human motion

Generate audio in Minimax: add pauses, light breathing, conversational rhythm (don’t read it like a news anchor)

Lip sync back in KlingAI: re-calculate mouth movement + micro-expressions from your audio

(If subscribed, you can use Kling v2.6 for native audio generation.)

✅ Non-negotiable rule: one shot, one action

The more you demand (hold product + point at camera + turn and walk), the more hands break, eyes drift, and everything looks fake.

🎥 Video Prompt

A realistic UGC-style talking video, the girl is introducing the perfume product

🗣️ Script (Cantonese)

今日我想同大家分享呢支我最近成日用嘅NextMaven香水。 我每次出門前都會噴一下，本來以為會好甜，但其實聞落真係好舒服好自然。

Combo 2: “Rapid Testing” Workflow — High volume A/B testing (deadline saver)

Best for: Agencies / in-house teams who need multiple hook variations overnight

Core value: Not the prettiest—the fastest way to generate a testable batch

Key trick: Lock the camera feel as “handheld but stable”

→ This hides motion flaws while preserving UGC realism.

Setup: Use your Nano Banana Pro persona image as reference

Generate: Veo 3.1 using “Image + Script” mode

Prompt tip: Keep “handheld but stable” to reduce AI movement artifacts

🎥 Video Prompt (Short Reference)

SHOT — Medium close-up framing the woman from chest up...

STYLE — Realistic UGC style with handheld camera feel but stable framing.

(Full prompt in the Resource Library below.)

Combo 3: “High-End Hero Clip” — Maximum visual polish

Best for: Landing pages / hero creatives / high-aesthetic ads

Sora 2 can deliver stunning detail—but it often applies strict safety filters for real faces.

✅ Workaround: Don’t upload a real face photo. Upload only the product image.

Let Sora generate the person—this reduces the chance of rejection.

🎥 Sora 2 Prompt (Short Reference)

A realistic UGC, a young Hong Kong woman is holding the perfume and introducing the perfume in a real home environment...

(Full prompt in the Resource Library below.)

Phase 3: The 15-Second “3-Cut Edit” = The realism engine

Real UGC is rarely a single long take.

Editing lets you hide tiny lip-sync imperfections and create a natural pace.

15-second pacing template (Copy-Paste)

1. Mid-shot opener (5–7s): deliver the hook (eye contact locked to camera)

2. Hand close-up (3–4s): hold product / spray wrist / smell (one shot, one action)

3. Mid-shot close (5–7s): deliver the takeaway + simple close

How to execute:

Split the same script into 3–4 short lines

Generate one short clip per line

If one segment fails, re-generate that segment only (don’t redo the whole video)

Use captions + timing to mask micro lip-sync issues (especially around pauses)

Pre-publish “3-Gate” checklist

Before posting, check these. If one fails, re-generate only that segment:

Eyes: Is the gaze locked to the camera?

Lips: Does the mouth follow pauses and breathing?

Hands: Are movements stable (no extra fingers / warped gestures)?

‍

📂 Resource Library: Full Prompts

Combo 2 (Veo 3.1) — Full Prompt

No subtitles. No music.

SHOT — Medium close-up framing the woman from chest up, centered.

SUBJECT — Young woman with long dark hair worn down, natural makeup. Wardrobe: casual beige ribbed top with short sleeves, soft texture.

SCENE — Indoor living room with natural daylight from large window on left. Background includes neutral tones of beige and cream sofa, dried flowers in glass vase on wooden sideboard, framed artwork, and soft cozy decor. Daytime setting.

VISUAL DETAILS — Woman holds a square glass perfume bottle with silver cap close to the camera; bottle label reads "Next Maven AI". Lighting highlights bottle's transparency and liquid inside.

ACTION AND CAMERA MOTION — Woman looks directly into the camera, smiles gently, lifts perfume bottle toward camera then slightly sprays it near wrist, inhales with a content expression, then explains verbally.

CINEMATOGRAPHY — Soft natural lighting from window creating gentle shadows. Warm, inviting color palette of earthy neutrals to enhance intimate, honest atmosphere.

AUDIO — Voice: Female, natural conversational tone. Dialogue: "今天我想跟大家分享这支我最近常用的NextMaven香水。 我每次出门前都会喷一下，本來以為會好甜，但其實闻起来真的很舒服很自然。" Ambient sounds: very light room ambiance, subtle breathing. No music.

STYLE — Realistic UGC style with handheld camera feel but stable framing. High quality 4K resolution. No overlays, no subtitles, no text on screen other than visible product label.

Combo 3 (Sora 2) — Full Prompt

A realistic UGC, a young Hong Kong woman is holding the perfume and introducing the perfume in a real home environment.

She lightly sprays the perfume onto her wrist or into the air. After spraying, she pauses briefly, then gently inhales, reacting naturally to the scent.

Her movements should feel casual and slightly imperfect, not posed, not staged, like a spontaneous UGC clip recorded on a phone.

Audio (Cantonese voice-over, natural female voice): The tone should be soft, relaxed, and conversational, like talking to a friend, not advertising.

Cantonese script to be spoken naturally with small pauses: "今日我想同大家分享呢支我最近成日用嘅NextMaven香水。 我每次出門前都會噴一下，佢，味道唔重， 聞落真係好舒服好自然。"

‍

Conclusion: Don’t let tools limit your results

No matter which combo you choose, remember: realism is built from details.

Eye contact, breathing pauses, and edit pacing are what turn an AI video from “obviously fake” into high-performing ad creative. Stop betting everything on one tool—start thinking like a director who composes a workflow.

‍