How to Use ChatGPT & Flow to Create AI UGC Videos

Understand Your Product

Before opening ChatGPT, answer four questions about what you are promoting:

• What problem does the product solve?
• Who is the target customer (age, gender, interest)?
• What makes it different from competitors?
• What action do you want viewers to take?

Example brief: Product — Vitamin C Serum. Target audience — women aged 20–40. Goal — increase website sales. CTA — Shop Now. Knowing these details before writing a single word produces scripts that are focused, persuasive, and relevant.

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Use ChatGPT to Write the Script

ChatGPT can generate a complete marketing script in under two minutes when given the right prompt. A useful prompt includes:

• Product name and description
• Target audience details
• Desired tone (friendly, luxury, educational, urgent)
• Video length (20 seconds, 30 seconds, 45 seconds)
• Call-to-action you want at the end

Ask ChatGPT to structure the script in sections: Hook → Product Introduction → Key Benefits → Social Proof → CTA. This structure consistently outperforms scripts written without a clear flow. The hook — the opening two to three seconds — is the most important part. If viewers skip it, nothing else matters.

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Refine the Script

Don't use the first draft as-is. Read it aloud. If it sounds unnatural, it will sound worse on camera. Refine until:

• The opening hook is specific, not generic ("Tired of dull skin?" beats "Introducing our new product")
• The tone matches your brand voice and audience
• Benefits are concrete, not vague ("Reduces dark spots in 14 days" beats "improves skin")
• The CTA is clear and creates urgency ("Shop now — limited stock" or "Link in bio")
• The total speaking time fits your target video length

A conversational tone consistently performs better than formal marketing language, especially on TikTok and Instagram Reels.

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Write Scene Descriptions for Flow

Break your script into short scenes — typically 3 to 8 seconds each. For each scene, write a detailed description to feed into Flow. The more specific your descriptions, the more consistent and usable the output will be.

Each scene description should include:

• Character appearance (age, hair, skin tone, expression)
• Clothing and styling
• Background or setting
• Camera angle (close-up, mid-shot, over-shoulder)
• Lighting style (soft daylight, warm indoor, bright studio)
• Product placement (held in hand, on shelf, applied to skin)
• Movement or gesture required

Example scene description: "A young South Asian woman, late 20s, wearing a white linen shirt, applying a small amount of serum from a glass dropper bottle to her cheek. Soft natural window light. Close-up on face. She smiles subtly as she pats her skin. Clean white background."

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Generate Video Scenes in Flow

Import your scene descriptions into Flow and generate each scene individually rather than as one long video. This gives you:

• The ability to replace weak or off-brief scenes without regenerating everything
• Greater consistency across the video — you can refine one scene at a time
• More control over pacing and timing during editing
• Easier quality filtering — discard scenes that don't meet standard, regenerate, repeat

Generate 3 to 5 variations of each scene and select the strongest. Short individual clips are far more manageable than one long continuous video.

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Add Voiceover

You have two options for audio narration:

AI Voice

Fast, cost-effective, and increasingly realistic. Tools like ElevenLabs or Murf AI generate natural-sounding voices in multiple languages including English and Urdu. Best for high-volume content, product ads, and educational videos where speed matters.

Human Voice

Adds personality, warmth, and emotional nuance that AI voices still struggle to match. Often the better choice for premium brand campaigns or content where trust and connection are the primary goal. Record clean audio with a decent microphone in a quiet room — the production value is in the voice, not the studio.

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Edit the Video

This is where the advertisement comes together. Whether you use CapCut, Premiere Pro, or DaVinci Resolve, the edit should include:

• Assembled scenes in script order with smooth transitions
• Synced voiceover or on-screen dialogue
• Branded captions and subtitles (80% of social video is watched without sound)
• Brand logo placement (opening and closing frames)
• Product shots woven naturally into the sequence
• Background music that matches the mood without overpowering the voice
• Motion graphics for key claims (e.g., "14-Day Guarantee", "⭐⭐⭐⭐⭐ 4.9 Rating")
• Clear CTA frame at the end (text + visual)

Keep the pacing quick. Most social video ads lose a significant portion of their audience after 5 seconds — every second of your edit must earn its place.

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Optimize for Each Platform

Export different versions for each platform. Format requirements:

Platform	Aspect Ratio	Max Length
Instagram Reels	9:16 vertical	90 seconds
TikTok	9:16 vertical	10 minutes
Facebook Reels	9:16 vertical	90 seconds
YouTube Shorts	9:16 vertical	60 seconds
Pinterest Idea Pins	9:16 vertical	60 seconds
Website / Display Ads	16:9 or 1:1	30–60 seconds

Export at 1080×1920 for vertical formats. For paid ads, also produce a square (1:1) version and a landscape (16:9) version to cover all placement types across Meta and Google.