Veo 3 Ad Script Builder (GPT-4 + Google Docs Integration)

### Overview This n8n automation workflow streamlines the creation of professional video ad scripts tailored for Veo 3 by turning basic user inputs into cinematic, consistent, and highly structured prompts. Whether you're a marketing agency, content creator, or small business, this workflow ensures high-quality AI video generation at scale—without needing a professional copywriter or creative director. ### How It Works 1. **Form Trigger** Captures initial inputs via a web form: - Ad Category: Dropdown (Before & After, Brand Awareness, UGC Style, Educational) - Environment: Text (short description of setting/location) - Script: Raw ad copy - Spokesperson: Basic character idea (e.g., "young woman, confident, skincare expert") 2. **Build Persona Node** Uses GPT-4-Mini to expand spokesperson input into a full character description. Output includes: - Age - Race - Clothing - Hairstyle - Tone/Demeanor Ensures visual consistency in AI-generated video scenes. 3. **Build Environment Node** Transforms environment text into a detailed, cinematic setting. Adds descriptive elements like: - Lighting style - Architecture or background - Atmosphere (e.g., soft morning glow, modern interiors) 4. **Generate Copy Node** Breaks the full script into 10-second readable segments for smooth pacing. Helps tools like Veo 3 maintain flow, coherence, and readability. Outputs concise, camera-ready lines for each section. 5. **Google Docs Integration** Auto-updates a ready-to-use script template in Google Docs. Replaces placeholders with content from the 3 AI nodes: Cinematic shot: (Build Persona) in (Build Environment). They confidently address the camera: (Generate Copy). Professional lighting emphasizes credibility throughout. Final result: a polished video ad prompt, ready for Veo 3 or any AI video tool. ### Cost Efficiency Advantage Using the Veo 3 API directly costs $0.50 per second—meaning a simple 5-second video costs $3.75, and a 6-clip project could run up to $24. However, this workflow is optimized for Veo 3's Fast on Flow mode, which costs just $0.20 per clip. **Real Example:** 6 clips = $1.20 Savings = Over 90% More room for testing, iteration, and scaling This isn't just smart automation—it's financially strategic. ### Setup Instructions **Prerequisites** - Active n8n instance (Cloud or Self-Hosted) - OpenAI API Key (for GPT-4) - Google Docs API credentials **Configuration Steps** 1. Import the workflow into your n8n instance. 2. Add OpenAI credentials to the AI nodes. 3. Set up Google Docs integration in n8n. 4. Copy this template: **Veo 3 Script Template** 5. Update the Google Docs node with your copy's URL. 6. Test the flow by submitting the form. ### Use Cases - Marketing Agencies: Quickly generate ad scripts for multiple campaigns. - Content Creators: Scale up content production without creative burnout. - AI Video Producers: Maintain detailed, consistent inputs for each render. - Small Business Owners: Create pro-grade ads without outsourcing. ### Benefits - **Consistency:** AI ensures visual + narrative alignment. - **Speed:** Go from rough idea to finished ad script in seconds. - **Scalability:** Handle multiple clients and campaigns simultaneously. - **Quality Output:** Templates and pacing are optimized for real-world video use. - **Cost Savings:** Save up to 90% vs API-only generation.