Veo3 Instagram Reel Generator – AI-Powered Video Ads With n8n
What You Will Learn
In this guide, you will learn how to use the Veo3 Instagram Reel Generator workflow template in n8n to automatically create short Instagram video ads using AI. By the end, you will understand:
- What the Veo3 Instagram Reel Generator workflow does in n8n
- How OpenAI GPT and the Veo3 API work together to create video ads
- How the workflow handles video generation, status checks, and captions
- How results are stored and managed in Google Sheets
- Who can benefit from this automation and what tools you need to use it
Overview: What This n8n Workflow Does
The Veo3 Instagram Reel Generator is a no-code n8n workflow template that automates the full process of creating short-form Instagram ad videos. It uses:
- OpenAI GPT models to turn your idea into a structured video prompt and caption
- Veo3 API via Wavespeed to generate 5 to 8-second vertical videos
- Google Sheets to log each ad, including the video link, caption, and status
You start with a simple message, such as a product brief or trend idea, and the workflow handles everything else. This makes it ideal for marketers and creators who want to quickly produce and test multiple Instagram Reels without manual editing.
Core Concepts Before You Start
1. Chat-Based Trigger
The workflow is designed to start from a chat-style input. You send a short message describing the ad you want, and this message becomes the starting point for all later automation steps.
2. Prompt Engineering for Video
Instead of sending your raw message to the video generator, the workflow uses OpenAI GPT as a “prompt engineer.” It rewrites your idea into a compact, visually descriptive prompt that Veo3 can use to create a video.
3. Asynchronous Video Generation
Video rendering takes time. The workflow sends a request to the Veo3 API, then waits and repeatedly checks the status until the video is ready. This polling loop is important for handling asynchronous processes inside n8n.
4. Caption Generation
Once the video concept is defined, the workflow uses OpenAI again to write an engaging Instagram caption that matches the style and message of the video.
5. Centralized Content Management
Every generated ad is logged in a Google Sheet. This gives you a simple dashboard where you can review, schedule, and track all your AI-generated Instagram Reels.
Step-by-Step: How the Veo3 Instagram Reel Generator Works in n8n
Step 1 – Start With a Chat Trigger
The workflow begins with a chat-like message that describes the ad you want to create. For example:
“Create an ad for a minimalist perfume brand using the ‘quiet luxury’ trend.”
This message can come from a chat interface, a form, or any n8n-compatible trigger that passes text into the workflow. In n8n, this node is responsible for capturing the user input and passing it on to the next step.
Step 2 – Convert the Idea Into a Video Prompt (Prompt Engineer with ChatGPT)
Next, the workflow sends your input to an OpenAI GPT model. This node acts as a “prompt engineer” that transforms your free-form idea into a structured video description tailored for Veo3.
The model generates a concise video prompt that:
- Describes the scene and setting
- Defines the tone and mood of the ad
- Specifies motion and visual dynamics
- Includes the product or brand style
- Highlights a clear marketing hook
To keep Veo3 generation efficient and focused, the prompt is kept within about 100 words. This prompt is then passed on to the video generation step.
Step 3 – Send a Veo3 Post Request and Wait
With the optimized prompt ready, the workflow calls the Veo3 API via Wavespeed. In this step, the n8n HTTP Request node sends a POST request that includes:
- The AI-generated video prompt
- Requested video duration, typically around 8 seconds
- Requested aspect ratio, set to vertical 9:16 for Reels and TikTok
After sending this request, the workflow does not immediately receive a finished video. Instead, it waits for a set period, usually 30 seconds, to give Veo3 time to start and progress with video generation.
Step 4 – Poll the Veo3 API With a Get Request Loop
Because video generation is not instant, the workflow uses a loop that checks the status of the video until it is complete. This is handled in two parts:
- Initial Get Request: After the first 30-second wait, n8n sends a GET request to the Veo3 API using the job or video ID returned by the POST request. This checks whether the video is finished.
- Loop and Delay: If the response indicates that the video is still processing, the workflow waits another 30 seconds and then sends another GET request. This loop continues until the API reports that the video is ready.
Once the video has been successfully generated, the API response includes the video URL, which is then used in the following steps.
Step 5 – Generate an Instagram Caption With OpenAI
After the video is ready and the final video prompt is known, the workflow calls OpenAI again. This time, it is used as a caption generator.
The AI creates a caption that is:
- Playful and engaging to capture attention
- Impactful from a marketing perspective
- Aligned with the visual concept and the original prompt
The result is a ready-to-use Instagram caption that complements the generated video, so you have both creative assets prepared automatically.
Step 6 – Log Everything in Google Sheets
The final step sends all important data to a Google Sheet, which acts as your content management hub. The n8n Google Sheets node appends a new row with:
- The headline or main idea of the ad
- The video URL returned by the Veo3 API
- The AI-generated Instagram caption
- A status field such as “Ready to Post”
This makes it easy to filter, schedule, and track all your AI-generated Instagram Reels in one place. You can also share the sheet with your team for approvals and planning.
Key Features and Benefits of This Workflow
Fully Automated From Idea to Ad
Once the workflow is set up in n8n, you can go from a simple chat message to a complete video ad and caption with no manual steps in between. This saves time and reduces repetitive work for marketers and creators.
Trend-Aware, Creative Video Prompts
Because the prompts are generated by OpenAI GPT models, they can incorporate current marketing trends, styles, and hooks. This helps you produce reels that feel fresh and relevant, based on the brief you provide.
Optimized for Short-Form Vertical Video
The workflow focuses on 5 to 8-second, 9:16 vertical videos, which are ideal for Instagram Reels and TikTok. This clear format focus helps you create content that fits platform best practices.
Built-In Caption Copywriting
You do not have to write captions manually. The workflow automatically generates playful, impactful captions that are designed to boost engagement and match the visual story of each video.
Simple Content Management With Google Sheets
Every ad is logged in Google Sheets, which gives you:
- A running list of all generated videos
- Easy access to video URLs and captions
- Status tracking, such as “Ready to Post”
This makes it easy to plug the results into your scheduling tools or content calendar.
No-Code and Easy to Customize in n8n
The entire workflow runs inside the n8n automation platform and can be modified without writing code. You can:
- Adjust wait times between Veo3 status checks
- Tweak the prompt engineering instructions for different brands
- Change how data is stored in Google Sheets
- Connect additional tools or triggers as needed
Who This Workflow Is For: Practical Use Cases
- Marketing teams and digital agencies: Quickly generate many short-form ads at scale for A/B testing and campaigns.
- Social media managers: Rapidly experiment with UGC-style content and trend-based reels without manual editing.
- Creators and brands: Capitalize on viral trends with minimal effort by turning ideas into ready-to-post video ads.
- Startups and small businesses: Automate video ad creation to save time and reduce production costs.
Tools and Integrations Used in the Template
This n8n workflow template connects several powerful tools:
- OpenAI GPT-4o and GPT-4.1 for:
- Transforming user input into structured video prompts
- Writing engaging Instagram captions
- Veo3 API via Wavespeed for:
- Generating AI-powered short-form videos
- Ensuring the correct duration and 9:16 vertical aspect ratio
- Google Sheets for:
- Storing prompts, video URLs, captions, and statuses
- Providing a simple content management view for your team
- n8n Automation Platform for:
- Orchestrating all steps from chat input to final logging
- Handling delays, loops, and API calls with a no-code interface
Quick Recap
To summarize, the Veo3 Instagram Reel Generator workflow in n8n:
- Starts with a chat-style brief about the ad you want.
- Uses OpenAI GPT to turn that brief into a detailed, concise video prompt.
- Sends the prompt to the Veo3 API to generate an 8-second vertical video.
- Waits and repeatedly checks the Veo3 API until the video is ready.
- Generates a playful, impactful Instagram caption with OpenAI.
- Logs the headline, video URL, caption, and “Ready to Post” status in Google Sheets.
All of this happens automatically, with no manual intervention once the workflow is configured.
FAQ
How long are the videos this workflow creates?
The workflow is configured to request short videos of about 5 to 8 seconds, with a default of around 8 seconds, which is ideal for Instagram Reels and TikTok.
What aspect ratio do the videos use?
The Veo3 API is instructed to generate videos in a 9:16 vertical format, which matches Instagram Reels and other vertical-first platforms.
Can I customize the prompts or captions?
Yes. In n8n, you can edit the prompt engineering instructions for OpenAI, adjust the tone of the captions, or add brand guidelines so that the outputs better match your style.
Do I need to know how to code?
No. This is a no-code workflow. You can configure and customize it inside the n8n interface using nodes and fields, without writing code.
Where can I see all generated videos and captions?
All results are saved into a Google Sheet, where you can view the prompts, video URLs, captions, and statuses like “Ready to Post.”
Try the Veo3 Instagram Reel Generator Template
If you are a marketer, creator, or business owner who wants to streamline Instagram Reel ad production, this n8n workflow template gives you an end-to-end automated system. Turn simple ideas into AI-generated videos and captions, then manage everything from a single Google Sheet.
Start automating your short-form video ads and scale your content production with AI-powered efficiency.
