Generate Video From Prompt With Vertex AI
Submit a text prompt to generate a cinematic video via Vertex AI Veo 3 and automatically save the MP4 to your Google Drive.
What it does
Submit a text prompt to instantly generate a cinematic video via Vertex AI Veo 3 and have your finished MP4 automatically saved to Google Drive. You simply provide the prompt and access token through an n8n form trigger to receive the rendered file without manual handling.
Step by step
- Configure an n8n Form Trigger to accept the user's text prompt and a valid GCP access token.
- Set up an HTTP Request node with POST method targeting Vertex AI's long-running operation endpoint for Veo 3.
- Implement a Wait Node that polls the operation status until the 'done' field is true before proceeding.
- Use a Code node to decode the base64 video data and configure the Google Drive Upload node to save the file.
Where the LLM does the work
- Generate the specific JSON payload structure required by Vertex AI for Veo 3, including model version and generation parameters.
- Determine the optimal polling interval and timeout duration for the long-running operation to balance speed and resource usage.
- Craft error handling logic in the Code node to parse partial API responses or unexpected status codes gracefully.
Watch out for
Base64 strings can exceed n8n's default data size limits so you must increase the maxDataSize setting in your workflow configuration.
GCP access tokens expire after one hour so add logic to refresh the token if the workflow runs longer than expected.
The Google Drive API requires specific scope permissions so verify that the service account has read/write access to the target folder.
Tools that fit
Vertex AI Veo 3 LLM Video generation from text prompts
The agent brief
Everything your agent needs, including the gotchas. Copy it and go.
You are helping me build the following AI agent workflow. ## Goal Generate Video From Prompt With Vertex AI: Submit a text prompt to generate a cinematic video via Vertex AI Veo 3 and automatically save the MP4 to your Google Drive. ## Specification - What it does: Submit a text prompt to instantly generate a cinematic video via Vertex AI Veo 3 and have your finished MP4 automatically saved to Google Drive. You simply provide the prompt and access token through an n8n form trigger to receive the rendered file without manual handling. - Trigger: Run manually (Manual · on demand via form) - Autonomy: Fully hands-off - Expected setup effort: about an afternoon - Tools/services involved: - n8n: Workflow orchestration and HTTP requests - Vertex AI Veo 3: Video generation from text prompts - Google Drive: Storing the generated video file ## Known pitfalls, handle each one explicitly in your implementation 1. Base64 strings can exceed n8n's default data size limits so you must increase the maxDataSize setting in your workflow configuration. 2. GCP access tokens expire after one hour so add logic to refresh the token if the workflow runs longer than expected. 3. The Google Drive API requires specific scope permissions so verify that the service account has read/write access to the target folder. ## Reference implementation https://n8n.io/workflows/5228 (workflow template) Fetch and inspect this before building. If it matches my stack, adapt it; if not, rebuild the pattern with my tools. ## Process requirements 1. Before building: ask me which of the listed tools I actually use and what my platform is (n8n / Make / code / other). Do not assume. 2. Adapt the pattern to my answers; do not force the reference stack. 3. Address every pitfall above; tell me how you handled each. 4. Provide a test plan I can run before letting this touch real data. 5. Ask before any step that sends messages, modifies data, or spends money. Source: https://usecasesforagents.com/use-case/generate-video-from-prompt-with-vertex-ai/ via usecasesforagents.com
Frequently asked questions
Can I use a different Automation Platform than n8n?
Yes. n8n is only the example automation platform in this recipe. The same flow works with Home Assistant. Swap the automation platform connection and keep the rest of the setup as written.
Want this running in your business?
This is what I do. I design and build AI agents like this one, and keep them running. If you want it set up for your team instead of doing it yourself, get in touch.
Who it's for
Built for marketers who'd rather brief an agent than start from a blank doc.
Developers can adapt this to their own repo or ticket queue with the same trigger and tools.