What It Is

An automated workflow for creating Veo3.1 videos and posting them to YouTube.

The workflow consists of three main phases:

1. Create Veo3.1 Video
2. Wait for Video Processing
3. Post on YouTube

Create Veo3.1 Video

This phase handles initial video creation based on user input.

Type Prompt

A form trigger collects the user’s inputs:

• Prompt: A simple scenario for the video.
• Aspect Ratio: e.g., 16:9, 9:16, 1:1
• Videography (AI Refinement):
  An LLM refines the user’s prompt into a detailed "script-to-screen" format suitable for video generation.

Make FAL.AI Request

• Sends the refined prompt to the Fal.ai Veo 3.1 model via HTTP request.
• Video duration is fixed at 8 seconds.

Store Data

Stores video request details in a Google Sheet, including:

• Request date
• Refined prompt
• Fal.ai request URL

Wait for Video Processing

• The workflow pauses for 5 minutes.
• Veo videos typically require 3–5 minutes to finish processing.

Post on YouTube

This phase generates YouTube-optimized metadata and uploads the final video.

YT Video SEO

An LLM (acting as a YouTube SEO + viral strategist) generates:

• Video Title: Under 6 words
• Video Description: Detailed and optimized
• Video Tags: Relevant tags for discoverability

It follows virality best practices and YouTube’s tag rules.

Structured Output

• Parses structured JSON returned by the AI agent.

Get Keywords

• Extracts and formats tags into a comma-separated list suitable for YouTube.

Fetch Video Credentials

• Retrieves the final video URL and metadata from Fal.ai.

Download Video

• Downloads the generated video file.

Post on YouTube

• Uploads the video with the generated title, description, tags, and category.

Setup

To run this workflow, configure the following credentials in n8n:

OpenRouter

• Generate an API key from your OpenRouter account.

Google Sheets

• Uses OAuth 2.0
• Authenticate with your Google account.

YouTube Data API

• Configure credentials that allow n8n to post videos to YouTube.