Viral video creator: Fal.ai AI videos → TikTok, YouTube & Instagram automation

🎬 The AI Viral Video Factory: From Concept to Content in Minutes

This n8n workflow is a fully automated pipeline that takes a creative concept and transforms it into a polished, platform-ready short-form video. It ideates, generates video and audio using AI, merges them, and publishes the final content to your social media accounts!

✨ Core Features

• Automated Ideation: Leverages GPT-4 to generate unique, trend-aware ASMR video concepts, complete with captions and hashtags.
• AI-Powered Visuals: Uses Fal.ai to transform text prompts into multiple cinematic video scenes.
• Custom Soundscapes: Generates matching ASMR audio tracks to enhance the sensory experience.
• End-to-End Automation: The entire process, from idea generation to social media publishing, runs automatically on a schedule.
• Content Management: Logs all ideas and final video URLs into Google Sheets for easy tracking and management.

🛠️ Setup and Configuration Guide

Follow these detailed steps to get the workflow running. You'll need accounts for n8n, OpenAI, Google, Fal.ai, and Blotato.

Prerequisites

• n8n instance (self-hosted or cloud)
• OpenAI account with API access
• Google account with Sheets access
• Fal.ai account with API access
• Blotato account for social media publishing
• Connected Instagram and TikTok accounts in Blotato

Step 1: Google Sheets Template Setup

This workflow requires two separate sheets in a single Google Spreadsheet.

1. Create a new Google Spreadsheet

   • Go to Google Sheets and create a new spreadsheet
   • Name it something memorable (e.g., "AI Video Factory Data")
   • Note the Spreadsheet ID from its URL:

     https://docs.google.com/spreadsheets/d/SPREADSHEET_ID_IS_HERE/edit#gid=0
     

   • You'll need this ID later for the workflow configuration

2. Sheet 1: Idea Logging

   This sheet stores the initial ideas generated by the AI.

   • Create a sheet and name it exactly: Ideas

   • Set up the following columns in this exact order (case-sensitive):

     Column A	Column B	Column C	Column D	Column E
     Caption	Idea	Environment	Sound	Status

   • Do not add any additional columns or headers

3. Sheet 2: Final Output Logging

   This sheet stores the links to the final, published videos.

   • Create a second sheet in the same spreadsheet

   • Name it exactly: Published

   • Set up the following columns in this exact order (case-sensitive):

     Column A	Column B	Column C	Column D
     final_output	thumbnail_url	status	created_date

   • Do not add any additional columns or headers

Step 2: API Key and Credentials Configuration

You need to obtain and configure credentials for each service used in the workflow.

OpenAI Configuration

1. Get your API Key:

   • Go to platform.openai.com
   • Navigate to API Keys section
   • Create a new API key and copy it

2. Add to n8n:

   • In n8n, go to Credentials > New
   • Search for "OpenAI" and select it
   • Paste your API key
   • Name the credential (e.g., "OpenAI account")
   • Save the credential

3. Update the workflow:

   • In the nodes LLM: Generate Raw Idea (GPT-4.1) and LLM: Draft Video Prompt Details (GPT-4.1)
   • Select the OpenAI credential you just created

Google Sheets Configuration

1. Set up OAuth2:

   • In n8n, go to Credentials > New
   • Search for "Google Sheets" and select Google Sheets OAuth2 API
   • Follow the OAuth setup instructions to connect your Google account
   • Name the credential (e.g., "Google Sheets account")

2. Update the workflow:

   • In all Google Sheets nodes:
     • Save Idea & Metadata to Google Sheets
     • Save Final Video URL to Sheets
     • Retrieve Final Video Data
   • Select your Google Sheets credential
   • Enter your Spreadsheet ID in the Document ID field
   • Ensure the sheet names match exactly ("Ideas" and "Published")

Fal.ai Configuration

1. Get your API Key:

   • Sign up at fal.ai
   • Go to your dashboard and get your API Key
   • The key format is: key xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

2. Update the workflow:

   • No separate n8n credential needed
   • Find these HTTP Request nodes and update the Authorization header:
     • Generate Video Clips (Wavespeed AI)
     • Generate ASMR Sound (Fal AI)
     • Merge Clips into Final Video (Fal AI)
     • Poll Video Generation Status
     • Poll Sound Generation Status
     • Poll Merge Status
   • In each node's Header Parameters, replace {{YOUR_FAL_AI_KEY}} with your actual key
   • The value should be: key YOUR_ACTUAL_FAL_AI_KEY

Blotato Configuration

1. Get your API Key:

   • Sign up at blotato.com
   • Get your API key from the dashboard
   • Connect your Instagram and TikTok accounts
   • Note down the Account IDs for each platform

2. Update the workflow:

   • In these nodes:
     • Upload Video to Blotato
     • Publish to Instagram
     • Publish to TikTok
   • Replace {{YOUR_BLOTATO_API_KEY}} with your actual API key in the Header Parameters

3. Set Social Media IDs:

   • In the Assign Social Media IDs node
   • Replace {{YOUR_INSTAGRAM_ACCOUNT_ID}} with your Instagram account ID from Blotato
   • Replace {{YOUR_TIKTOK_ACCOUNT_ID}} with your TikTok account ID from Blotato

Step 3: Workflow Activation

1. Test the workflow:

   • Use the manual trigger to test before scheduling
   • Monitor each node's execution
   • Check Google Sheets for proper data logging

2. Schedule automation:

   • The workflow is set to run daily
   • Adjust the schedule in the Trigger: Start Daily Content Generation node as needed

⚙️ Workflow Breakdown

Ideation & Storage

The workflow triggers on schedule. An AI Agent generates a unique ASMR video concept and saves the Idea, Caption, Environment, and Sound details into your first Google Sheet.

Scene Prompting

A second AI Agent takes the approved idea from the sheet and creates three detailed, cinematic scene prompts designed for text-to-video AI.

Video & Audio Generation

The workflow makes parallel API calls to Fal.ai:

• Generates a video clip for each of the three scenes
• Generates a single, corresponding ASMR audio track
• Continuously polls Fal.ai until assets are ready

Merging & Finalizing

Once all assets are generated, it sends a request to Fal.ai's FFMPEG API to stitch the video clips and audio track into one final video.

Logging & Publishing

The final video URL is saved to your second Google Sheet. The workflow then uploads this video to Blotato and publishes it to your specified Instagram and TikTok accounts.

🎨 Customization Guide

Content Type Customization

To adapt this workflow for different content types:

1. Modify the AI prompts:

   • In AI Agent: Generate Creative Video Idea, update the prompt to match your content style
   • Adjust the systemMessage to reflect your brand voice and content guidelines

2. Change video parameters:

   • In Generate Video Clips (Wavespeed AI), modify:
     • duration: Video length (default: 10 seconds)
     • aspect_ratio: Change from "9:16" to "16:9" for horizontal videos

3. Adjust audio generation:

   • In Generate ASMR Sound (Fal AI), update the prompt for different audio styles
   • Modify cfg_strength (1-10) for more/less adherence to prompt

Platform-Specific Adjustments

1. Instagram-specific:

   • Maximum video duration: 90 seconds for Reels
   • Optimal hashtag count: 5-10

2. TikTok-specific:

   • Maximum video duration: 10 minutes
   • Optimal hashtag count: 3-5
   • In Publish to TikTok node, adjust privacy settings as needed

Scheduling Options

Modify the Trigger: Start Daily Content Generation node:

• Change from daily to hourly, weekly, or specific times
• Add multiple triggers for different time zones
• Use cron expressions for complex schedules

Error Handling

Add error handling nodes:

• Connect error outputs to notification systems
• Log failed attempts to a separate Google Sheet
• Implement retry logic for API failures

🎯 Perfect For

• Content Creators looking to scale their output with minimal effort
• Digital Marketers seeking a consistent stream of engaging, trend-based content
• Brands wanting to build a strong presence on short-form video platforms
• Automation Enthusiasts building content-driven businesses

🚀 Getting Started

1. Import the workflow into your n8n instance
2. Follow the setup guide above step-by-step
3. Test with manual execution first
4. Monitor the first few automated runs
5. Adjust prompts and parameters based on results

📧 Support

For questions or issues with this template:

• Email: [email protected]
• n8n Community Forum: community.n8n.io

🔧 Technical Stack

• Workflow Engine: n8n
• AI Models: GPT-4, Fal.ai (Wavespeed & MMAudio-v2)
• Data Storage: Google Sheets
• Publishing: Blotato API
• Output: Platform-optimized 9:16 videos with synchronized ASMR audio

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