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Create blog posts from YouTube videos with Mistral AI & Gemini image generation

ZakwanZakwan
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2/3/2026
n8n
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Description

This template automates the process of creating blog posts from YouTube videos using Mistral AI for text generation and Gemini for image generation. It provides a seamless workflow that transforms YouTube content into ready-to-publish articles complete with engaging visuals.

⚠️ Disclaimer: This template can only be used on self-hosted n8n instances. It also relies on community nodes, which must be installed before running the workflow.

Workflow Overview

YouTube Data Extraction – Retrieves video details (title, description, and transcript).

Content Summarization – Mistral AI rewrites and structures the transcript into a blog-ready format.

Image Generation – Gemini creates relevant, high-quality images to complement the article.

Post Assembly – The workflow automatically combines the generated text and visuals into a structured blog post.

Features

Extract video details and transcripts directly from YouTube.

Summarize and rewrite content into blog posts using Mistral AI.

Generate relevant images with Gemini for engaging visuals.

Automatically structure blog posts for publishing.

Requirements

Before using this template, ensure you have:

An active self-hosted n8n instance.

API keys for OpenRouter (Mistral AI) and Gemini.

The required community nodes installed.

Access to public or unlisted YouTube videos.

Setup Instructions

Import the template into your self-hosted n8n instance.

Configure the API credentials:

Add your OpenRouter API key.

Add your Gemini API key.

Replace placeholder domains or webhook URLs with your own.

Run the workflow with a sample YouTube video URL.

Review the generated blog post and images.

Customization

Content length: Adjust prompt settings in the Mistral AI node.

Tone of voice: Modify prompts for formal, casual, or technical style.

Image style: Update Gemini requests to change the look and feel.

Publishing: Connect to your CMS (e.g., WordPress, Ghost) for direct publishing.

How YouTube is Involved

The workflow starts with a YouTube video URL, extracts metadata and transcripts, and then transforms this raw content into a complete blog post enriched with AI-generated images.

WorkFlow: image.png

n8n Workflow: Create Blog Posts from YouTube Videos with Mistral AI & Gemini Image Generation

This n8n workflow automates the process of generating blog posts from YouTube video transcripts, creating relevant images, and publishing them to WordPress. It leverages AI models like Mistral for content generation and Gemini for image creation, streamlining content production from video content.

What it does

This workflow performs the following key steps:

  1. Triggers on Schedule (or Manually): The workflow can be initiated on a schedule (e.g., daily, weekly) or manually.
  2. Fetches YouTube Video Transcripts (Placeholder): (Currently a placeholder, but designed to fetch video transcripts).
  3. Generates Blog Post Content with AI: Uses an AI Agent (likely Mistral or a similar LLM) to transform the video transcript into a structured blog post, including title, summary, and content.
  4. Generates Featured Image with AI: Employs another AI Agent (likely Gemini or a similar image generation model) to create a featured image based on the blog post's title or summary.
  5. Processes and Prepares Image: The generated image is edited (e.g., resized, cropped) and converted into a suitable file format.
  6. Publishes to WordPress: Creates a new blog post in WordPress, including the generated content and featured image.
  7. Logs to Google Sheets (Placeholder): (Currently a placeholder, but designed to log details of the published posts to a Google Sheet).

Prerequisites/Requirements

To use this workflow, you will need:

  • n8n Instance: A running n8n instance.
  • AI Credentials:
    • Ollama Chat Model: Access to an Ollama instance running a compatible chat model (e.g., Mistral).
    • Gemini Image Generation (via HTTP Request): An API key or access to a service that provides Gemini image generation capabilities (configured via an HTTP Request node).
  • WordPress Account: Credentials for a WordPress site where the blog posts will be published.
  • Google Sheets Account (Optional): Credentials for a Google Sheets account if you wish to log published posts.
  • YouTube API Key (for transcript fetching - future enhancement): While not explicitly configured in the provided JSON, a YouTube API key would be required to fetch video transcripts if that functionality were to be fully implemented.

Setup/Usage

  1. Import the Workflow: Download the JSON file and import it into your n8n instance.
  2. Configure Credentials:
    • Ollama Chat Model: Ensure your Ollama Chat Model node is correctly configured to connect to your Ollama instance.
    • HTTP Request (for Gemini Image Generation): Update the "HTTP Request" node with the correct API endpoint and authentication for your Gemini image generation service.
    • WordPress: Set up your WordPress credentials in the WordPress node.
    • Google Sheets (Optional): Configure your Google Sheets credentials in the Google Sheets node.
  3. Review and Customize:
    • AI Agent Prompts: Examine the "AI Agent" nodes and adjust the prompts to fine-tune the blog post and image generation to your specific needs and desired tone.
    • Image Editing: Modify the "Edit Image" node if you have specific requirements for image dimensions or other manipulations.
    • WordPress Post Settings: Adjust the settings in the "WordPress" node, such as post status, categories, or tags.
    • YouTube Video Source: The current workflow is designed to be triggered manually or on a schedule. To fully automate, you would need to add a node to fetch YouTube video URLs or IDs (e.g., from an RSS feed, Google Sheet, or another trigger).
  4. Activate the Workflow: Once configured, activate the workflow. You can run it manually or let the "Schedule Trigger" initiate it at your defined intervals.

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