AI content creation and publishing engine with Mistral, Creatomate, and YouTube

Description

This n8n workflow automates the entire process of creating and publishing AI-generated videos, triggered by a simple message from a Telegram bot (YTAdmin). It transforms a text prompt into a structured video with scenes, visuals, and voiceover, stores assets in MongoDB, renders the final output using Creatomate, and uploads the video to YouTube. Throughout the process, YTAdmin receives real-time updates on the workflow’s progress. This is ideal for content creators, marketers, or businesses looking to scale video production using automation and AI.

---

You can see a video demonstrating this template in action here: https://www.youtube.com/watch?v=EjI-ChpJ4xA&t=200s

---

How it Works

1. Trigger: Message from YTAdmin (Telegram Bot)

• The flow starts when YTAdmin sends a content prompt.

1. Generate Structured Content

• A Mistral language model processes the input and outputs structured content, typically broken into scenes.

1. Split & Process Content into Scenes

• The content is split into categorized parts for scene generation.

1. Generate Media Assets

• For each scene:

• Images: Generated using OpenAI’s image model.

• Voiceovers: Created using OpenAI’s text-to-speech.

• Audio files are encoded and stored in MongoDB.

1. Scene Composition

• Assets are grouped into coherent scenes.

1. Render with Creatomate

• A complete payload is generated and sent to the Creatomate rendering API to produce the video.
• Progress messages are sent to YTAdmin.
• The flow pauses briefly to avoid rate limits.

1. Render Callback

• Once Creatomate completes rendering, it sends a callback to the flow.
• If the render fails, an error message is sent to YTAdmin.
• If the render succeeds, the flow proceeds to post-processing.

1. Generate Title & Description

• A second Mistral prompt generates a compelling title and description for YouTube.

1. Upload to YouTube

• The rendered video is retrieved from Creatomate.
• It’s uploaded to YouTube with the AI-generated metadata.

1. Final Update

• A success message is sent to YTAdmin, confirming upload completion.

---

Set Up Steps (Approx. 10–15 Minutes)Step 1: Set Up YTAdmin Bot

• Create a Telegram bot via BotFather and get your API token.
• Add this token in n8n's Telegram credentials and link to the "Receive Message from YTAdmin" trigger.

Step 2: Connect Your AI Providers

• Mistral: Add your API key under HTTP Request or AI Model nodes.
• OpenAI: Create an account at platform.openai.com and obtain an API key. Use it for both image generation and voiceover synthesis.

Step 3: Configure Audio File Storage with MongoDB via Custom API

• Receives the Base64 encoded audio data sent in the request body.
• Connects to the configured MongoDB instance (connection details are managed securely within the API- code below).
• Uses the MongoDB driver and GridFS to store the audio data.
• Returns the unique _id (ObjectId) of the stored file in GridFS as a response.
• This _id is crucial as it will be used in subsequent steps to generate the download URL for the audio file.
• My API code can be found here for reference: https://github.com/nanabrownsnr/YTAutomation.git

Step 4: Set Up Creatomate

• Create a Creatomate account, define your video templates, and retrieve your API key.
• Configure the HTTP request node to match your Creatomate payload requirements.

Step 5: Connect YouTube

• In n8n, add OAuth2 credentials for your YouTube account.
• Make sure your Google Cloud project has YouTube Data API enabled.

Step 6: Deploy and Test

• Send a message to YTAdmin and monitor the flow in n8n.
• Verify that content is generated, media is created, and the final video is rendered and uploaded.

---

Customization Options

1. Change the AI Prompts

• Modify the generation prompts to adjust tone, voice, or content type (e.g., news recaps, product videos, educational summaries).

1. Switch Messaging Platform

• Replace Telegram (YTAdmin) with Slack, Discord, or WhatsApp by swapping out the trigger and response nodes.

1. Add Subtitles or Effects

• Integrate Whisper or another speech-to-text tool to generate subtitles.
• Add overlay or transition effects in the Creatomate video payload.

1. Use Local File Storage Instead of MongoDB

• Swap out MongoDB upload http nodes with filesystem or S3-compatible storage.

1. Repurpose for Other Platforms

• Swap YouTube upload with TikTok, Instagram, or Vimeo endpoints for broader publishing.

---

Need Help or Want to Customize This Workflow? If you'd like assistance setting this up or adapting it for a different use case, feel free to reach out to me at [email protected]. I'm happy to help!