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Telegram AI Content Engine: Text, Image & Voice to Social Posts

This n8n workflow uses AI to transform text, images, or voice notes sent via Telegram into fully formatted, multi-platform social media posts — automatically.

It acts as an on-demand content engine: you simply send any type of content to Telegram, and the workflow intelligently processes it, generates optimized captions (and titles where needed), and publishes it across platforms like X (Twitter), LinkedIn, Instagram, Facebook, Threads, and YouTube.

Use cases

This workflow is ideal for creators, founders, and social media managers who want a single input → multi-platform output system.

It’s especially useful if you:

  • Capture ideas as voice notes on the go and want them turned into content
  • Share images or screenshots and want instant captions + posting
  • Write quick text thoughts and distribute them everywhere
  • Want a mobile-first content workflow without opening multiple apps
  • Need consistent, AI-assisted posting across multiple platforms

Good to know

  • This workflow uses multiple AI services:
    • OpenAI (for transcription and image analysis)
    • OpenRouter (for caption and title generation)
  • The Json2Video API is used to convert voice notes into video content.
  • The Blotato node is required for publishing and needs a separate account.
  • AI usage and video rendering may incur small costs depending on usage.
  • Voice-to-video processing includes a retry system and may take up to a few minutes.

How it works

This workflow dynamically adapts based on the type of content sent via Telegram.

1. Content Detection (Smart Routing)

  • A Telegram Trigger listens for incoming messages.
  • A Switch node detects the content type:
    • Text
    • Image
    • Voice note (audio)
    • Document

Each type follows a different processing path.

2. Text Posting Flow

  • If plain text is received:
    • The text is extracted and used directly as post content
    • The workflow posts it to:
      • X (Twitter)
      • LinkedIn
      • Threads

This is the fastest path for quick idea sharing.

3. Image Posting Flow

  • If an image is sent:
    • The image is retrieved from Telegram
    • If a caption is included → it is used
    • If no caption → AI analyzes the image and generates one
    • The image is uploaded to Blotato

The workflow then posts to:

  • Instagram
  • Facebook
  • LinkedIn
  • X (Twitter)
  • Threads

This enables instant visual content distribution with AI-generated engagement captions.

4. Voice → Video → Post Flow

This is the most advanced part of the workflow:

  • The voice note is retrieved and converted into a public URL
  • OpenAI transcribes the audio into text
  • AI generates:
    • A caption optimized for engagement
    • A YouTube Shorts title
  • The audio is converted into a video with branding using Json2Video
  • The workflow checks rendering status with retries and timeout handling

Once ready:

  • The video is uploaded
  • It is posted to:
    • Instagram
    • Facebook
    • YouTube (with AI-generated title)

This turns raw thoughts into polished video content automatically.

5. Post Confirmation

  • Each platform returns a posting status
  • Merge nodes ensure all posts complete

  • A confirmation message is sent back via Telegram:

    “✅ Posted successfully! Your content has been published to all platforms.”

  • If video rendering fails or times out, an error message is sent instead

How to use

  • Send any of the following to your Telegram bot:
    • A text message
    • An image (with or without caption)
    • A voice note
  • The workflow automatically detects the format and processes it
  • Wait for the confirmation message once posting is complete

Tips:

  • Keep voice notes clear for better transcription
  • Use captions when you want full control over messaging
  • Test each content type individually before scaling

Requirements

  • A Telegram Bot connected to n8n
  • A Blotato account with connected platforms:
    • X (Twitter)
    • LinkedIn
    • Instagram
    • Facebook
    • Threads
    • YouTube
  • An OpenAI account (for transcription + image analysis)
  • An OpenRouter account (for AI caption/title generation)
  • A Json2Video account (for voice-to-video conversion)

Customising this workflow

You can extend this workflow in powerful ways:

  • Customize AI prompts for different tones (e.g., sales, educational, storytelling)
  • Add platform-specific captions instead of one universal message
  • Introduce a review/approval step before posting
  • Store all generated content in a database or Google Sheets
  • Add automatic hashtags or keyword optimization
  • Schedule posts instead of publishing instantly
  • Add support for long-form content or blog publishing