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Convert YouTube videos to audio summaries with Decodo, OpenAI & Telegram

AttaAtta
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2/3/2026
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Stop watching long videos, start listening to concise summaries.

This workflow transforms any YouTube video URL sent via Telegram into a high-quality, spoken audio summary (MP3) and a structured text overview. It acts as your personal AI research assistant, turning lengthy content into bite-sized audio files that you can consume on the go.

It leverages Decodo for robust transcript extraction, OpenAI for intelligent summarization, and for realistic text-to-speech generation.

✨ Features

  • Telegram-First Interface: Send links and receive audio directly in your chat app.
  • Smart Validation: Automatically checks if the link is a valid YouTube URL before processing to save API credits.
  • Multi-Language Support: Easily configure the output language (English, Spanish, German, etc.) via a simple Config node. The AI will translate and speak in this language.
  • Robust Error Handling: Gracefully handles videos with no captions/transcripts by notifying the user instead of breaking the workflow.
  • Structured Data Extraction: Uses AI to extract the Genre, Title, and Summary alongside the audio file.

⚙️ How it Works

  1. Trigger: You send a YouTube URL to your Telegram Bot.
  2. Validate: The workflow checks the URL pattern using Regex.
  3. Extract: Decodo scrapes the video page to retrieve the full transcript JSON.
  4. Process: A Code node flattens the complex JSON into a readable text format.
  5. Summarize: OpenAI (gpt-4o-mini) analyzes the text and writes a script optimized for listening.
  6. Speak: OpenAI converts the script into a high-definition MP3 file.
  7. Deliver: The bot replies with the Audio File and a formatted text summary including the genre tags and original link.

📥 Decodo Node Installation

The Decodo node is used in this workflow for fetching the YouTube Transcript.

  1. Find the Node: Click the + button in your n8n canvas.
  2. Search: Search for the Decodo node and select it.
  3. Credentials: When configuring the first Decodo node, use your API key (obtained with the 80% discount coupon).
  4. Setup: Open the Decodo (Fetch YouTube Transcript) node to ensure it is correctly targeting the YouTube service.

🎁 Exclusive Deal for n8n Users

To run this workflow, you require a robust scraping provider. We have secured a massive discount for Decodo users:

➕ How to Adapt the Template

This workflow is highly flexible and can be modified for various content tasks:

  • Change AI Model: Easily swap the OpenAI Chat Model node with an OpenAI or Anthropic (Claude) node without altering the core logic.
  • Create Long-Form Drafts: Modify the AI System Prompt to generate a full 1,000-word blog post draft or a set of social media updates instead of a short audio script.
  • Change Destination: Replace the Telegram nodes with Slack, Microsoft Teams, Email (Gmail/SMTP), or Discord to deliver the audio and summary to your preferred channel.
  • Create an Archive: Connect the successful output to a Google Sheets or Airtable node to keep a searchable archive of every video summary created.

Convert YouTube Videos to Audio Summaries with Decodó, OpenAI & Telegram

This n8n workflow automates the process of converting YouTube video links into concise audio summaries and delivering them via Telegram. It leverages AI to transcribe the video, summarize the content, and then synthesize an audio version of the summary.

What it does

  1. Listens for YouTube Links: Triggers when a new message is received in Telegram.
  2. Filters Messages: Checks if the incoming Telegram message contains a valid YouTube video URL.
  3. Extracts Video ID: If a YouTube URL is found, it extracts the video ID.
  4. Transcribes Audio: Uses OpenAI's Whisper model to transcribe the audio from the YouTube video.
  5. Summarizes Transcript: Employs an OpenAI Chat Model with a structured output parser to generate a concise summary of the transcription.
  6. Synthesizes Audio Summary: Uses OpenAI's Text-to-Speech (TTS) to convert the text summary into an audio file.
  7. Sends Audio Summary to Telegram: Posts the generated audio summary back to the Telegram chat.
  8. Handles Invalid Input: If the message does not contain a YouTube URL, it sends a predefined message back to the user.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • Telegram Bot: A Telegram bot token and chat ID.
  • OpenAI API Key: An API key for OpenAI, with access to Whisper (for transcription), Chat models (for summarization), and TTS (for audio synthesis).

Setup/Usage

  1. Import the workflow: Download the provided JSON and import it into your n8n instance.
  2. Configure Credentials:
    • Telegram: Set up your Telegram Bot API credential in n8n. You will need your bot token.
    • OpenAI: Set up your OpenAI API credential in n8n. You will need your OpenAI API key.
  3. Activate the workflow: Once configured, activate the workflow.
  4. Send YouTube Links to your Telegram Bot: Send a YouTube video link to your configured Telegram bot. The bot will then process the video and reply with an audio summary.

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