Convert YouTube Videos to Audio Summaries with Decodo, Gemini 2.5 & Telegram

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, Google Gemini for intelligent summarization, and OpenAI 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: Google Gemini (2.5 Flash) 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.

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➕ How to Adapt the Template

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

• Change AI Model: Easily swap the Google Gemini 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.