Summarize YouTube video transcripts in Discord with Gemini and Supabase

YouTube Video Transcript Summarizer — Discord Bot

> Paste a YouTube URL into a Discord channel and this workflow automatically extracts the transcript, uses an LLM to generate a concise summary, and stores everything in a database — all in seconds.

> Self-hosted n8n only. This workflow uses the Execute Command node to run yt-dlp inside the n8n container. This requires shell access, which is only available on self-hosted instances (Docker, VPS, etc.) — it will not work on n8n Cloud.

[Import this workflow into n8n](https://raw.githubusercontent.com/trendai-au-lab/n8n-workflow/main/workflows/youtube-video-summarizer-discord/workflow.json)

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Prerequisites

| Tool | Purpose | |------|---------| | Discord Bot | Listens for messages and sends replies | | yt-dlp | Downloads subtitles and video metadata (must be installed in the n8n container) | | Google Gemini API | Summarizes video transcripts (Gemini 2.5 Flash) | | Supabase | Stores video data and run logs |

Credentials