Building a Youtube Automation With n8n Assistant
🔗 Link do vídeo: https://www.youtube.com/watch?v=grWtJae41Vs
🆔 ID do vídeo: grWtJae41Vs
📅 Publicado em: 2026-08-26T13:11:10Z
📺 Canal: n8n
⏱️ Duração (ISO): PT10M20S
⏱️ Duração formatada: 00:10:20
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A dive into one prompt that builds a YouTube thumbnail repurposing workflow in n8n. @leonardogrig describes what he wants in plain English, and the AI Assistant plans the nodes, writes the Google Drive lookups, wires up the AI agent, and tests its own run.
Full prompt used in this video: https://go.n8n.io/hxeJxT
Setting up self-hosted n8n with the AI Assistant is covered in the previous video: https://youtu.be/t5RBVTby9EU
The workflow takes a request like "thumbnail for leo-2, use reference 253, text: this is a test" from a form, finds the matching photo and reference thumbnail in Google Drive, and generates two YouTube-sized variations using GPT Image 2 through OpenRouter. A toggle controls whether the output copies the reference photo's pose or keeps the person's own.
On repurposing responsibly: the point here is to study what makes a thumbnail work, composition, lighting, framing, and apply that to your own face and your own branding. Copying someone else's thumbnail wholesale is a bad idea both creatively and legally. Use references you own or have permission to use, and treat the output as a starting point you edit rather than something you ship as-is.
This is also a building block rather than a finished system. The obvious next steps are pulling reference thumbnails from your own top performers automatically, running variations through a scoring step, or triggering the whole thing from a video upload instead of a form.
This runs on a local self-hosted n8n instance with Kimi K3 as the AI Assistant model. The Assistant is in preview and it does stall mid-build. Sending "continue" picks it back up, and switching models clears most repeated errors.
Links:
Self-hosting n8n + AI Assistant setup: https://go.n8n.io/8Ekpmp
AI Assistant docs: https://go.n8n.io/KOJ67D
Set up AI Assistant on self hosted: https://go.n8n.io/OhuoQ1
Google Drive credentials: https://go.n8n.io/QgAYmt
Get help: https://go.n8n.io/XHt4FG
Time Stamps:
00:00 – The finished workflow
01:05 – The prompt explained
04:42 – Google Drive structure
05:12 – Google Cloud credentials
07:06 – Back to assistant
08:46 – OpenRouter credential setup
09:00 – Live test results
09:52 – Fixing model errors