YouTube to Blog & Tweet Thread with n8n, Supadata, OpenAI

Turn any YouTube video into a ready-to-publish blog post and a 5–8 tweet thread—automatically—using n8n, Supadata, and OpenAI

This n8n automation takes a YouTube URL from an n8n form, fetches the video transcript via Supadata (with async polling for longer videos), then uses OpenAI to generate a standalone 600–900 word blog post and a numbered 5–8 tweet thread from the same transcript.

What this workflow does

• Collects a YouTube URL using an n8n form trigger.
• Requests the transcript from Supadata using the Supadata Transcript API and continues even if the initial request returns an error.
• Handles async transcript jobs: when Supadata returns an async job ID, it waits briefly and polls until the transcript job completes or fails.
• Prepares transcript input: extracts transcript text (or an error message) and truncates it to 8,000 characters.
• Generates content with OpenAI:
  • A blog post (about 600–900 words) including a title, sections, and a closing takeaway.
  • A numbered tweet thread of 5–8 tweets, with each tweet kept under 280 characters.

Use cases

• Repurpose YouTube content into a blog workflow for SaaS marketing teams.
• Create consistent social follow-ups by converting video transcripts into tweet threads for LinkedIn/X-style publishing.
• Automation engineers and n8n users testing end-to-end “video → transcript → multi-format copy” pipelines.

Technical details

• Integrations: Supadata Transcript API (with HTTP header auth using x-api-key) and OpenAI.
• n8n nodes used: if, code, wait, sticky note, form trigger, http request.
• Configuration: add Supadata credentials (HTTP Header Auth) and OpenAI credentials for the OpenAI Chat Model node; review and adjust prompts for your preferred tone and formatting.