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Convert YouTube videos into SEO blog posts using WayinVideo and GPT-4o-mini

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Created by: isaWOW || isawow
isaWOW

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Last update 10 hours ago

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Description

Automatically convert any video URL into a fully structured, publish-ready SEO blog post using Wayin AI transcription, GPT-4o-mini, and Google Sheets — zero manual writing required.

What This Workflow Does

This workflow takes a single video URL and does everything for you. It transcribes the video using WayinVideo — a powerful multilingual video transcription API that accurately converts spoken content into clean, structured text — then passes that transcript to an AI Agent that writes a complete SEO blog post with title, meta description, slug, sections, FAQs, key takeaways, and tags. The final output is saved directly as a draft row in Google Sheets, ready for review and publishing.

Perfect for content marketers, YouTubers, agencies, and SEO teams who want to repurpose video content at scale without touching a keyboard.

Key Features

AI-powered transcription via Wayin: Uses the WayinVideo API to transcribe any video URL into clean, timestamped text segments with word count and duration metadata — supporting multilingual content.

Smart polling loop: Automatically polls Wayin every 5 seconds until transcription is complete — no manual waiting or webhook setup needed.

Structured SEO output: GPT-4o-mini generates a complete blog post with H2 sections (300+ words each), meta description (155 chars), URL slug, focus keyword, secondary keywords, FAQs, and a CTA conclusion.

Strict JSON schema enforcement: A Structured Output Parser validates every AI response — no broken outputs, no missing fields.

Google Sheets auto-logging: Every blog post is instantly saved as a draft row with date, video URL, word count, read time, tags, and status.

Webhook-triggered: Works as part of any larger pipeline — trigger it from Make, Zapier, or your own frontend.

How It Works

  1. Receive Video URL — Webhook accepts a POST request with {"url": "your-video-link"}
  2. Submit Transcription — Wayin — Sends the video URL to WayinVideo API to start English transcription job
  3. Poll Transcription Status — Fetches job status using the transcription ID every 5 seconds
  4. Wait 5 Seconds — Pauses execution between each poll attempt to avoid rate limits
  5. Is Transcription Complete? — IF status = SUCCEEDED → move forward, ELSE → re-poll
  6. Process Transcript Data — Joins all text segments, calculates word count and video duration
  7. Generate SEO Blog Post — AI Agent (GPT-4o-mini) writes the full structured blog post
  8. Parse Blog JSON Output — Enforces strict JSON schema and auto-fixes any format issues
  9. Save to Google Sheets — Appends all blog fields as a new draft row
  10. Return Success Response — Sends confirmation back to the webhook caller

Setup Requirements

Tools you'll need:

  • Active n8n instance (self-hosted or n8n Cloud)
  • WayinVideo account + API key (for video transcription)
  • OpenAI API key (GPT-4o-mini for blog generation)
  • Google Sheets with OAuth access (for draft storage)

Estimated setup time: 10–15 minutes

Configuration Steps

1. Add credentials in n8n:

  • OpenAI API key
  • Google Sheets OAuth API

2. Add your WayinVideo API Key:

  • Open Submit Transcription — Wayin node → replace YOUR_WAYIN_API_KEY in the Authorization header
  • Open Poll Transcription Status node → replace YOUR_WAYIN_API_KEY in the Authorization header

3. Set up your Google Sheet:
Create a sheet with these exact column headers:

Date | Video URL | SEO Title | Slug | Focus Keyword | Meta Description | Secondary Keywords | Read Time | Tags | Word Count | Duration (min) | Status

4. Update Sheet Document ID:

  • Open Save to Google Sheets node
  • Replace YOUR_GOOGLE_SHEET_DOCUMENT_ID with your actual Sheet ID (found in the Google Sheet URL)

5. Test the workflow:

  • Activate the workflow
  • Send a POST request to your webhook URL:
POST https://your-n8n-domain/webhook/43129e0a-...
Body: {"url": "https://youtube.com/watch?v=example"}
  • Check your Google Sheet for the new draft row

Use Cases

Content marketers: Repurpose every YouTube video, webinar, or podcast episode into an SEO blog post automatically — 10x your content output without extra writing.

SEO agencies: Generate first-draft blog posts for clients from recorded calls, demos, or training videos in minutes.

Course creators: Turn every lesson or tutorial video into a standalone blog post to drive organic search traffic.

YouTubers & podcasters: Build a content library of written posts from existing video content with zero extra effort.

Customization Options

Change the AI model: Replace gpt-4o-mini with gpt-4o or gpt-4-turbo in both OpenAI nodes for higher quality output on complex topics.

Add WordPress publishing: Connect a WordPress REST API node after Save to Google Sheets to auto-publish instead of saving as draft.

Change output language: Modify the WayinVideo API target_lang parameter and GPT system prompt to generate blog posts in any language.

Adjust blog structure: Edit the system prompt in Generate SEO Blog Post to change section count, word targets, tone, or add custom fields like author bio or schema markup.

Add Slack/email notifications: Insert a Slack or Gmail node after Return Success Response to notify your team when a new draft is ready.

Troubleshooting

Transcription stuck in polling loop: Check your WayinVideo API key is valid and the video URL is publicly accessible. Private or age-restricted videos may fail.

AI output missing fields: The Structured Output Parser auto-fixes most issues. If errors persist, add explicit field instructions to the GPT system prompt.

Google Sheets not updating: Verify OAuth credentials are connected and the Sheet Document ID is correct (not the full URL, just the ID string between /d/ and /edit).

Webhook not triggering: Make sure the workflow is activated (toggle ON) before sending test requests. Test mode webhooks use a different URL than production.

Resources

Support

Need help setting up or want a custom version built for your use case?

📧 Email: [email protected]
🌐 Website: https://isawow.com/