Generate YouTube chapter timestamps and community posts using WayinVideo and GPT-4o-mini

Description

Submit any YouTube tutorial or how-to video URL along with your section search query and the workflow finds all the key moments automatically. WayinVideo's Find Moments API scans the full video and returns up to 15 section timestamps, which are then sorted chronologically and sent to GPT-4o-mini in one call to complete three tasks: generate clean chapter timestamps starting with 0:00, write a 3–4 sentence video description block, and write a 100–150 word YouTube Community post with the full timestamp list embedded. Everything is saved as one row in Google Sheets with Status set to Ready — ready to copy and paste directly into YouTube. Built for YouTube creators, educators, and content teams who publish long tutorial videos and want chapter timestamps and a Community post generated automatically without manual scrubbing.

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What This Workflow Does

- Finds up to 15 section moments per video — WayinVideo's Find Moments API scans the full tutorial based on your search query and returns timestamped moments with titles and descriptions - Sorts all moments chronologically — All returned moments are sorted by start time before being sent to GPT so the chapter list is always in the correct viewing order - Generates formatted chapter timestamps — GPT writes clean 3–6 word chapter titles for every moment with exact MM:SS values, always starting with 0:00 Introduction - Writes a video description block — A 3–4 sentence description introduces the video, mentions what viewers will learn, and includes the video URL - Creates a YouTube Community post with timestamps embedded — A 100–150 word post hooks the audience, highlights 2–3 things they will learn, embeds the full chapter list, and ends with a CTA and hashtags - Saves everything in one Google Sheets row — Formatted timestamps, description block, Community post, hashtags, total chapter count, total moments found, and estimated duration are all in one row per video - Polls automatically until moments are ready — Waits 90 seconds then checks every 30 seconds until WayinVideo finishes scanning the video

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Setup Requirements

Tools Needed - n8n instance (self-hosted or cloud) - WayinVideo account with API access - OpenAI account with GPT-4o-mini API access - Google Sheets (one sheet with a tab named Timestamp Library)