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. --- 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 --- 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) Credentials Required - WayinVideo API key (pasted into 2. WayinVideo — Submit Find Moments and 4. WayinVideo — Get Moments Results) - OpenAI API key - Google Sheets OAuth2 > ⚠️ WayinVideo API key appears in 2 steps — replace YOURWAYINVIDEOAPIKEY in both 2. WayinVideo — Submit Find Moments and 4. WayinVideo — Get Moments Results. Missing either one will cause the workflow to fail. Estimated Setup Time: 15–20 minutes --- Step-by-Step Setup 1. Import the workflow — Open n8n → Workflows → Import from JSON → paste the workflow JSON → click Import 2. Get your WayinVideo API key — Log in to your WayinVideo account → go to Account Settings → copy your API key 3. Add your WayinVideo API key to node 2 — Open node 2. WayinVideo — Submit Find Moments → find the Authorization header value Bearer YOURWAYINVIDEOAPIKEY → replace YOURWAYINVIDEOAPIKEY with your actual key 4. Add your WayinVideo API key to node 4 — Open node 4. WayinVideo — Get Moments Results → find the same Authorization header → replace YOURWAYINVIDEOAPIKEY with the same key 5. Connect OpenAI — Open node 9. OpenAI — GPT-4o-mini Model → click the credential dropdown → add your OpenAI API key → test the connection 6. Create your Google Sheet tab — Open your Google Sheet → add a tab named exactly Timestamp Library → add these 13 column headers in row 1: Video URL, Video Title, Channel Name, Video Category, Total Chapters, Total Moments Found, Video Duration (min), Formatted Timestamps, Video Description Block, Community Post, Hashtags, Generated On, Status 7. Get your Google Sheet ID — Open your Google Sheet in a browser → copy the string between /d/ and /edit in the URL — this is your Sheet ID 8. Connect Google