This template starts when you POST a YouTube video URL to a Latenode webhook. YouTube returns the captions, JavaScript strips timestamps, and ChatGPT writes a structured summary that Telegram sends and Supabase stores.
Connect YouTube, Telegram, and Supabase, then point the webhook at the form or app that sends the URL. ChatGPT is a Latenode AI step, so you do not paste an OpenAI key; when captions are missing, transcribe the soundtrack with Latenode speech-to-text.
Latenode bills workflow runtime in CPU seconds. The first 10,000 CPU seconds are free each month, then usage follows pay-as-you-go CPU-second pricing. Plug-and-Play (PnP) AI nodes are billed separately—each PnP token is $1 USD, charged pay-as-you-go at vendor cost plus a small processing fee, with no API keys required.
Full pricing — how CPU seconds work →Workflow preview
The scenario starts when a form or app POSTs a YouTube video URL to your webhook.
YouTube returns the subtitle track. JavaScript strips timestamps. When captions are missing, transcribe the soundtrack with Latenode speech-to-text.
ChatGPT reads the text and returns key topics and takeaways.
Telegram sends the summary to the chat you choose.
Supabase writes a row with the video URL, title if you fetched it, and the summary.
Add a webhook trigger and copy its URL. Point your form or app at that URL and send the YouTube video URL.
Add a YouTube connection that can read captions. Put the Telegram bot token on the Telegram connection. Put the Supabase URL and service key on the Supabase connection.
Get the subtitles for the video id from the webhook URL. Strip timestamps in JavaScript. Send the transcript to ChatGPT for topics and takeaways. ChatGPT is a Latenode AI step, so you do not paste an OpenAI key.
Send the summary as a Telegram text message. Create a Supabase row with the video URL and summary. POST a public video that has captions for the first test.
FAQ
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