I'm far from an AI expert... I just use available AI models, and the little knowledge I have to get what I want. Summarizing stuff with AI isn't very hard. There are many ways to get YouTube transcripts amd you could get the same summaries if you passed my prompt, (link below,) to ChatGPT.
Though I'm using a code to automate the process.
Here's the old code for it. I only did some incremental changes to the code and prompt since I posted this article: https://inleo.io/@ahmadmanga/devlog-youtube-transcript-and-summary-python-code-fuu