Can I use AI to summarize long YouTube videos?

Yes, and there are a few different ways to do it, depending on how much effort you want to put in. The quickest method is to use a dedicated AI summarizer tool. You paste the YouTube link into something like Glasp, Eightify, or the paid version of ChatGPT with browsing enabled, and it spits out a summary in seconds. These tools usually read the auto-generated transcript and condense it. It's fast. It's also imperfect. For a more reliable summary, I copy the transcript myself. Under most YouTube videos, you can click the '...' button, then 'Show transcript.' I copy that raw text and paste it into Claude or ChatGPT with a prompt like: 'Summarize this transcript in 5 bullet points, focusing on actionable advice.' This manual method gives you more control. The AI isn't guessing based on a link; it's reading the exact words. Here's a concrete example. I recently watched a 90-minute lecture on how large language models handle memory. The auto-summarizer tool gave me a vague overview that missed the key distinction between fine-tuning and in-context learning. When I pasted the transcript directly and asked for that specific focus, the summary nailed it. The tip here is to always tell the AI *what kind* of summary you want. Don't just say 'summarize this.' Ask for 'a list of key takeaways for a beginner' or 'a detailed outline of the main argument.' The generic request gets a generic result. One limitation to know: if the video is heavily visual, like a woodworking tutorial, the transcript alone won't capture the essential demonstrations. The summary will miss the point. For those, you still have to watch the video.