What’s the best YouTube video summarizer right now?

NotebookLM is a research-oriented AI tool launched by Google, acting as a reliable YouTube video summarizer, but it does not support direct analysis of URLs because it only supports manually uploaded subtitle files.

The software can generate structured summaries and accompanying FAQs in a single step, but to use this feature, you must first export the video’s subtitle file separately.

First, download the complete subtitle file for the target video from a video platform or subtitle tool. Log in to the software and create a blank notebook, then upload the saved subtitle file as source material.

Enter the following request in the AI dialog box:

• Summarize this video into key points that include timestamps and chapter titles. Review the structured summary, key points, and segmented outline generated by the software, and copy or export the content for your records.

Once the analysis is complete, you can continue to ask follow-up questions about the details in the uploaded subtitle file.

The software cannot generate video summaries directly by clicking a URL, so this practical YouTube video summarizer is only suitable for users willing to spend extra time preparing the subtitle file.

If you prefer not to use the summary tool in a browser extension, you can try this method. This requires additional manual preparation steps, so please carefully weigh the pros and cons.