Recently, Google LLC introduced new features for its AI-powered note-taking and research assistant, NotebookLM. Users can now directly upload YouTube video links and audio files, supplementing the existing support for text, PDFs, Google Docs, and web page content.

NotebookLM is an experimental tool from Google Labs that leverages the multimodal capabilities of the Gemini 1.5 large language model to enhance the efficiency of note-taking, idea organization, and extracting insights from source materials. With this update, the types of source materials that users can upload have expanded to include audio and video, although the total is still limited to 500,000 characters. Additionally, each notebook can contain up to 50 sources and 1,000 notes.

As NotebookLM's global access expanded during the summer, these new features will offer users more opportunities for note-taking, such as analyzing video papers and lectures. Furthermore, it can improve the efficiency of team projects and discussions by allowing the recording and uploading of audio from group discussions or team meetings, facilitating content sharing and analysis.

When users upload documents, NotebookLM automatically generates summaries and source material guides, including key topics and suggested questions, to help users delve deeper into subjects. The tool supports two types of notes: saved model-generated responses (from chat interactions or direct citations) and user-written notes. Saved responses can reference their source materials directly, enabling users to quickly locate context.

In addition, NotebookLM offers additional features such as generating study guides, short-answer questions, essay topics, FAQs, and glossaries. Earlier this month, Google introduced the Audio Overview feature for NotebookLM, allowing users to transform notes into audio discussions between two English AI voices, simulating podcast hosts delving into source materials.

Currently, Audio Overview is still in the experimental phase and has some known limitations, such as taking several minutes to process large notebooks and supporting only English. Sometimes it may produce inaccurate content. In the latest update, Google added a sharing feature to Audio Overview, enabling users to generate a public URL by clicking the share icon. This URL can be shared on web pages, social media, or via SMS with users who do not have a NotebookLM account.