Fact · Transcription
Google announced in September 2024 that users could add public YouTube URLs and audio files to a NotebookLM notebook.
Checked against its source on October 17, 2026
In the source's own words
“You can now add public YouTube URLs and audio files to your notebook for an even deeper understanding of your sources.”
NotebookLM adds audio and YouTube support, plus easier sharing of Audio Overviews, Raiza Martin, Google Blog, 2024, Opening paragraph.
Open the original- What it measures
- Audio files were added alongside PDFs, Google Docs, Slides and websites as source types.
- What it does not show
- This is a 2024 launch announcement. The post gives no size or format limits, so check Google's current NotebookLM help pages.