NotebookLM offers the video summary of the current note, like a slideshow with voice.

The video summary is available in the “Studio” section and can be generated with all or only some of the sources selected in the sources column.

Instructions can be provided with the “customize” button available via the three dots of the “video summary” button.
Abstracts are announced only in English, they are possible in French by adding “hosts only speak French”.

Export mp4, share url.

During the tests, 5 free summaries are offered per day.

Source-based testing (Framework for the use of AI in education):

Test from 9 sources: