NotebookLM is adding a feature to generate short video overviews, with some reports indicating these videos are 60-second and vertical in format. The feature is said to be powered by Nano Banana 2 Lite, although one report mentions a "Nano Banana" without the "2 Lite" specification. It is unclear if the feature is fully released or still being tested, as one outlet mentions Google is testing a whiteboard animation format in NotebookLM.