NotebookLM's Short Video Overviews create brief, vertical videos from source material but exclusively in English. This format is suitable for quick English-language recaps or internal briefings. For content requiring multiple languages, businesses must opt for NotebookLM's Explainer Video Overviews. This distinction is crucial for planning content effectively, whether for internal communication, education, or customer-facing materials. Google's documentation clearly separates these video formats, confirming Short Video Overviews are English-only while Explainer Video Overviews offer multilingual support. Teams should avoid conflating broader language expansions in other NotebookLM features with the limitations of Short Video Overviews. To ensure accurate localization, users need to verify the language options for their chosen video format. Planning involves identifying audience language needs and selecting the appropriate NotebookLM feature accordingly. Utilizing Short Video Overviews for non-English audiences is not recommended. Explainer Video Overviews are the documented solution for multilingual video production from notebook sources.