Google NotebookLM Expands Video and Audio Overviews to 80 Languages

Google announced an expansion to NotebookLM that brings Video Overviews and upgraded Audio Overviews to more than 80 languages, including French, German, Spanish, and Japanese. The move makes visual and audio summaries useful for a much larger global audience.

What changed

Video Overviews, which let users convert notes, PDFs, and images into short video presentations, were previously available only in English. Google has now extended support to over 80 languages, so non-English speakers can generate video summaries in their preferred language.

Audio Overviews have also been improved. Previously non-English audio summaries were limited and concise; the update delivers more detailed non-English audio summaries while keeping a short-overview option for users who want quick highlights.

Why this matters

The update improves accessibility, training, and knowledge transfer across languages. Educators can create video briefs for students in local languages; product teams can share onboarding videos internally across regional offices; governments and NGOs can scale multilingual outreach and training.

There are practical gains beyond convenience: localized audiovisual summaries increase comprehension, help with retention, and reduce the friction of translating long documents manually. They also speed up content creation for distributed teams.

Examples in the real world

A university lecturer can turn a syllabus and slides into a Spanish-language video overview for international students. A customer support manager can generate Japanese audio briefings from product notes to speed up regional training. A policy team can summarize legal documents into shorter audio summaries for community outreach.

Google says the updates are available starting today and will roll out globally through the next week. Users can still choose a shorter highlight-style summary if they prefer a quick read or listen.

Considerations and next steps

Multilingual summaries are a big step, but organizations should validate accuracy, tone, and domain-specific terminology before wide deployment. Machine-generated audio and video still need checks for regulatory, legal, and cultural appropriateness in some sectors.

Measure outcomes: track learner comprehension, engagement with video/audio assets, and the rate at which summaries reduce time-to-knowledge. Combine quantitative metrics with spot-checks to ensure quality across languages.

QuarkyByte’s approach is to treat these features as operational tools: we help teams benchmark multilingual outputs, design localized workflows that scale, and set the guardrails needed for compliant, high-quality rollout. For organizations moving fast on global learning and knowledge management, the update to NotebookLM is a meaningful enabler.

Bottom line: Google’s expansion of NotebookLM’s Video and Audio Overviews to 80+ languages widens the usefulness of AI-generated audiovisual summaries. The feature is now more practical for multinational teams, educators, and public-facing organizations that need to reach diverse language audiences quickly.

Rollout is immediate and global over the coming week, so teams can begin testing and integrating multilingual summaries into their workflows right away.

Questions to ask now: Which languages matter to your users? What content types benefit most from audiovisual summaries? How will you validate and measure quality across languages? Answering these will determine how quickly your organization captures value from this update.

If you operate globally, consider piloting NotebookLM’s multilingual overviews on a high-impact use case—customer onboarding, training, or community outreach—and use measurable goals to decide broader adoption.