Asking an AI assistant across your whole meeting history ("what did customers say about pricing this quarter?") needs the transcripts as files first. tl;dv's help center says it doesn't currently support bulk transcript downloads, so the first step is an export.
Google's help center now calls the product Gemini Notebook. Per its sources article and FAQ (checked Oct 2026):
So 300 single-meeting files won't fit in a free notebook, but a few combined files will. As a rough estimate (ours, not Google's), conversational speech runs about 130 to 160 words per minute, so one 500,000-word source holds very roughly 50 or more hours of meetings.
all-transcripts.txt option. MinuteHaul splits it into parts of about 400,000 words, under the per-source limit.index.csv as a source for date and participant lookups.Pre-order MinuteHaul: $29 one-time or try it free on your 10 most recent meetings
Pre-order: the exporter ships within 7 days of your purchase. If it is not delivered to you in that time, you get an automatic full refund. Requires a paid tl;dv plan with API access: per tl;dv's API docs, the meeting organizer must be on Pro, Business or Enterprise.
Does NotebookLM accept text or Markdown transcripts? Yes. Google's help center lists TXT, Markdown, CSV, PDF and DOCX among supported uploads.
How many sources can a notebook have? 50 on the free plan; paid plans list 100, 300, 500 or 600 per notebook.
How big can one source be? Up to 500,000 words or 200 MB per uploaded file.
Is MinuteHaul affiliated with Google or tl;dv? No. It is independent.
Last checked: Oct 17, 2026. tl;dv features and plans change; verify against tl;dv's own help center before relying on details here.