Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Mark doubtful passages in Markdown for editorial review.
Get Markdown from PDFs in your knowledge-base folder, with questionable pages called out for your editor to review.
Put a clean demo transcript on the draft for review.
Your help article draft gets a readable video transcript and demo link, without the timestamp clutter of raw captions.