Thanks for that link. The article links to another article with more background: https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-

Thanks for that link. The article links to another article with more background: https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details/ https://blog.cloudflare.com/lavarand-in-production-the-nitty... Which answers all your questions. Tl;dr: the lava feed is only an additional entropy source, it's not like they generate keys directly from the video feed.