If you've come across the URL rr4---sn-bg5hxxo2ivox-q5jr.googlevideo.com and wondered whether it's legitimate, the short answer is yes. This is not a standalone website or business — it's a server in Google's content delivery network (CDN) used to stream video from YouTube and other Google services. The 404 error you see means the specific path you requested doesn't exist, which is normal for backend infrastructure.
Because it's a Google-owned subdomain, the identity is rock solid. The security setup is modern, with a valid TLS certificate and no blacklist warnings. The site blocks search engine crawlers, which is standard for CDN endpoints that aren't meant to be indexed. You don't need to worry about privacy policies or contact info here — this server doesn't interact with users directly.
In short, this is not a site you need to evaluate for trustworthiness in the usual sense. It's a piece of internet plumbing that belongs to one of the most reputable companies in the world. If you saw this URL in a browser or a link, it's safe to ignore or treat as a normal part of accessing Google video content.