A VPN creates an encrypted tunnel from your device to a remote server. All your internet traffic flows through that tunnel. From the outside, you appear to be in the VPN's location; from the website's perspective, the VPN's IP is making the request.
For YouTube: a VPN set to a country where a geo-blocked video is licensed lets you watch the video. Same mechanism as a proxy from that country, but VPN is system-wide (every app uses it) and usually paid with consumer subscriptions.
For downloading specifically, VPNs work for playback-level access (loading the video page, watching it) but the actual download depends on whether the downloader you use also routes through the VPN. Browser-based downloaders (VidPickr) inherit the VPN automatically; server-side downloaders run on their own infrastructure and don't see your VPN setting.
Common questions
Does VPN slow down YouTube?
Is using a VPN to bypass YouTube geo-blocks legal?
Related terms
Proxy (HTTP / SOCKS)
A proxy is an intermediary server that forwards your requests to the target — making the target see the proxy's IP instead of yours.
Geo-block (region restriction)
A geo-block is a server-side restriction that refuses to serve content to viewers based on their IP address's country.
IP fingerprinting
IP fingerprinting is the practice of evaluating an IP address against its history, ASN, country, type (residential vs datacenter), and behavioral patterns to decide how to treat requests.
VidPickr is a free, browser-based YouTube downloader. Every term in this glossary either describes how YouTube delivers video or why your downloads behave the way they do. Try the downloader →