First video posted to YouTubeIt took a 19-second video that consisted of a young guy talking about elephants at the zoo that kicked off a revolution that changed the way the world creates and digests video content online.

That revolution was YouTube, which officially kicked off with a video post titled, "Me at the zoo," on April 23, 2005.

While the domain name, Youtube.com, was registered on February 14, 2005, the video phenomenon kicked off five years ago today when Yakov Lapitsky posted footage of one of YouTube’s founders, Jawed Karim, at the San Diego Zoo, talking about elephants.