YouTube is an online video platform owned by Google. It is the second most-visited website in the world. In 2019, more than 500 hours of video content were uploaded to YouTube servers every minute. YouTube provides several ways to watch videos, including the website, the mobile apps, and permitting other websites to embed them. Available content includes video clips, TV show clips, music videos, short and documentary films, audio recordings, movie trailers, live streams, video blogs, and short original videos. Most content is generated by individuals, but media corporations also publish videos. Besides watching and uploading, registered users can comment on videos, rate them, create playlists, and subscribe to other users.