The video is about how to use voice over in Safari for Mac OS X. To use Voice over it has to be enabled first. It can be used to read the entire html content on web page using short cut control + option + shift + Down Arrow. To move between different items on the web page use Control + Option + left or right arrows. To click any link use Control + Option + Space bar. To go back in the browser use Command + [. To stop interacting with HTML content use Control + Option + Shift + Up Arrow. After stopping html interaction we can use voice over to interact with tool bar, menu bar etc using the normal keyboard shortcuts.