By default, Picture-in-Picture videos on macOS Sierra are docked in one of the four corners of your Mac’s display. If you try to move the window elsewhere, it will quickly snap back to one of the four default corners. This is very similar to how Picture-in-Picture mode works on the iPad.
But it’s also possible to dock videos anywhere on your display by using a handy keyboard combination. Watch our brief hands-on video for the quick how-to. more…Filed under: Apple