macOS Sierra: picture-in-picture so it works
What was previously only possible on the iPad, is now available on the Mac: Videos conveniently in a separate Player window. With Videos in iTunes and Quicktime or Vimeo, it is going easily.
- Play the desired Video in iTunes and Quicktime or Vimeo.
- In the Video control bar now you can see a small Icon to the play in the picture-in-picture function (see Screenshot).
- Now the Video plays in a small window on the screen.

macOS Sierra:PiP
macOS Sierra: PiP in Youtube
Thus, a Video can be played in a PiP, must be part of the website operator, the Video with a specific Tag. With Vimeo this is not already the case, in the case of YouTube yet. However, you can use the function in a roundabout way via YouTube Videos.
- Click with the right mouse button twice in quick succession on the Video.
- It is a context-menu in the "picture-in-picture" find open open.
- You select this item, also played the YouTube Video with the picture-in-picture function.
With macOS Sierra your Mac, Siri can now also. The main Siri commands for the new operating system we have another practice tip for you.