Picture-in-Picture mode or shortly PiP is one of the best features of MacOS Sierra which just came out. It basically allows you to make a video smaller so you will be able to watch it when you are working on other apps.
On some websites such as Vimeo, you will already see a button for this feature but you won’t see the same button on YouTube or Netflix. However, most of us want to use this feature with YouTube; not with Vimeo.
There is actually a way to do this.
1 – Option click on the video
Assuming that you are already on YouTube and in the video that you want to watch in Picture-in-Picture mode, you need to option click on the video twice. First time, you will see YouTube Options and when you click for the second time, you will MacOS menu.
2 – Select “Enter Picture-in-Picture”
You will see an option called “Enter Picture-in-Picture”. After you click that, the video will be shrunk and you can be dragged to the corners.