Picture-in-Picture Playback. Continue watching videos while you browse other chats or even other apps.
Tap or click the PiP icon in the media viewer on any app to switch to picture-in-picture mode, and pinch or drag to moveandresize the player window. To close the window, drag it off screen or tap the ⓧ.
On iOS, drag the player to the side of your screen to hide the video and keep listening to its audio.