You can move a video playing in Safari to Picture in Picture. Here’s how:
° Launch Safari.
° While watching a video in Viewer, hover your mouse over the video to make the playback controls appear. Then click the icon to the far right with two arrows pointing right. (Be sure not to mistake this for the fast forward control. ) Then choose Picture in Picture.
° An alternate way of entering Picture in Picture is to simply click another open window on your Mac.
