Pop-out player (or picture-in-picture, whatevs) for i3. Just slap in in the config and watch it do the magic. (For now works only on 1920x1080 xd)

i3-popout.config

# Pop-out player: 
# Press mod+PageUp to pop out the current window: float it, resize it, stick it.
# Press mod+Shift+PageUp to enter edit mode.

bindsym $mod+Prior fullscreen disable, floating enable, resize set 576 324, sticky enable, move window to position 1322 735
bindsym $mod+Shift+Prior mode "$mode_popout"

set $mode_popout Pop-out player: (k) lower left, (l) lower right, (i) upper left, (o) upper right
mode "$mode_popout" {
        # Change position
        bindsym k move window to position 20 735
        bindsym l move window to position 1322 735
        bindsym o move window to position 1322 50
        bindsym i move window to position 20 50
        
        # Exit pop-out edit
        bindsym Return mode "default"
        bindsym Escape mode "default"
        bindsym $mod+Shift+Prior mode "default"
}