If you log in, the video will immediately slow down until it finally freezes. If the screen goes black, press a key on the keyboard and you should be presented with the login window with the video in the background. This goes over Apple logo -> hibernation. Once you've downloaded one of the new aerial screensavers and selected it to use in sleep mode, put your Mac to sleep to try it out. Try Mac screen saver by triggering hibernation Download progress is shown with this circle indicator. The videos are not pre-installed and must be downloaded first. There are aerial photos from different categories, which you can also display mixed. In the wallpaper settings there is the Aerials selection.
Click on the item in the list on the left background image.Click on the top left of the menu bar Apple logo ().