In addition to all the other new features, macOS Mojave includes wallpapers that automatically change throughout the day
So far, the operating system contains only one such wallpaper with the image of a desert in which day is replaced by night.
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Change wallpaper by time of day
The new feature requires permission to use your location, as well as night mode, to determine when the sun rises and sets.
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MacOS has for many years had a feature that changes the wallpaper automatically every time you turn on your computer, or after certain periods of time.
However, she simply switches the different wallpapers from the collection, and does not adjust them to the time of day.
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How to test the change of wallpaper
Unfortunately, in words the effect of changing the wallpaper is difficult to describe. You need to see it yourself by choosing dynamic wallpapers in the desktop settings.
You can also understand the essence of their work atsite with preview macOS Mojave: Drag the slider left and right to experience a new effect.
With the change of wallpaper only specially made for the function of the wallpaper work.
How dynamic wallpapers are stored
MacOS Mojave has one changing wallpaper, andthey are called "Mojave (Dynamic)." Dynamic wallpapers are an addition to new regular wallpapers. This is a desert during the day, which is suitable for a light interface theme, and a night desert that looks great with a dark mode.
So what is the secret to dynamic wallpaper in Mojave?
They use the HEIF (.HEIC), which was presented last September along with iOS 11 and macOS High Sierra. You can find all the standard Apple wallpapers by opening the Go menu in Finder and choosing Go To Folder.
Enter the line below and clickEnter:
/ Library / Desktop Pictures
Mojave standard dynamic wallpapers weigh 114 megabytes.
For comparison, all other wallpapers of the new version are stored in JPG format and weigh about 10 megabytes. Let's see if Apple will provide an opportunity to create dynamic wallpapers on their own.
About HEIC
Apple must have taken some photosthe same place with a time interval, after which to make them stunning dynamic wallpaper. Someone already found out that they consist of as many as 16 layers. You can even download every single jpg file on github.
Also read: How to convert HEIF images to JPEG using Viewer on Mac
If you open dynamic wallpapers in HEIC format in the View program, you will see only one image, since the program does not support all HEIF functions.
It is not yet clear whether users will be able to create dynamic wallpapers on their own in the future, or whether they will have to wait until Apple decides to add new ones.
What about iPhone
iOS contains dynamic wallpapers since iOS 7, but they do not change depending on the time of day. They are simply animated, reacting to movements.
In addition, iOS has live wallpapers since 2015,which are essentially short animations that come to life when you click on the lock screen using 3D Touch. On the home screen, they look like ordinary wallpapers.