- #Mac os sierra wallpaper macbook how to#
- #Mac os sierra wallpaper macbook upgrade#
- #Mac os sierra wallpaper macbook windows 10#
- #Mac os sierra wallpaper macbook plus#
- #Mac os sierra wallpaper macbook mac#
#Mac os sierra wallpaper macbook windows 10#
So I booted into a Windows 10 virtual machine, downloaded GIMP, and then discovered that the compiled build for 2.10.2 for Windows accidentally doesn't include the HEIF plugin. But unfortunately the latest version is compiled for macOS. Next, I found that GIMP in it's latest version (2.10.2) added native HEIF support, including support for multiple images. I was then able to dump all the individual pieces (with this command:) for i in `seq 977\` do mp4box -dump-item $i:path=mojave_dynamic_$i.hevc mojave_dynamic.heic done`īut then had what I think were malformed individual HEVC image files, because I couldn't get any program to open them.
#Mac os sierra wallpaper macbook how to#
I'm particularly interested in this (maybe Apple will document it and make it available for developers?) Particularly the apple_desktop:solar attribute is interesting (I'm guessing it contains the information on which image represents which time of day?) but I don't know what the encoding is for the value, or how to decode it.
If you got the HEIC container/file correct, I don't see why macOS 10.14 wouldn't support 3rd party dynamic wallpapers. I'm guessing this XMP will be helpful to anyone trying to reverse engineer the format, so that people can make their own dynamic wallpapers.
#Mac os sierra wallpaper macbook plus#
heic file actually contained 977 different parts: 16 images, each made up of 60 individual tiles and 1 grid reference, plus one XMP metadata file. Running this command: mp4box -info mojave_dynamic.heic revealed the. I then found MP4box (part of GPAC) which I also couldn't get to export the images-but it provided loads of helpful information. Next I checked out MagickStudio which has HEIF support, but proved to be a dead end when trying to work with multi-image HEIFs. While I could get it to display the first image stored in the file, getting it to display any of the other images proved unfruitful. I was having trouble compiling their tools, but I noticed they also provided a Javascript version of their HEIF reader (used on the example page to load the images.) I took that (actually just took the whole example page) and reverse engineered it to display the mojave_dynamic.heic file. However, the HEIF file spec allows for multiple images to be stored in one file (as is the case with this dynamic wallpaper) but is widely unsupported.
#Mac os sierra wallpaper macbook mac#
So the HEIF image format is fairly well supported, especially on Mac with Quick Look, Preview, Photoshop all being able to open HEIF files. This subreddit is not endorsed or sponsored by Apple Inc. If you'd like to view their content together, click here. This fundamental difference in audience is why we support two communities, r/Apple and r/AppleHelp. Apple SubredditsĬontent which benefits the community (news, rumors, and discussions) is valued over content which benefits only the individual (technical questions, help buying/selling, rants, etc.).
#Mac os sierra wallpaper macbook upgrade#
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