When you upgrade macOS or migrate content to a new Mac, software known to be incompatible with the new macOS version is set aside and won’t run on your updated system. The software is moved to a folder named Incompatible Software, at the top level of your Mac startup disk.
If you want to use one of the incompatible apps, get an updated version that's compatible with your new OS. Apps in the Mac App Store list their compatibility and system requirements on their product pages. You can also check with the app developer to find out if they have a new, compatible version or plan to release one.
Jul 27, 2018 You can start by choosing the Apple menu About this Mac, then clicking on Storage. (RELATED: How to Use Optimized Storage to Increase Disk Space.) You can also use Intego Washing Machine to clean up and delete files you no longer need, such as cache files, downloads, duplicates, and more. Check Your Drive. Jul 14, 2020 If you do not understand what to delete, go back and copy the entire Caches folder to desktop (for backup). Next, open the Caches folder, press Command + A, right-click, and then Move to Trash. Finally, empty the Trash. See if everything works properly or not.
PowerPC applications won't run on OS X Mavericks or later.
As part of the transition to 64-bit technology in macOS, you may see an alert in iMovie about media files that won't be compatible with macOS Catalina.
Before you upgrade to macOS Catalina, you can use iMovie to detect and convert all incompatible media files so they'll be compatible with future versions of macOS. After you upgrade to macOS Catalina, the option to convert the incompatible files will no longer be available.
To make sure new media you create is compatible with macOS Catalina, use cameras and media formats supported by iMovie.
In macOS Catalina, you might see an incompatible media message in the viewer when trying to play incompatible media if you haven't converted it before upgrading to macOS Catalina.
Detect and convert incompatible media files in iMovie on macOS Mojave
When you import media or open a library in iMovie 10.1.11 or later on a Mac with macOS Mojave, a window appears that lists incompatible media files in your library.
To convert incompatible media files immediately, click Convert in the window. iMovie creates copies of the media files in the H.264 format. The original files are moved to an iMovie Incompatible Media folder, located in the same folder as the library. Your original media is not modified.
Best video manager for mac. If you want to convert them later, you can use iMovie to scan the library and convert the incompatible files:
In iMovie choose File > Check Media for Compatibility.
In the window listing incompatible media files, click Convert.
Learn more about how iMovie detects and converts incompatible media files.
Formats compatible with macOS Catalina
These video, audio, still-image, and container formats are compatible with iMovie on Mac computers with macOS Catalina:
Video formats
Apple Animation Codec
Apple Intermediate Codec
Apple ProRes
AVCHD (including AVCCAM, AVCHD Lite, and NXCAM)
DV (including DVCAM, DVCPRO, and DVCPRO50)
H.264
HDV
HEVC
iFrame
Motion JPEG (OpenDML only)
MPEG-4 SP
Photo JPEG
XAVC-S
Still-image formats
Audio formats
Container formats
Media formats affected by the transition to 64-bit technology
Examples of media that will be affected by the transition to 64-bit technology include video files from early Flip Video cameras that use the 3ivx codec, early web videos encoded with the Sorenson codec, and media converted from DVD to the DivX format.
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Third-party developers may continue to offer compatibility with some formats by building support directly into their apps. Contact developers of third-party apps for more information about media formats supported in their apps.
Here are some examples of media formats affected by this transition:
3ivx MPEG-4
AV1 / VP9
AVC0 Media AVA0 Media
BitJazz SheerVideo
CineForm
Cinepak
DivX
Flash Video
FlashPix
FLC
H.261
Implode
Indeo video 5.1
Intel Video 4:3
JPEG 2000
Microsoft Video 1
Mac Incompatible Software Folder Deleted
Motion JPEG A
Motion JPEG B
On2 VP3, VP5, VP6, VP6-E, VP6-S, VP7, VP8, VP9
Perian collection of codecs (Microsoft MPEG-4, DivX, 3ivx, VP6, VP3, and others)
Pixlet
Planar RGB
QuickTime files encoded using still image formats (SGI, TGA, PNG, and others)
RealVideo
Sorenson 3
Sorenson Sparc
Sorenson Video / Video 3 / YUV9
Streambox ACT-L2
Windows Media Video 7, 8, 9
Xiph.org’s Theora Video
ZyGoVideo
Convert incompatible media not contained in an iMovie library
To convert an incompatible media file, open it with QuickTime Player (version 10.0 and later) in macOS Mojave or earlier, then save a copy with a new name. This method isn't supported in macOS Catalina.
Mac Incompatible Software Folder Delete Windows 10
You can also use Compressor to transcode one or more media files into a format such as H.264, HEVC, or Apple ProRes. These formats will be supported in versions of macOS after macOS Mojave. H.264 and HEVC preserve image quality with the smallest file size. ProRes preserves the best image quality and provides better performance when editing in iMovie, but creates much larger files that use more storage space than H.264 and HEVC files use.