Those files which use formats and codecs not supported in macOS 10.15 are likely to become unusable when you have upgraded to that in the autumn/fall.Īpple provides detailed information with a list of supported formats, lists some of those which are being dropped, and provides full instructions for conversion. Mojave currently includes legacy support for QuickTime 7, so if you have old media files which rely on that and its codecs, now is the time to convert those to formats which will be supported in macOS 10.15.Īpple has released updates to iMovie, Final Cut Pro, Motion and Compressor which “detect media files that may be incompatible with future versions of macOS after Mojave and convert them to compatible formats.” You should upgrade to those and check your old media files in the coming weeks. Apple has now confirmed that macOS 10.15 won’t support 32-bit software, which includes QuickTime 7 and all media formats and codecs relying on it.
