This maximizes the potential speed and the processing power of your CPU. These components – specifically, the QuickTime libraries – are no longer included in Catalina as it is completely 64-bit.
However, we’ve been relying on some 32-bit components for import, export, linking and playback of certain file types. In an effort to provide full transparency as to the effects of the move to support the Catalina OS, we have released this comprehensive article detailing what is happening with Media Composer, why it’s happening, and what you need to know before you upgrade. For Media Composer, this means making changes to our installers, some of the tools we include within the application, and most significantly, how we work with file-based media. Over the past several months – in some cases, years – we have been working closely with Apple on making the necessary changes to our software, so we can continue to provide support on the latest and greatest client systems. With the advent of Apple’s macOS Catalina, software companies have been making changes to their products in order to support the functionality this update brings.