Apple has confirmed that macOS will no longer provide full support for 32-bit apps following High Sierra. Eg:  https://appleinsider.com/articles/18/02/27/how-to-see-which-applications-on-your-mac-are-32-bit-and-wont-be-supported-in-the-future How will this affect the Mac SA V5 32-bit version, and especially Quicktime-dependent functions?