detecting and converting incompatible media files
I've read everything I can find on which video files will become incompatible after Mojave, including the forums, the internet and Apples support site. It's still unclear to me which video files will no longer be viewable with QuickTime X (or other macOS apps). My questions are as follow:
If a file opens with QuickTime X without converting, is that a good sign that it will still play after Mojave?
The Apple support mentions MPEG-4 remaining compatible, but what about files with .mpg extensions? What about MPEG-1 files?
Is there any easy way to tell if a video file is 32-bit versus 64-bit? Does its icon showing its thumbnail (versus as a generic icon) in icon view in finder help determine which files need converting and which ones will continue to play in QuickTime after Mojave?
I would certainly appreciate any advice from the experts on this forum who are definitely more knowledgable about this type of thing than I am!