Why are you asking about Apple related problems on a Windows based program forum?
I for one would not have a clue and can't think of a program here that would do it.
Do you mean you have transferred an ISO or video file from a Magix product onto a Mac because it has a DVD burner. I'm not sure how much video you could put onto a CD. Not sure that would work.
Hi and welcome to the forum, however this may be for the wrong one.
This forum is for users of Magix products and Magix do not make any software that will run on a MAC OS for video editing or creating discs.
If you have Magix video editing software running on a PC or on a MAC that dual boots into Windows, and you want to use with videos you downloaded to the MAC using Catalina, then we may be able to help you, if not then you are definitely in the wrong forum.