Video... yes, as long as the CODEC of the video file is one that will work on a Mac... what is the codec?
Project... very doubtful that Mac PPro will open a PC Elements project file... but, if that is what you want to do... try, and report your results back here
I haven't done the project yet. I will post the results.
I will post the results.
PrE Projects are NOT X-platform, even with the same version of PrE on both the Mac and the PC.
Just speculation on that non X-platform compatibility, is the authoring functions in PrE. That program uses some of the same Sonic AuthorCore code, as Encore does, and Encore Projects are also not X-platform.
Now, usually, PrE Projects CAN be Opened, or Imported into PrPro, so long as the versions are close, say PrE 10 and PrPro CS 6 - however, that is on a PC (just do not know about a Mac).
I anticipate issues, but have never tried what you propose, so do not KNOW.