I have no Mac and I doubt I can be of help with that, but if there is no direct error in the log file you might produce more logged information by other methods.
Such as packaging the project, and running it afterwards (if successful) to produce logs when media is opened within the packaged project (say, a video plays when it boots).
Or, is this problem only happening on the editor? Is it happening in multiple versions of Unreal 5, but not in UE4 Mac?