Well, not strictly true. I can transfer some of the video files in my iTunes library to my new iPad mini, but not some of the others. Plenty of memory left, the existing files take 59Gb and it’s a 128Gb version. I was just dragging and dropping the files and it worked fine, until it didn’t. Right clicking and selecting send to iPad doesn’t work either, but the file that won’t transfer play ok in the MacBook.