Initially, I was surprised that the drop-down list on Google re: the above is so long.
My Mac plays movies flawlessly, but my DVD player does and doesn't. This appears to be a widespread problem. I get the problem with cranky players, given code reading, regional restrictions, unreliable communication between an older TV (mine) and player, etc.
My question is this: What is the makeup of a computer that allows it to play movies (even somewhat scratched discs) that my player won't?