I think it’s unproven either ways. Courts ignore definition wars so long both party ignores it too. If you sued me for stealing some cheese, the justice system won’t care if it actually had been cheese or what actually cheese is so long I stick to such insistence that I didn’t do anything wrong up to your accusation.

The movie re-encoded into a different format is perfectly fine if the work is sufficiently different.

Taking a file of wolf of Wall Street and encoding it so all the oranges are blue but there’s no other changes is bad as that’s clearly a derived work.

Taking the same file and scrambling it so it doesn’t resemble is perfectly fine.

Watching the movie and then making your own version of the same exact plot points is infringement. But using plot points that are changed is perfectly fine.

There’s existing copyright law that prevents the makers of the movie Deep Impact from suing the makers of Armageddon.