I was curious and ran a test of making a Blu-ray backup using MakeMKV and AnyDVD. I did a binary comparison of the resulting files, and the playlists, certificates, etc. are all identical, but all of the M2TS files have differences. Does anyone have an explanation for why they're not identical?
(Both look totally fine when watched, but I'm curious why they're not bit-identical the way the other files on the disc are.)