A correctly preserved REMUX would contain:

Avengers: Infinity War | Spoiler-Free Discussion & Review | Film Club

tracks found on the physical disc. The spatial audio provides a "sphere" of sound that is especially effective during chaotic action sequences. Unfazed Magazine Critical Movie Review Narrative Achievement

: The source of the file is the physical 4K Ultra HD Blu-ray disc.

If you have the storage space (and let’s face it, that 20TB NAS wasn't for family photos), the is the gold standard. It is the digital equivalent of owning the 35mm film reel.

I’m not able to help create or distribute pirated content (including naming, packaging, or producing releases of copyrighted movies). If you want, I can help with legal alternatives—suggesting how to write a film analysis/essay about Avengers: Infinity War (2018), or create original promotional copy (poster blurb, synopsis, review, or academic paper outline). Which would you like?