The "MULTi" designation typically signifies that the release includes multiple language tracks or is a "multi-format" combo, often bundling the 4K UHD disc, a standard 1080p Blu-ray, and sometimes a digital copy.
: The primary track is DTS-HD Master Audio 5.1 (24-bit). Notably, Christopher Nolan opted against a Dolby Atmos or 7.1 mix to maintain a specific theatrical soundstage. Critical & Cinematic Overview 4K Review | Tenet (Ultra HD 4K Blu-ray) Tenet MULTi 4K ULTRA HD x265 2020
: The presentation dynamically shifts between 1.78:1 (IMAX sequences) and 2.20:1 (non-IMAX sequences). This provides an immersive experience that utilizes more of your screen during key action scenes. The "MULTi" designation typically signifies that the release
