This historical anchor marks the exact window when the piece of media was authored, mastered, and commercialised for public consumption. The 4K Revolution: The 2021 Benchmark
Released during a year when high-end digital streaming and physical media were pivoting toward 4K as the new standard, SSIS858 became a benchmark for "Idol-style" productions. Studio S1 often uses these high-resolution releases to market their top-tier talent. Resolution: 3840 x 2160 (4K UHD). Studio: S1 No. 1 Style. ssis858 4k 2021
Unless you find a from a Japanese 4K broadcast or a limited Blu-ray (unconfirmed for SSIS-858), stick with the original FHD release. This historical anchor marks the exact window when
If you are looking to narrow down your research on this specific release, let me know: let me know: