This is the "magic" of modern video. High-Efficiency Video Coding (HEVC) allows for much better compression than the older x264 standard. In short: you get the same (or better) visual quality at a much smaller file size. For a film that relies heavily on grain and soft lighting, x265 is essential to prevent "blocking" or artifacts in the shadows.
Released in 1974, Emmanuelle was far more than a mere "skin flick"; it became a global cultural watershed that defined the "porno chic" era of the 1970s. Directed by former fashion photographer Just Jaeckin, the film achieved unprecedented commercial success, totaling over 8.9 million admissions in France alone and becoming the first X-rated film released by a major Hollywood studio (Columbia Pictures) in the United States. Artistic Vision and "Soft-Focus" Sensuality
: Likely stands for Standard Cut or Softcore , distinguishing it from versions that may include harder erotic content or extended director's cuts.