The Possession (1981) 1080p Blu-ray, particularly the editions sourced from recent 4K restorations (like those from Second Sight Films and Umbrella Entertainment), features a massive suite of supplemental content. While the "x265" tag refers to a high-efficiency video coding (HEVC) typically used in 4K UHD or digital encodes to save space while maintaining quality, these extras are standard across the high-definition physical releases. Core Supplemental Features Audio Commentaries:

Here is a deep dive into why this specific 1981 horror-drama remains a cinematic obsession and what makes a high-definition, feature-rich version so essential.

Watch Possession with a subscription on AMC+, rent on Fandango at Home, or buy on Fandango at Home. Rotten Tomatoes

Given this information, it seems you're looking at a high-quality, verified digital copy of the 1981 film "Possession," complete with extras, encoded in a modern and efficient format (x265) and sourced from a Blu-ray.