This is the most common error. It means the uploader has restricted who can view the video.

MDisk is a video hosting platform designed for high-quality, short-form content. Unlike YouTube or Vimeo, it is not an open public platform.

| Feature | Specification | |---------|----------------| | Physical diameter | 80 mm (inside protective caddy) | | Capacity per layer | 25 GB (single), 50 GB (dual) | | Data encoding | RS(544,514) + LDPC (low-density parity-check) | | Audio resolution | Up to 24-bit / 192 kHz PCM or DSD256 | | Video codec | AV1 (main profile, 10-bit) | | Metadata format | JSON-LD embedded in lead-in area | | Archival rating | 100+ years (tested via accelerated aging) |

: Mdisk readers are scattered throughout the game world, often found in key areas like the Surveillance Room, Slaughterhouse, or Nutripills Factory.