Based on the official Blu-ray specifications for this release:

: Rated R for strong visceral violence throughout, and some language.

: Indicates the primary audio track is in French. In technical scene releases, this usually refers to VFF (Vrai French, the version dubbed in France) unless otherwise specified.

: The movie was shot at 2.8K resolution and mastered at a 2K Digital Intermediate. The 1080p Blu-ray is considered high-quality, with some reviewers at Blu-ray.com noting it holds up very well even compared to the 4K Ultra HD version.

: Use a versatile player like VLC Media Player or MPC-HC to ensure all audio tracks (French and English) and subtitles are accessible.