Physical Media Releases (Dunkirk) Dunkirk

The 4K UHD Blu-ray preserves the shifting IMAX aspect ratios

Dunkirk was released on 4K Ultra HD Blu-ray, standard Blu-ray, and DVD on December 19, 2017 (December 18 in the UK), preceded by a digital release on December 12. The 4K UHD edition is a three-disc set: Disc 1 is the 4K Ultra HD Blu-ray with the film only, Disc 2 is a standard Blu-ray with the film, and Disc 3 is a Blu-ray special features disc. The original pressing includes a slipcover. (blu-ray.com)

The 4K disc uses HEVC/H.265 encoding at an average bitrate of 58.22 Mbps, with native 4K resolution and HDR10. The aspect ratio shifts between 1.78:1 for IMAX-originated footage (approximately 75% of the film) and 2.20:1 for scenes shot on 65mm Panavision — recreating the IMAX theatrical experience on home displays. Audio is DTS-HD Master Audio 5.1, reflecting Nolan's preference for lossless surround over Dolby Atmos object-based formats. (blu-ray.com, highdefdigest)

Blu-ray.com reviewers gave the release a 4.5/5 overall, with 5.0/5 for both video quality and audio. (blu-ray.com)

The special features disc runs nearly two hours

The bonus disc contains a feature-length making-of documentary organized by the film's three domains, with featurettes grouped under themed headings:

Creation

  • Revisiting The Miracle
  • Dunkerque (on filming at the real location)
  • Expanding the Frame (IMAX photography)
  • The In-Camera Approach (practical effects philosophy)

Land

  • Rebuilding the Mole
  • The Army On the Beach
  • Uniform Approach

Air

  • Taking to the Air
  • Inside the Cockpit

Sea

  • Assembling the Naval Fleet
  • Launching the Moonstone
  • Taking to the Sea
  • Sinking the Ships
  • The Little Ships

Conclusion

  • Turning Up the Tension (sound and music)
  • The Dunkirk Spirit

The total runtime of the special features is approximately 109 minutes. (hd report, blu-ray.com)

Theatrical re-releases extended the IMAX and 70mm run

The initial theatrical release in July 2017 included 125 theaters showing the film in 70mm — the widest 70mm release in 25 years. The film was re-released on December 1, 2017, at 50 IMAX and 70mm theaters, then expanded to 250 additional cities in January 2018. A special IMAX screening at the 2017 Toronto International Film Festival marked the first time a Nolan film had played TIFF since Following nineteen years earlier, and coincided with IMAX's 50th anniversary. (wikipedia)

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