: The 4K Ultra HD Blu-ray is widely considered the best "download" (physical transfer). It includes the full IMAX shifting aspect ratio and the highest bitrate for audio and video.

The report on Interstellar is unique because of the technical aspect:

Hans Zimmer’s organ-heavy score is notorious for punishing subpar sound systems. The audio track is mixed with an incredible dynamic range, meaning the quiet whispers of dialogue are followed immediately by room-shaking rocket launches. Use a dedicated AV Receiver with a high-quality subwoofer.

: Standard theaters and some digital releases use a letterboxed widescreen format. In contrast, the IMAX version features approximately one hour of footage that expands to fill the entire screen, offering up to 40% more image.

seen in true 70mm IMAX theaters. While the full 1.43:1 theatrical presentation remains exclusive to physical cinema screenings, there are several ways to experience the film's expanded visuals at home through digital downloads and physical media. Top Download & Home Media Options 4K Ultra HD Blu-ray (Physical/Remux)

The most reliable way to obtain a high-quality digital download of the film is through the official Interstellar 10th Anniversary Collector’s Edition Format & Quality : This set includes a 4K Ultra HD Blu-ray and a secondary disc of bonus content, alongside a Digital Download Code for the film. Availability : It is available at major retailers like