If you are looking for the specific file mentioned in your query, it is likely a fan-made release found within specific high-definition archival communities. In the context of piracy and file sharing, "Done" is often the handle of a specific encoder or release group, and "1431" is the resolution height of the video file.
You can find detailed discussion and "done" project logs on enthusiast communities: If you are looking for the specific file
For more information on the IMAX 1431 portable and The Dark Knight and The Dark Knight Rises, please visit the following websites: While official home releases include "expanded" IMAX scenes,
are independent fan-restorations designed to recreate the vertical grandeur of the original theatrical experience. While official home releases include "expanded" IMAX scenes, they are typically cropped to 1.78:1 (16:9) to fit standard TVs. These custom restorations re-integrate the full, square-like 1.43:1 frames that were originally only visible in specialized IMAX 70mm or dual-laser theaters. Key Features of the 1.43:1 Restorations : These remain windowboxed (black bars on all
Editors source rare open-matte broadcast television streams, promotional featurettes, or theatrical trailers that occasionally preserve the full vertical frame.
: These remain windowboxed (black bars on all sides) to maintain a constant width throughout the film. Best Devices : These versions are optimized for projectors 4:3 monitors