What's Happening?
The U.S. National Archives and Records Administration (NARA) has published specific file formats it accepts for digital video records intended for permanent preservation by federal agencies. For digital video, the acceptable list includes the MPEG-4 wrapper
with the H.264 codec, a combination commonly produced by many phone cameras. NARA's guidelines specify both the wrapper and the codec, emphasizing that a file extension like '.mp4' is only part of the requirement. Notably, HEVC (H.265), a space-saving codec offered by many phones, is not currently on the acceptable list. Beyond format, NARA requires files to be valid against their specifications, free from encryption that impedes access, and that a copy be retained by the submitting agency until NARA confirms legal custody. These guidelines are primarily for federal agencies, but they offer insights into long-term digital preservation for anyone with significant video archives.
Why It's Important?
These guidelines are crucial for ensuring the long-term accessibility and preservation of official U.S. government digital video records. By specifying acceptable formats, NARA aims to prevent the loss of information due to technological obsolescence or format incompatibility. The exclusion of HEVC, despite its efficiency, highlights NARA's focus on sustainability and the availability of technical specifications and licensing without restrictions, which are key criteria for formats deemed suitable for permanent records. This impacts federal agencies by dictating their video archiving practices and potentially influencing the types of recording equipment and software they procure. For the public, these standards ensure that historical video records remain viewable and usable for future generations, supporting transparency and historical research. The emphasis on unencrypted files also underscores the commitment to open access to public records.
What's Next?
NARA's bulletin indicates that the list of acceptable formats is subject to change, with new formats potentially added as they are adopted for federal use and obsolete ones removed. Federal agencies will need to continue monitoring NARA's updates to ensure their record-keeping practices remain compliant. Developers of video recording and archiving software may also consider these specifications to better support federal agency requirements. The ongoing evolution of video codecs and file formats means NARA will likely continue to review and update its guidelines to balance technological advancements with the imperative of long-term preservation. Agencies must also ensure their internal processes for validating files and managing copies align with NARA's requirements for successful transfer and acceptance of permanent records.
Beyond the Headlines
The detailed specifications from NARA underscore a broader challenge in the digital age: the fragility of digital information over time. Unlike physical documents, digital files require active management and migration to remain accessible as technology evolves. NARA's approach, focusing on open standards and widely supported codecs like H.264, reflects a strategic effort to mitigate the risks of 'digital dark ages' where historical records become unreadable. This also raises ethical considerations about what constitutes a 'permanent record' in an era of rapidly changing media. The guidelines implicitly encourage a shift towards more robust and universally compatible digital practices across government, influencing how information is created, stored, and eventually accessed by the public. The distinction between wrapper and codec also highlights the technical complexities involved in true digital preservation, moving beyond simple file extensions to the underlying encoding methods.
