Digital Film Archiving

Tenolian Bell · December 27, 2007

New York Times: The Afterlife Is Expensive for Digital Movies

Having figured out that really big money comes from reselling old films — on broadcast television, then cable, videocassettes, DVDs, and so on — companies like Warner Brothers and Paramount Pictures for decades have been tucking their 35-millimeter film masters and associated source material into archives, some of which are housed in a Kansas salt mine, or in limestone mines in Kansas and Pennsylvania.

At present, a copy of virtually all studio movies — even those like “Click” or “Miami Vice” that are shot using digital processes — is being stored in film format, protecting the finished product for 100 years or more.

To store a digital master record of a movie costs about $12,514 a year, versus the $1,059 it costs to keep a conventional film master. Much worse, to keep the enormous swarm of data produced when a picture is “born digital” — that is, produced using all-electronic processes, rather than relying wholly or partially on film — pushes the cost of preservation to $208,569 a year, vastly higher than the $486 it costs to toss the equivalent camera negatives, audio recordings, on-set photographs and annotated scripts of an all-film production into the cold-storage vault.

To begin with, the hardware and storage media — magnetic tapes, disks, whatever — on which a film is encoded are much less enduring than good old film. If not operated occasionally, a hard drive will freeze up in as little as two years. Similarly, DVDs tend to degrade: according to the report, only half of a collection of disks can be expected to last for 15 years, not a reassuring prospect to those who think about centuries. Digital audiotape, it was discovered, tends to hit a “brick wall” when it degrades. While conventional tape becomes scratchy, the digital variety becomes unreadable.