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デジタルコレクション

Editions, Formats, and Display for Moving Image: Reading the Record

What duration, edition, format, and installation instructions actually mean, and why the same video looks different in two museums.

A collection record for a video work is usually short, and the few lines carry an enormous amount: duration, edition, format, sound, dimensions, version. They determine which object you are actually looking at, and they explain why the same work looks different in two museums.

This is the companion to How to watch moving image art: that piece covers looking, this one covers what you are looking at.

Editions: video has a “which one”

Video works are usually issued in editions, written like this:

Edition 3/5 + 2 AP

Five in the edition, this is number three, with two artist’s proofs on top.

Three things to know:

  • Edition number is not the number of copies. Galleries and museums may hold exhibition files, and those do not count.
  • APs circulate. An artist’s proof is not “not for sale”; it simply sits outside the main edition.
  • Earlier numbers usually cost more, though the work is identical.

Some works are open edition, especially net art and downloadable works. Scarcity does not apply, and value has to come from somewhere else.

What a complete set contains

Component Function
Master or original file Archival reference, not screened
Exhibition copy What actually plays, replaceable
Certificate Edition, signature, installation instructions
Installation instructions Projection size, brightness, audio, loop, room conditions

The installation instructions are often not on the website, and they are half the work. Without them, an institution can only guess the display from photographs.

Formats: why old works change

Video has moved through several generations:

  • Tape (U-matic, Betacam SP, Digital Betacam)
  • Disc (LaserDisc, DVD)
  • Files (ProRes, H.264, DCP)

Every migration changes something: colour shift, frame-rate conversion, cropping, compression artefacts. Institutions carry out migration and try to preserve the original appearance, but “exactly as it was” is rarely achievable.

Watch for these in a record:

  • Original format. The historic medium, with its own historical meaning.
  • Exhibition format. What is actually screened now.
  • Restored or remastered version. A later intervention.

The three can differ substantially. Establishing “the original” for a video is far more complicated than for a painting.

Display conditions: one work, two rooms

Specifications typically include:

  • Delivery. Projection, monitor, LED wall.
  • Size and aspect ratio. How large, in what proportion.
  • Brightness and contrast. Room light matched to projection output.
  • Sound. Channel count, volume, headphones or speakers.
  • Loop and synchronisation. Cycle length, timing across channels.
  • Room. Wall colour, floor, seating, position of entrances.

None of this appears on the label, and all of it shapes what you see. Tate Modern and MoMA often show comparable works at different projection sizes and under different room conditions — “the same work”, but not the same experience.

Preservation: video fails quietly

  • Media decay. Tape loses its charge; discs oxidise.
  • Format obsolescence. Players go out of production; software stops supporting codecs.
  • Colour drift. Gamut and gamma differ between analogue capture and digital files.
  • File corruption. Drive failure, checksum errors.
  • Lost dependencies. Custom software, scripts, sensors.

So the core of video conservation is not repairing an image but continuous migration: moving files to new media and codecs on a schedule, and testing playback. Archive records frequently note “migrated in 2019” for exactly this reason.

Fields worth reading

  1. Duration. Determines how to watch.
  2. Edition. Number and APs.
  3. Format. Original and exhibition.
  4. Sound. Silent or not, channel configuration.
  5. Dimensions. Projection or display size.
  6. Credit / courtesy. Source and licensing party.
  7. Installation instructions. Whether a separate document exists.

If a record says “mixed media” or “dimensions variable”, the work has spatial requirements, and you should look for the instructions.

Where to look

  • Ars Electronica Archive. Searchable by year across exhibitions, prize winners, and artist files; good for tracking technical change.
  • ZKM Collection. Media art with consistent cataloguing.
  • BAMPFA. Film and video together, useful for comparing two preservation regimes.
  • MoMA and Tate Modern. Canonical video works, with restoration notes.
  • Tbilisi Photo and Multimedia Museum. Regional archival practice in moving image.

Common mistakes

  • Treating any copy as the original. Editions and exhibition files are separate categories.
  • Ignoring installation instructions. Without them, a show is arranged from photographs.
  • Assuming digital files are safe. Drives and codecs are less stable than tape.
  • Taking “restored” to mean unchanged. Restoration involves choices; colour and duration may shift.
  • Judging by screen size. Value in moving image lies in edition and conditions, not in how big it is.

What to do next

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