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Preservation & Digitization
High quality
The Netherlands Media Art Institute investigated the various formats and systems for digital storage and established procedures. Since then works from the collection have also been distributed on DVD. Works seven or more years old are conserved on high quality Digital Betacams and are digitised from this source. The newer works are on various formats and are encoded on the same station. With orientation to available systems, price/performance/stability was an important focus, and for that reason the Netherlands Media Art Institute preferred real-time coding. The choice ultimately fell on a Windows workstation with a Mobius M720D * MPEG encoder board with composite, s-video, component and SDI inputs working under Windows NT 4. The management software is MPEGWorks Pro encoder with a VTR operating system. Image and sound are encoded in real-time. In general, the encoding of video takes place at the post-production department with a constant bit rate of 8 MB/sec. (in some cases, such as for long works, a lower or variable bit rate is desirable), and in all cases for audio a sample rate of 48 kHz and bit rate of 224000 is used. DVD/MPEG-2 production takes place in a DVD authoring station with various authoring software packets such as Sonic Reel DVD, Sonic DVDIT! PE and TMPG Authorer. An important point is a Realmagic Netstream2000 DVD decoder card that, combined with an RT video monitor, makes real-time preview possible. In addition to the production of DVDs, the system generates an MPEG-2 file which is stored on the file server for further use. The MPEG files are transported from the encoder to the file server. Since October 2003, a Snel & Wilcox compression pre-processor has been in standard use with the encoding process for noise suppression.
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To extend the lifespan of video tapes, they often get → digitised. To maintain as much information as possible and not to alienate the work, it needs special attention and care.
Digital rendering → formats usually condense the image information. You can find general information → here.
The internal algorithms involved in the process of digitisation and condensation can lead to image modifications. We tested a series of → Codecs and condensation methods.
Visit the → HfG Codec Test Site.
→ Sustainable Storage is directed at institutions that would like to build up a digital media archive, and are looking for a financially and ideally appropriate storage solution.
Back to → OASIS Platform
Additional resources:
AktiveArchive
The Conservation Awards
DOCAM | Documentation and Conservation of Electronic Media Arts Heritage
IMAP | Independent Media Art Preservation
Montevideo Guideline
EAI Online Resource Guide for Exhibiting, Collecting & Preserving Media Art
→ Curatorial Tools
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