Preserving collections of analogue video art is no easy task. Not only must collection caretakers ensure that their magnetic tapes are appropriately catalogued and stored, they must also properly inspect the content of the analogue videotapes in order to make an informed assessment of their condition. This is the only way to prevent unintended image errors - caused by a damaged videotape or video player, or by simple operator error - from being irreversibly merged with the artist's original image content during the digitisation process and thereby permanently compromising the artwork. This publication aims to provide caretakers of our audiovisual artistic and cultural heritage with a general guide to identifying, viewing, cataloguing and assessing the condition of analogue videotapes. The symptoms and causes of 28 common image errors are described in detail, and further illustrated by video sequences on an accompanying DVD. A technical chapter explains the basic principles of video technology, while an art history chapter discusses the deliberate use of image errors as creative tools in analogue video art. Text in English & German. AUTHORS: Johannes Gfeller is head of the master program for the conservation of new media and digital information at Stuttgart State Academy for Art and Design in Stuttgart, Germany. Agathe Jarczyk is a free-lance curator and restorer in Bern, Switzerland. She specialises in modern materials and media, working for various Swiss and international museums and collections. Joanna Phillips is curator and restorer for contemporary art at Solomon R. Guggenheim Museum in New York and an expert in conservation of video, audio, film and computer-based works of art. SELLING POINTS: . A unique reference work and handbook on image errors in analogue video . Provides comprehensive guidance on viewing and cataloguing analogue video tapes . Template data sheets provide support in assessing the condition of tapes and identifying image errors . Included dual-language glossary is of particular value as there is no standardised terminology for analogue video technology . Included DVD shows most common image errors in moving images 150 colour, 34 b/w illustrations