The Visibase corpus is the outcome of a NWO Investment Grant (1996-2001), which aimed to digitise and describe all sign language video material that was present in the late 1990s at the sign language research groups at the University of Amsterdam and at Leiden University. In the course of the project, all analogue video tapes were copied to professional digital video tapes (DVCAM). Fragments of the 300+ hour corpus have been converted to MPEG-1 and MPEG-2 files.