Abstract
The German National Library of Science and Technology (TIB) aims to promote the use and distribution of its collections. In this context TIB publishes metadata of scientific videos from the TIB|AV Portal as linked open data. Unlike other library metadata the TIB|AV-Portal deploys automated metadata extraction and named entity linking to provide time-based semantic metadata. By publishing this metadata, TIB is offering a new service involving the provision of quarterly updated data in RDF format which can be reused by third parties. In this paper the strategy and the challenges regarding the linked open data service are introduced.