The TIB AV-Portal is a web-based platform for scientific videos from the realms of technology/engineering, architecture, chemistry, information technology, mathematics and physics. Amongst other things, the videos portray computer visualisations, learning material, simulations, experiments, interviews, and recordings of lectures and conferences. A key feature of the portal is the use of different automated video analyses. The AV-Portal offers new methods for searching within scientific films from the fields of science and technology. By combining multimedia analysis techniques, the TIB AV-Portal provides optimised search results for audiovisual media that can be clearly referenced and cited.