Open Badges for the accreditation of media-related competencies in higher education using the production of instructional videos as a case study - Marcell Beilstein; Merlin Eunicke; Peter Ferdinand; Felix Jonas; Andreas Kämper; Gergely Kápolnási; Jessica Köhler; Janis Merg; Mark O. Mints; Sergei Pachtchenko; Jana Schwind; Leonie N. Sieger; et al. (Proceedings of the 16th International ePortfolio and Identity Conference (ePIC 2018, Paris, October 24 - 26, 2018), 2019)