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This paper presents and discusses the introduction of 3D functionalities for an existing web-based multimodal video annotation tool. Over the past years, we have developed a multimodal web video annotation tool that now combines 3D models and 360ºcontent with more traditional annotation types (e.g., text, drawings, images), ofering users the possibility of adding extra information in their annotation work. We show how 3D models augment the annotation work and add advantages like viewing or exploring objects in detail and from diferent angles. The paper reports detailed feedback from a pilot study in form of a workshop with traditional dance experts to whom these new features were presented. We conclude with an outlook of future iterations of the video annotator based on the experts' feedback. CCS CONCEPTS• Human-centered computing; • Human-computer interaction (HCI); • HCI theory, concepts and models;