  In geographic data videos, camera movements are frequently used and combined
to present information from multiple perspectives. However, creating and
editing camera movements requires significant time and professional skills.
This work aims to lower the barrier of crafting diverse camera movements for
geographic data videos. First, we analyze a corpus of 66 geographic data videos
and derive a design space of camera movements with a dimension for geospatial
targets and one for narrative purposes. Based on the design space, we propose a
set of adaptive camera shots and further develop an interactive tool called
GeoCamera. This interactive tool allows users to flexibly design camera
movements for geographic visualizations. We verify the expressiveness of our
tool through case studies and evaluate its usability with a user study. The
participants find that the tool facilitates the design of camera movements.
