It's common for academic papers to include supplemental video files (like "Video S1.mp4" or "Movie 1.mp4") on platforms like or ScienceDirect , but "KUR42" is likely a custom identifier used by a specific researcher or lab.
(e.g., a specific database, social media, or a citations list).
To help me track this down, could you provide a bit more context? For example: The (e.g., biology, physics, robotics). The authors or the university/institution involved.