aki-null/MotionFrame ? reverse-engineered prompt

Build me a Rust tool that takes a flipbook or image sequence and generates motion vector textures for smoother animation playback.

I want a desktop app with a simple drag and drop workflow, plus a command line mode for batch conversion. The app should let me load a folder of frames or a single atlas image, choose how many output frames I want, generate both a color atlas and a motion atlas, and show me a preview of the motion result before I save it. It should also include a visualization view so I can inspect the motion as arrows or vectors.

Please make it work on macOS, Windows, and Linux, and write out a JSON file with useful metadata for a shader. If there is a good way to support skipped frame analysis for better motion on fast animation, include that too. Use current docs online if you need to, and keep the output clean and practical.