Segment Anything 2 · C++ Tensor API → wasm

SAM 2.1 Hiera-Tiny video tracking running entirely in your browser. The whole pipeline is C++: every stage (preprocess · encode · per-object prompt / track steps with the memory bank · the mask composite you see) is a LiteRT Tensor API model, wired together with LiteRT's ModelChain and compiled to WebAssembly. The models execute on WebGPU through LiteRT.js. Nothing leaves your device.

Keys: Space play / pause · ← → step frames.