The developer released SAM2 Video Polygon Annotator, an open-source, local‑first desktop tool that uses Meta's Segment Anything 2 (SAM 2.1 Hiera) to create sub‑pixel polygon masks from video frames in milliseconds via zero‑shot points or bounding boxes. The app streamlines dataset preparation by eliminating manual point‑by‑point polygon drawing. Source code is available on GitHub.