Barrel Speed captures high-FPS swing clips from a side-on camera, estimates bat speed and exit velocity, and creates shareable links backed by Cloudflare Worker + R2.
Frame hands + barrel + contact zone. Bright background helps detection and tracking.
Barrel path scaffolding now; pluggable ML detector interface for true keypoints later.
Worker serves viewer pages; clips stored in R2 for backup and easy share links.
/swing/<id>. Sessions look like /session/<id>.