Pitching mechanicsMound Metrics AI
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Frame-by-frame delivery analysis

Mound Metrics AI

Frame-by-frame analysis of a pitcher's delivery from one side-view phone video. The video never leaves your device — the pose AI runs entirely in your browser. It surfaces the kind of feedback that once meant a $10,000+ motion-capture lab or an in-person biomechanics session — free and instant. Made for youth and high-school pitchers, parents, and coaches without a lab.

Upload a side-view pitching video and the built-in pose AI tracks the pitcher's joints in real time as you play it back. Tap "Auto-detect" and the AI finds each key moment of the delivery for you — reference stance, peak leg lift, foot plant, and release — then the app compares the resulting angles and ratios to general ranges from pitching biomechanics research.

Drop a pitching video here or tap to choose a file (.mp4, .mov)

Private by design. Your video never leaves this device — the pose AI runs in your browser, so nothing is uploaded.

Estimates from video, not a medical evaluation. Read the 1-minute medical disclaimer before you start.

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For best results, film from the side
  • Camera perpendicular to the throw direction (along the 1st or 3rd base line)
  • Whole body in frame for the entire delivery, including the landing spot — the AI needs to see every joint
  • Slow-motion / high frame rate helps the AI catch the exact moments
  • Keep the camera still — a fence, tripod, or rail works well
Saved analyses

Saved on this device & browser only. Clearing site data or switching devices will lose your saved analyses — export a backup to keep a copy.

Loading a saved analysis restores the video and every frame you already marked — no re-marking needed.