Throw Analysis: let a skeleton judge your form
Upload (or record) a short video of one disc golf throw. We'll find your joints with a pose model, draw the skeleton frame by frame, and measure the handful of things a 2D camera can honestly see. If the video isn't good enough, we'll say "can't analyze" rather than make something up.
1. Pick your clip
One throw, whole body in frame, camera steady. Filming checklist →
- Camera side-on (90° to your throw line) or down the line (behind you), at chest height
- Head to toe in frame the whole time, filling at least a third of the height
- Phone propped up, not hand-held; 60 fps if you can
Choose a video to begin.
Hand speed through your throw
The line is how fast your throwing hand moves in the video (relative to your torso size). The peak is our "release proxy": the fastest the hand gets, which is usually right around release. It is not a disc speed.
Every measurement
What it measures (and what it refuses to)
- Measured from 2D pose: reach-back extent, forward weight shift, hip-versus-shoulder turning order and apparent separation, elbow height in the pull, finish balance and lean, head stability, and a simple tempo from reach-back to the fastest hand.
- Camera angle decides what's valid. Side-on shows reach-back and weight shift. Behind or in front shows hip and shoulder turning. Elbow height, finish and head steadiness work from either.
- Never claimed: disc speed, spin, release angle, flight path, power, or anything about injury risk.
- Refuses when unsure: if the pose model can't see your whole body clearly in enough frames, you're too small in the frame, the camera is moving, or there's no clear throw, you get "can't analyze" and no tips.
- Frame rate matters. The fast part of a throw lasts only a few frames. At 30 fps a frame is 33 ms; at 60 fps it's 17 ms.
Pose estimation by Google's MediaPipe Pose Landmarker (Apache License 2.0), self-hosted on this site. New to the throw itself? Start with our form checklist, forehand basics and hyzer, flat and anhyzer. Planning your setup? How to film your throw.