VertChecker

First-party example

A real standing jump, measured from video

This is first-party footage analyzed by the same pipeline used for uploads. The clip is a 60 fps standing countermovement jump recorded in a gym studio.

The overlay shows the tracked body and event timing. The source clip is 3.5 seconds long.
Flight-time height
34.9 in / 88.6 cm
Air time
0.850 s
Timing uncertainty
±1.7 cm
Effective frame rate
60.0 fps
Trajectory fit
r² 0.997
Contact source
Foot landmarks

How to read this example

The detector marked takeoff at 1.483 s, the apex at 1.902 s, and landing at 2.333 s. It also reported that camera motion was compensated. The strong trajectory fit supports the ballistic timing, but the warning still matters: a fixed camera would provide a cleaner protocol.

What this example does not prove

One successful clip demonstrates the product output; it is not a validation study and does not establish accuracy across phones, athletes, lighting, angles, or landing styles. Use the frame seeker to verify your own events and read every warning.