Mistake Master
Studio lab tools
Capture, calibrate, analyze. Load a clip, set the scale and origin, track by clicking the object to record its pixel position. You'll get a clean table in seconds and meters, then read velocity and acceleration off the fitted position graphs.
Work down the rail in order: scale, origin, time zero, then track. Each blue button switches what a click on the video does.
Only for footage recorded at a fixed high frame rate (a true constant-rate camera app). Leave Off for normal video. Do not use this to "fix" iPhone Slo-mo; its ramp is not a constant rate and cannot be corrected here.
Click two ends of an object of known length, then type that length.
Click the point you want as (0, 0). For an incline, drag the x-axis arrowhead or type an angle.
Step to where motion begins, then mark it.
| # | t (s) | x (m) | y (m) | x_px | y_px |
|---|---|---|---|---|---|
| no points yet | |||||
Position vs time for x and y. Pick the fit that matches the motion on each axis: Line means constant velocity (read the slope), Curve means constant acceleration (read 2a from the parabola). A projectile is Line on x, Curve on y. Something speeding up horizontally, or sliding down a tilted x axis, wants Curve on x. Click a point to drop it from the fits, click again to bring it back.