Hip and knee angles through the pull
Watch the two move relative to each other and see if the hips rise early.
Deadlift form check
Find the frame where the position changed.
Most deadlift feedback is about one moment — the break from the floor, or the point where the hips shoot up. Frame-by-frame tracking lets you find that moment and read the joint angles on either side of it instead of arguing about a blurry still.
No app install · short preview without signup · source video not retained
Numbers you can compare against your own clips.
Torso angle at the floor
Read the starting position rather than estimating it from a thumbnail.
The same clip, scrubbed
Step frame by frame to the exact moment worth talking about.
How you film it decides what the numbers mean.
Film the side you want measured, camera level with the hips and square to the bar. Keep the whole body and the bar in frame for the entire lift.
Estimates from a single camera are comparable when the setup is comparable. Note where you put the camera so the next clip can be shot the same way.
Straight answers, including the limits.
Does it track the barbell?
It tracks the lifter's body points, not the bar. Bar path is visible in the video itself; the measurements are joint angles.
Is one clip enough?
For a baseline, yes. For a pattern, film the same lift on another day and compare — a single set tells you about one set.
How long can the video be?
A single working set is ideal. Short clips process faster and there is a free preview before you sign up for anything.
Other things you can measure this way.
Record one clip and see what it gives you.
The preview runs without an account. Save an analysis when you want to compare it with the next one.