Motion Lab workspace

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Motion Lab

by BioSystems One Inc.

Local processing active

Recovery ready

Free plan

Projects

Where projects are saved

Saved projects

Nothing saved yet.

Project files

Project

Trial name

Source

No trial loaded.

File—

Resolution—

Duration—

Frames—

Frame rate

fps

Waiting for a file

Filmed with a high-speed camera

Recorded fps

Real time uses the recorded rate

Working range

0– 0

Set by

– f

Span—

Key events

No events marked. Press M at foot strike, toe-off, release — anything you want to measure between or normalise to.

X axis

0 %

100 %

Time origin

t = 0 at frame0

Scale calibration

Not calibrated

Length

Height m

Scale—

Axes

Origin—

Y positive upward

AI pose estimation

Landmark template

No landmarks yet.

Segments

Draw segments between joints

Thickness px

Track segment as

No segments. A landmark template adds them automatically; “Join” connects any two landmarks.

Manual digitization

Advance automatically after each click

Active landmark —

This frame—

Landmark display

Draw trajectory paths Show landmark labels Show landmark list on video

Label size px

Landmark size 5.5

Overlay 100%

Image-feature tracking

Image-match quality—

Places a starter skeleton on the current frame so you can check and correct it before running a whole range.

Start automatically once every joint is placed Estimate occluded landmarks Use AI to recover points lost by pixel tracking Experimental: motion-aware validation

Off by default. Learns recent direction and speed, rejects implausible jumps, and applies extra image checks only when needed. Turn off to use the original tracker.

Restore also discards track corrections made since that experiment. Available in this session only.

RTMPose Body26 runs in a local Worker first; MediaPipe is used as a fallback when the browser cannot run RTMPose. Source video frames are never uploaded.

Maximum occlusion gap frames

Hidden points remain labelled as estimates. Skeleton links guide prediction and reject reappearances that would change limb length implausibly.

Template size px

Search radius px

Minimum similarity ZNCC

New measurement

Start

End

Point 3

Measurements

No measurements defined.

Draw measurements on video

Style

Line px

Style

Text px

Typeface

New drawings show on every frame

Show the skeleton

Drawings

Nothing drawn yet.

Image export

Include landmarks, measurements and drawings

Signal processing

Low-pass filter before differentiating

Cutoff Hz

2nd order Butterworth, zero lag

Noise floor—

Graph setup

X axis

Parameter

Joint path

Selected range

No graphs yet. Choose a parameter, then select Add graph.

Review

No low-confidence points in this range.

Range summary

Add a graph to see its minimum and maximum.

Kinetics estimates

Everything else in this step is kinematics — position, velocity, acceleration and angles — and needs no mass. Turn this on only to estimate forces and moments, which does.

Estimate forces and moments

Body masskg

Heightm

Anthropometry

Force model

External load

A barbell, a box, a tool, a loaded pack. Attach it to the joint that bears it — the body has to accelerate it, so it changes the forces.

Nothing carried — body mass only.

Total mass—

Enter body mass and calibrate scale

No kinetics estimate yet.

Estimates use 2D motion, gravity 9.80665 m/s², rigid links, and the selected smoothing settings. They are not a force-plate or clinical measurement.

Anthropometry: segment mass fractions are adapted from de Leva (1996), based on the Dempster (1955) cadaver model and commonly used with Winter’s biomechanics methods.

Current frame

Nothing tracked yet.

Figure export

Size × px

Report builder

Trial name

Multi-video

Include

Trial name Model-fit frame Graphs Results tables Key events Methods and provenance

Graph details

Graph legends Axis labels and units

Data export

Excel data

Keys

SpacePlay / pause

← →Step one frame

⇧ ← →Step ten frames

Home / EndGo to in / out point

[ / ]Set in / out point

MMark a key event here

Alt + [ / ]Previous / next event

DToggle digitizing

CCalibrate scale

OSet the origin

1 – 9Select landmark

TabNext landmark

DeleteRemove point on frame

YDay / night mode

Ctrl + ZUndo

⇧ Ctrl + ZRedo

Alt + ←→Nudge point 1 px

Alt + dragPan · wheel zooms

Right-clickTools for whatever is under the pointer

Ctrl X C VCut, copy, paste a drawing

V L A R ESelect, line, arrow, rect, ellipse

P T SPencil, text, spotlight

KDrop a trackable point

G / UAngle / distance measure

BLandmark template

Data handling

✓

Video stays on this computer. The browser reads the file from disk and decodes it in memory.

✓

Analysis runs locally. Tracking, angles and kinematics are computed in this tab, not on a server.

✓

You control the outputs. Data leaves only when you export or save a project file.

✓

Project storage is your choice. Keep projects in this browser or a folder, or explicitly sync project JSON to your signed-in workspace. Source video is never included.

Workspace

View controls

Notes

Open a video or an image

Drop a file here, or choose one. The workspace adapts to what you open.

MP4 · WebM · MOV · JPG · PNG · WebP — nothing is uploaded.

Reading frame rate from the file

Landmarks

Measuring joints —

Locked—

Confidence—

Remaining—

The picture is held still while frames are measured. Results appear on the video when the run finishes.

FRAME 0/0

TIME--:--.---

CURSOR—

MODEIdle

100%

Setup

Select

Track

Measure

Annotate

Workspace

Local processing Frame— Time— FPS— Size— Units— Ready v1.17.4

5×

Kinematics Layout Selected range

↘

Comparison position

Frame Speed

MotionLab

BioSystems One Inc.

Multi-video study

Select a pane to control, calibrate, and track it from the normal sidebar. Use the shared controller for synchronized review.

No sources loaded. Files stay on this device.

Pane arrangement Active view Sync playback across views

Shared controller

Shared playback aligns video time. Each view can still be played or scrubbed independently.

Track active view Point name

Select a view, choose Place tracker, then click the anatomical landmark. Drag any point to correct it.

Frame rate

Tracking range is set per selected view.

No tracking points in this view.

Pixel tracking results remain correctable and belong only to their source view.

Active view scale Pixels in reference Known distance Unit

Enter a reference for the selected view. Full point-click calibration remains available in the main workspace.

Graphs Display

Choose which views contribute tracked X position. Display them on one scale or as separate plots.

Choose local sources to begin a comparison.