TOP AREA TO REVIEW
Analyzing…
Your one focus for the next rep:
THE NEXT REP STARTS HERE
YOUR SPEED.
DECODED.
Turn sprint footage into a clearer picture of your mechanics. See your movement tracked, spot patterns, and get practical cues for your next session.
ENGINEERED FOR THE TRACK / 001
01 / PERFORMANCE ANALYZER
Run the breakdown.
Drop your sprint footage here.
Side-view clips work best. Keep your full body in frame
for the most useful analysis.
MP4 · MOV · WEBM / MAX 150 MB
YOUR FOOTAGE
ANALYSIS WINDOW Automatically scans full clip
The whole clip is sampled. The analyzer picks the closest visible athlete in the start area, follows that athlete, and stops when it loses the track. Bystanders are ignored, not used as replacements.
FILMING TIP
Place the camera roughly hip-height, perpendicular to the lane. For starts, capture the set position and first few steps.
Place the camera roughly hip-height, perpendicular to the lane. For starts, capture the set position and first few steps.
Loading pose model…0%
02 / YOUR BREAKDOWN
Movement, under the microscope.
Experimental scores derived from sampled video frames.
ATHLETE IDENTITY LOCK
The green box is the athlete we track. If it's wrong, click the correct person in this image, then select Recalculate athlete. The app never switches to a nearby person after losing the athlete.
Looking for the athlete closest to the camera in the start position.
Automatic selection is an estimate. A stationary bystander closer to the camera may need manual correction.
FULL-VIDEO MOTION SCAN
Detecting movement…
Move the marker if detection missed the actual start.
0:00End
FIRST TIME HERE? Angles describe the bends and lean visible in your video, measured in degrees (°). A straight knee is close to 180°, a right angle is 90°, and an upright torso is near 0° of lean. These are camera-view estimates, not automatically good or bad. See the illustrated-free angle guide ↓
FORM INDICATOR
--/100
ANALYSIS COMPLETE
Experimental heuristic, not a validated performance grade or prediction of sprint time.
MOVEMENT INDICATORS
04 / 04These scores are experimental visual cues, not a race-speed prediction. Expand any metric to see what was measured and why.
COACHING CUES · EXPLAINED
Try one cue at a time. Every suggestion explains what it means and what to do on your next rep.
03 / YOUR NEXT TRAINING SESSION
Your personal improvement plan.
Based on the motion indicators in this clip, here is one area worth checking first, a few simple notes, and coaching videos related to the technique. These are suggestions to test, not a definitive diagnosis.
Notes for your next session
COACHING VIDEOS · YOUTUBE
Watch, understand, then practice.
Videos are curated educational resources matched by topic, not personalized reviews of your footage. Links open YouTube. Use a qualified coach to check technique and choose appropriate drills.
Priority uses experimental on-screen scores, not validated biomechanics or evidence that changing this metric will improve sprint times. A single camera view, occlusion, and frame sampling can change the ranking.
POSE TRACKING / SELECTED FRAME
ON-DEVICE AI
Landmark lines are estimates. Angles vary with camera perspective, frame rate, lighting, clothing and occlusion. Video is processed in this browser; no server upload is used.
WHAT THE MODEL SEES
Choose an analyzed frame to see estimated movement angles.
--°
EST. TORSO INCLINE FROM VERTICAL
03 / LEARN THE NUMBERS
What do the angles mean?
All angles are approximations from a two-dimensional camera view. The same athlete can show different numbers at different moments, so treat these as descriptions of movement, not universal targets.
Torso lean
0° = upright · 35° = leaned forward
How far your upper body tilts away from standing straight. In the first steps of a block start, athletes often lean forward as they accelerate and rise gradually.
Try this:Push away from the blocks and let your body rise naturally. Don't force yourself to stay bent over.
Knee angle
90° = bent · 180° = straight
How open the knee joint looks between thigh and shin. It changes quickly as your leg pushes back and then swings forward. A larger angle is not always better.
Try this:During early acceleration, think about pushing the ground away, not reaching your foot far forward.
Elbow angle
90° = right-angle bend
How bent your arm looks between upper arm and forearm. Arms bend and open naturally as they swing. There's no one perfect number for every frame.
Try this:Let your arms swing front-to-back and keep your shoulders loose.
Knee recovery
Measured as knee height relative to the hip
How high your recovering knee travels after the push-off. This one is a relative height, not an angle, and depends heavily on sprint phase.
Try this:Bring the leg through smoothly rather than exaggerating a high-knee drill during an actual sprint.
THE PROCESS
Less guessing. More intention.
Built for sprinters who want useful feedback between training sessions. One good camera angle makes a real difference.
01 / CAPTURE
Film your rep.
Get a clear side view of your acceleration or sprinting. Keep your head, torso and feet visible.
02 / DECODE
Track the motion.
On-device machine learning estimates body landmarks across sampled video frames. No account needed.
03 / REFINE
Find a cue to test.
Review rough movement indicators and practical cues with your coach. Retest with a matching camera angle.