AI video bike fit — film yourself on the trainer, get joint angles and exact adjustments.
1Your bike & goal
Current measurements (optional → get target numbers)
2Load your video
Drop a video or tap to choose
MP4 / MOV / WebM · 10–30 s of steady pedalling
Phone on a tripod at hip height, ~3 m away, exactly side-on.
Whole bike and body in frame, landscape, good light.
Fitted clothing; ride at your normal cadence & effort, hands where you ride most.
iPhone HEVC files may not play in some browsers — choose “Most Compatible” or export H.264.
✦How does riding feel? (optional)
Your discomfort is combined with the video measurements to shape the advice.
Fit history
No saved sessions yet. Save a session after each adjustment to compare before / after.
3Analyse
Load or record a video to start.
ss
0.0s
from current position
Drag each dot onto the centre of the joint: shoulder, hip (the bony point under your shorts), knee, ankle bone. The fix is applied to every frame.
4Results
Adjustment guide
Measurements
Knee angleHip angleKnee extension target· click to jump
Not a professional bike fit or medical advice. Video fitting is an estimate (±2–3° on angles, ±5 mm on distances). Change one thing at a time in ≤5 mm steps, ride a few days, re-film. Pain, numbness or injury → see a professional fitter or physio.
Start your free fit 🚴
FitLab is in a free beta for the first 100 riders. Enter your email to unlock video analysis and PDF reports on this device.
The free beta is full
All 100 beta spots are taken — you're on the waitlist and we'll email you when a spot opens.