BY
My StrokeLab
Run a personal race analysis, separate from your team dashboard. Your saved races are below.
Analyze a race
Upload a new swim to break it down, or reopen a saved analysis below.
Your analyses
Saved on this device. Sign in to sync.
Tick two of the same race to compare them.
Select analyses to share or delete.
Team
Loading team info…
StrokeLab v25.00.00 is running here.
Public release history
How would you like to start?
Step 1 · Choose your video
Upload your race video
Waiting for video
Upload a file to continue.
Step 2 · Set up race
Set the race details
Step 3 · Official splits
Add your electronic splits (optional)
If you have electronic 50 splits, enter each 50 separately, not as a running cumulative total. Leave any blank if you do not have it, or skip this step.
Step 4 · Set “take your mark”
Pause when you hear “take your mark”
This only points StrokeLab at the right part of the clip, so it does not need to be exact. Can't find it? Choose I can't find it to set the start from first visible movement instead.
No mark set yet.
Step 5 · Find the starting signal
Pick the start signal
StrokeLab securely scans only the brief audio around the expected start. Your full video and video frames stay on this device. Play the candidates and pick the real signal, or use None of the above.
Scanning…
Step 6 · Confirm before video review
Review the controls before you start
Choose how to track strokes and set your playback speed before review.
What happens in video review
Automatic tracking is available for breaststroke recorded in StrokeLab. Upload uses guided stroke marking.
- Tap Add Stroke or press R exactly at the end of each stroke.
- Tap Wall touch or press P at each wall touch. The final touch finishes the analysis.
- Turn your phone sideways. Tap anywhere on the video with one finger for a stroke or two fingers together for a wall touch.
- The final wall touch finishes the race. Pause or undo anytime.
- Watch your guided recording and tap Wall touch or press P at each wall touch. No swimmer tracing.
- Select the cap once, on the first surface stroke of each length. StrokeLab adapts as it tracks.
- Find strokes, then review every length and correct missed or uncertain marks. Splash, underwater swimming, or a head outside the guide can cause gaps.
- Automatic stroke marking stays on your device and uses video timing, without adjustment to official splits.
Do not worry about being perfect. On the results screen you can re-mark or delete any out-of-place strokes afterward, as long as you do it before leaving the page (the video is not stored).
Video review
Your video will appear here once you begin tracking.
Elapsed
0.00 s
Breaststroke tracking
0.00 s
Analytics are below
Strokes0
Elapsed0.00 s
Lengths-
Avg CPM-
Cycle Rate (CPM)iFull cycles per minute. For freestyle and backstroke, one cycle contains two marked arm strokes.Depends
Cycle PeriodiSeconds needed to complete one full stroke cycle. This is 60 divided by CPM.Depends
SplitsiYour time for each length of the race.Lower is faster
Strokes per LengthiHow many strokes you take on each length.Fewer is usually better
Last step before results · 15 m underwater splits
Mark every 15 m crossing
On each length, scrub to the moment the swimmer's head passes the 15 m floats and mark it, one mark per length. Not sure where that is?
Where is the 15 m mark?
Marked 0 of 0 lengths
Time to 15 m by length
No need to be perfect, you can re-open this step from the results to adjust any mark.
Re-marking strokes
Re-mark selected strokes
For each selected stroke, scrub to the exact frame the hand enters the water and mark the replacement, or delete it if it should not be there at all. Use the nudge buttons for fine control. Save when you are done and your results update automatically.
Fixed 0 of 0
Selected strokes
Nothing changes until you save. Cancel keeps your original strokes.
Compare races
Your team
Share the code with your swimmers. Their saved races show up here for review, comparison, and coach notes.
Loading your team…
Settings
Manage the name StrokeLab shows to swimmers, coaches, and saved team analyses.
This name is separate from your Google account name. It is used on StrokeLab teams, coach dashboards, and new shared analyses.
Google accountNot signed in
StrokeLab nameNot set
Account typePersonal
TeamNone
Saved analyses0 on this device
SyncNot checked
Video files are still not stored by StrokeLab. Signed-in accounts sync saved analysis data and reports, not the original race footage.