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Syncing eo SwimBETTER graphs with video
See exactly what each stroke looks like next to the force it produced.
Pair eo SwimBETTER force data with your SwimClips video so you can see exactly what each stroke looks like next to the force it produced.
Before you start
Record the session with the eo app and handsets as you normally would. For help with eo itself, see eo's support documentation.
Record the same swim in SwimClips.
Your Hub needs an internet connection to pull in eo data. See First-time camera and app setup (Connect the Hub to the internet).
Import the graph
Open the SwimClips recording that matches the eo session.
Tap the three dots (⋯) in the top-right corner, then Add eo at the bottom of the menu.
Select the athlete's eo account. Accounts you've signed into before appear in the list.
Select the eo session that matches the recording.
Sync the graph to the video
Scrub to the first visible stroke and find where the hand enters the water.
On the graph, find the vertical red line for that stroke. Red lines mark hand entry, with separate lines for right and left.
Line the red line up with the matching hand, then tap Sync.
Scrub ahead a few strokes and check the red lines still match hand entry.
If the sync drifts or looks off
Small drift: use the nudge icons at the bottom of the eo viewer's control column to move the graph forward or backward.
Big miss: go back to the menu and resync.
First strokes look way off: scrub to the end of the video and sync on the last stroke instead. The red lines are usually accurate, but not always.
For precise positioning: on the video, step with −1 / +1, or press your thumb firmly on the scrub bar and roll it gently. On the graph, use the nudge icons.
Read the graph
Summary metrics: percent propulsive force, average stroke rate and average distance per stroke.
Force per stroke: shown in newtons on the right side of the graph.
Line colors: each color is a force direction (vertical, lateral, propulsive). The key is at the top of the graph.
Hide a line: tap its color at the top of the graph. Useful for isolating one force when teaching.
Hid the whole graph? ⋯ → Enable eo brings it back.
Save your work
Connected to a Hub: the synced graph saves automatically. Close the collection and it reopens exactly where you left off.
ZIP export: the graph stays synced to every video angle. Use it to share with another coach or work at home. See Importing your own videos.
Heads up: working in an imported ZIP? Save it to the Hub first (⋯ → Save as new collection). If you build an assembly before saving and then export a new ZIP, the new ZIP won't have the eo graph. Your original ZIP isn't affected. It's a known issue.
Get the most out of it
We strongly recommend building an assembly before reviewing eo data:
Stitch all lengths of the swim into one assembled video. See Video Assembly.
If you have an above-water camera, keep that view up alongside the assembly.
Seeing the full swim next to the graph makes the stroke-to-force connection much clearer.
Share with athletes
Force graphs are hard for athletes to read on their own, so walk them through it:
Voiceover (recommended): record your explanation over the video and graph, then share it. See Voiceovers, drawing and stopwatches.
On deck: go through it with them live.
ZIP file: athletes with the SwimClips app can open it, but without your guidance it's a lot to take in.
See it in action
Mike Bottom uses SwimClips and eo together to fix a swimmer's finish.
