Annotate Screen

The Annotate screen is where you spend most of your time in SwimLab. It combines a video player, marker tools, and a live splits table in a single workspace.

Layout Overview


┌──────────────────────────────────────────────────────────────────┐
│ TOOLBAR:  [Athlete selector]  [Pool: 50m ▾]  [Share]  [Export]   │
├──────────────────────────────────────────────────┬───────────────┤
│                                                  │ MARKER PANEL  │
│                VIDEO PLAYER                      │               │
│                                                  │  ◉ Start      │
│  [▶ Play]  00:04.12 / 02:18.44                  │  ◉ Turn 1     │
│                                                  │  ◉ Breakout 1 │
│  TIMELINE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━   │  ◉ Turn 2     │
│             ↑Start  ↑T1  ↑B1  ↑T2  ↑B2  ↑Fin   │  ◉ Breakout 2 │
├──────────────────────────────────────────────────│  ◉ Finish     │
│ SPLITS TABLE                                     │               │
│  Lap 1: 00:27.43  |  Lap 2: 00:28.11           │  [+ Add]      │
└──────────────────────────────────────────────────┴───────────────┘

Video Player Controls

Control	Action
Space	Play / Pause
← →	Move one frame back / forward
Shift + ← →	Move 10 frames back / forward
J / L	Slow rewind / fast forward
K	Pause
0–9	Jump to 0%–90% of video duration
Click on timeline	Jump to that position

Playback Speed

Use the speed selector next to the play button to slow the video to 0.25×, 0.5×, or 0.75×. Slow motion helps you find exact frame positions for marker placement.

The Marker Panel

The marker panel (right sidebar) lists every marker in chronological order. Each row shows:

Marker type icon (colour-coded)
Marker name — editable by double-clicking
Timestamp — the video time at that marker
Delete button (trash icon, visible on hover)

Markers appear as colour-coded pins on the timeline below the player. Clicking a pin or a row in the panel jumps the player to that moment.

Adding Markers

Keyboard

Use keyboard shortcuts for the fastest workflow:

Key	Marker type
S	Start
T	Turn
B	Breakout
F	Finish
R	Reaction (false start / DQ event)
U	Underwater (15m mark)
M	Custom marker

Pause on the exact frame, then press the shortcut. The marker is added at the current playhead position.

Work through the race in chronological order: Start → Turn 1 → Breakout 1 → Turn 2 → … → Finish. This keeps your marker list clean and avoids gaps in the splits table.

The Timeline

The timeline strip below the player gives you a bird’s-eye view of the entire race:

Blue pins — Start and Finish markers
Orange pins — Turn markers
Green pins — Breakout markers
Purple pins — Underwater (15m) markers
Grey pins — Custom markers

Hover over a pin to see its label and timestamp. Click to jump the player to that frame.

The Splits Table

The splits table appears below the video and updates live as you add or move markers. It shows:

Lap splits — time from Start to each Turn, and between Turns
Stroke rate (if stroke markers are present)
Underwater distance (if 15m markers are present)
Total time — from Start to Finish

See Splits for a full explanation of how each value is calculated.

Annotations save automatically — you’ll see a “Saved” indicator in the toolbar.

To share your annotation with an athlete or another coach:

Click Share in the toolbar
Copy the link or send directly via email
Recipients can view (but not edit) the annotations in their browser

Exporting

Click Export in the toolbar to:

Download splits as CSV — opens in Excel, Numbers, or Google Sheets
Download annotated clip — a trimmed MP4 with markers burned in (uses the Video Trim tool)
Copy splits to clipboard — paste directly into a message or document

Keyboard Shortcuts

Every action in the annotate screen has a keyboard shortcut. See the full list: Keyboard Shortcuts →