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Timeline Visualizer Camera Lab 2

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@github-actions github-actions released this 21 Aug 17:26
· 204 commits to main since this release

Timeline Visualizer Camera Lab 2

Camera Lab is an experimental Android build for comparing new zoom behavior before any production integration. It installs separately from Timeline Visualizer and updates Camera Lab 1 without affecting the production app.

What changed

Camera Lab 1 reduced camera panning during zoom-in. Testing showed that this could let the location marker drift too far from the center. Camera Lab 2 replaces that behavior with Travel slowdown during zoom-in.

  • Zoom-in keeps the same quick camera timing.
  • Higher values slow marker travel while the viewport zooms in.
  • The camera continues following the marker within a tighter central zone.
  • Saved travel time is redistributed across non-zooming sections, which preserves the selected video duration.
  • Zoom-out does not trigger a slowdown.

The four experimental zoom styles remain Fixed zoom, Balanced zoom, Active zoom, and Close-up zoom.

What to test

Start with 0%, 30%, 60%, 80%, and 100%. Use the same Timeline file, period, duration, zoom style, and output format when comparing values. Check whether zoom-in stays quick, the marker remains comfortably framed, and the later compensation is smooth rather than feeling like a catch-up jump.

Record the selected percentage and approximate video timestamp if motion feels uncomfortable. Feedback about marker framing, travel speed, compensation, and preferred values is especially useful.

Installation and comparison

The package ID is dev.mahlernim.timelinevisualizer.cameralab. It can remain installed beside production dev.mahlernim.timelinevisualizer. Installing Camera Lab 2 updates Camera Lab 1 and retains its separate settings and app data. If installing it for the first time, select the Timeline file independently inside Camera Lab.

Privacy and limitations

Timeline processing remains on the device. CARTO receives requests for displayed map-tile areas under the same privacy model described by the project privacy policy. Do not upload or attach a private Timeline file when reporting feedback.

Camera Lab is not a production update and is not distributed through Google Play. The experimental terminology, Close-up preset, travel slowdown, and compensation algorithm may change or be removed after testing.

Related issues are #129 and #45.