How to Add Acceleration and Braking Data to GoPro Video

Shred Scopes can display speeding up and slowing down with a signed gauge, arrow, bar, or numeric readout. The clearest source choices are GPS-path acceleration and longitudinal G, which use positive and negative values to distinguish acceleration from braking.

Select one measurement and label it accurately rather than treating all acceleration-related streams as equivalent.

Choose the measurement

Studio can provide:

  • "Acceleration (GPS 3D path)," which measures how quickly 3D speed changes and uses ground speed when 3D speed is unavailable. Positive values indicate acceleration; negative values indicate slowing or braking.
  • "Longitudinal G (GPS path)," which estimates forward or backward load from changes in ground speed. Positive values indicate acceleration; negative values indicate slowing or braking.
  • Camera-axis acceleration on X, Y, and Z, whose relationship to forward movement depends on how the camera is mounted.

Use GPS-path acceleration for a rate expressed in meters per second squared or feet per second squared. Use longitudinal G for a signed value expressed in g.

Avoid using one camera axis as forward acceleration unless the mounting orientation is known and remains fixed.

1. Load the source telemetry

Open Shred Scopes on a desktop computer, sign in, and select "Studio."

Load an original GoPro clip or saved telemetry. Confirm that "Acceleration (GPS 3D path)" or "Longitudinal G (GPS path)" appears in the source's available streams.

Both depend on usable GPS movement. A source with camera motion data but no valid GPS path may lack these directional travel measurements.

2. Choose an acceleration template

At "Choose Template," select an acceleration design. Imperial and metric choices are available in collections such as:

  • Black Diamond Acceleration
  • Flagship Accel or Flagship Accel Text
  • Swell Acceleration or a Swell Accel Text layout
  • Trailhead Acceleration or Trailhead Acceleration Text

Depending on the templates available to the account, a signed arrow or line-gauge design may also be available.

Built-in acceleration templates generally provide a useful starting point for the GPS-path acceleration stream.

3. Map the signed stream

In the Template Editor, select the data-graphic or data-text layer that shows acceleration. Open its input controls and choose "Stream."

Select either:

  • "Acceleration (GPS 3D path)"
  • "Longitudinal G (GPS path)"

Apply the same choice to any numeric readout, gauge, and data-driven tick layers intended to agree with one another.

Update the static label to identify the measurement. A value in g should not retain an m/s² label, and a value in m/s² should not be labeled as G-force.

4. Choose the unit

GPS-path acceleration uses meters per second squared by default and can be converted to feet per second squared.

Longitudinal G uses g and has no unit conversion.

Select the conversion before setting clamps or a fixed range because those controls use the converted unit.

Use enough decimal places to show meaningful changes without making the display difficult to read. Longitudinal G commonly benefits from one or two decimals; the best choice depends on the activity and range.

5. Center the range on zero

Acceleration and braking use opposite signs, so zero should normally be the neutral center of the graphic.

Use:

  • "fit max absolute" to create equal positive and negative limits from the largest recorded magnitude
  • "fixed range" to use consistent limits across several clips

An ordinary min/max fit can shift the neutral point when the strongest braking and acceleration values differ. A symmetric range keeps direction visually clear.

If the graphic moves the wrong way, use its direction control rather than reversing the meaning of the telemetry stream. The text sign and graphic direction should tell the same story.

6. Control jitter and spikes

Use "Smoothing" to reduce rapid visual changes. Check short braking and acceleration events after increasing it because heavy smoothing can make them appear weaker or later than the visible action.

Use "Deadband" around zero when the indicator jitters during steady travel. The deadband holds small values at neutral while leaving values outside its window unchanged.

Use "Clamp values" only when an unusual sample would push the graphic outside its intended range. Clamp limits apply in the selected converted unit and affect only the chosen layer input.

7. Preview acceleration and braking events

Scrub to:

  • A steady-speed section
  • A clear acceleration
  • A clear braking event
  • A stop and restart
  • The strongest positive and negative values

Confirm that positive values indicate speeding up and negative values indicate slowing down. Check that arrows, colors, text signs, and gauge directions agree.

GPS-derived acceleration can be less reliable during weak satellite coverage or very low movement. Avoid presenting an isolated spike as a precise physical measurement without checking the surrounding speed behavior.

8. Save and export

Use "Template" > "Save As New" to retain a modified built-in design.

Export the template by itself for use over footage in another video editor, or choose "Composite Mode" to place it directly over the original GoPro video. Keep the Studio tab open and visible while the export renders.

If acceleration data is missing

Check that:

  • The source contains usable GPS speed and path data.
  • The original GoPro file is loaded rather than a re-encoded copy.
  • The chosen layer uses GPS-path acceleration or longitudinal G.
  • All related layers use the same measurement and unit.
  • A clamp, deadband, or range is not hiding expected values.

The completed overlay now distinguishes acceleration from braking with a signed measurement, consistent unit, and neutral-centered visual range.