Data Export
Various types of files, including the tracking data, can be exported out from Motive. This page provides information on what file formats can be exported from Motive and instructions on how to export them.
Tracking Data Export
Once captures have been recorded into Take files and the corresponding 3D data have been reconstructed, tracking data can be exported from Motive in various file formats.
Exporting Rigidbody Tracking Data
If the recorded Take includes Rigid Body trackable assets, make sure all of the Rigid Bodies are Solved prior to exporting. The solved data will contain positions and orientations of each Rigid Body.
Export Settings
In the export dialog window, the frame rate, the measurement scale, and the frame range of exported data can be configured. Additional export settings are available for each export file formats. Read through below pages for details on export options for each file format:
Tracking Data Export Steps
Exporting a Single Take
Step 3. On the export dialogue window, select a file format and configure the corresponding export settings.
To export the entire frame range, set Start Frame and End Frame to Take First Frame and Take Last Frame.
To export a specific frame range, set Start Frame and End Frame to Start of Working Range and End of Working Range.
Step 4. Click Save.
Working Range:
The working range (also called the playback range) is both the view range and the playback range of a corresponding Take in Edit mode. Only within the working frame range will recorded tracking data be played back and shown on the graphs. This range can also be used to output specific frame ranges when exporting tracking data from Motive.
The working range can be set from the following places:
In the navigation bar of the Graph View pane, you can drag the handles on the scrubber to set the working range.
Exporting Multiple Takes
Step 2. Right-click on the selected Takes and click Export Tracking Data from the context menu.
Step 3. An export dialogue window will show up for batch exporting tracking data.
Step 4. Select the desired output format and configure the corresponding export settings.
Step 5. Select frame ranges to export under the Start Frame and the End Frame settings. You can either export entire frame ranges or specified frame ranges on all of the Takes. When exporting specific ranges, desired working ranges must be set for each respective Takes.
To export entire frame ranges, set Start Frame and End Frame to Take First Frame and Take Last Frame.
To export specific frame ranges, set Start Frame and End Frame to Start of Working Range and End of Working Range.
Step 6. Click Save.
Motive Batch Processor:
File Formats
Motive exports reconstructed 3D tracking data in various file formats and exported files can be imported into other pipelines to further utilize capture data. Available export formats include CSV, C3D, FBX, BVH, and TRC. Depending on which options are enabled, exported data may include reconstructed marker data, 6 Degrees of Freedom (6 DoF) Rigid Body data, or Skeleton data. The following chart shows what data types are available in different export formats:
CSV and C3D exports are supported in both Motive Tracker and Motive Body licenses. FBX, BVH, and TRC exports are only supported in Motive Body.
Camera Calibration Export
Export Assets Definition
Recorded NI-DAQ analog channel data can be exported into C3D and CSV files along with the mocap tracking data. Follow the tracking data export steps outlined above and any analog data that exists in the TAK will also be exported.
When an asset definition is exported to a MOTIVE user profile, it stores marker arrangements calibrated in each asset, and they can be imported into different takes without creating a new asset in Motive. Note that these files specifically store the spatial relationship of each marker, and therefore, only the identical marker arrangements will be recognized and defined with the imported asset.
To export the assets, go to the File menu and select Export Assets to export all of the assets in the Live-mode or in the current TAK file(s). You can also use File → Export Profile to export other software settings including the assets.
Analog Data Export
Recorded NI-DAQ analog channel data can be exported into C3D and CSV files along with the mocap tracking data. Follow the tracking data export steps outlined above and any analog data that exists in the TAK will also be exported.
CSV Export: When exporting tracking data into CSV, additional CSV files will be exported for each of the NI-DAQ devices in a Take. Each of the exported CSV files will contain basic properties and settings at its header, including device information and sample counts. The voltage amplitude of each analog channel will be listed. Also, mocap frame rate to device sampling ratio is included since analog data is usually sampled at higher sampling rates.
Note
The coordinate system used in Motive (y-up right-handed) may be different from the convention used in the biomechanics analysis software.
Common Conventions
Since Motive uses a different coordinate system than the system used in common biomechanics applications, it is necessary to modify the coordinate axis to a compatible convention in the C3D exporter settings. For biomechanics applications using z-up right-handed convention (e.g. Visual3D), the following changes must be made under the custom axis.
X axis in Motive should be configured to positive X
Y axis in Motive should be configured to negative Z
Z axis in Motive should be configured to positive Y.
This will convert the coordinate axis of the exported data so that the x-axis represents the anteroposterior axis (left/right), the y-axis represents the mediolateral axis (front/back), and the z-axis represents the longitudinal axis (up/down).
Reference Video Export
Reference Video Type: Only compressed MJPEG reference videos can be recorded and exported from Motive. Export for raw grayscale videos is not supported.
Media Player: The exported videos may not be playable on Windows Media Player, please use a more robust media player (e.g. VLC) to play the exported video files.
Audio Export
Export Skeleton Marker Labels
Sample Skeleton Label XML File
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