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Exporting data from MVN Studio

This article discusses how to export, view, and choose the options for exporting data from MVN Studio.

To access the export options for MVN Studio, navigate to Options > Preferences > Exporters.

 

Here you will see the various subsections for exporter options: Filtering, BVH, C3D, FBX, MVNX, Movie Exporter

Filtering

Exporter smoothing - The highly sensitive sensor modules capture every twitch and deliver very crisp data. For some applications, more smoothed motion data is desired, which can be applied by enabling “Exporter smoothing” in the preferences. The Export Smoothing Filter does not introduce a phase lag. 

Output filtering - The LXsolver exports the data to a form that minimizes soft tissue artefacts and joint laxity while keeping the feet at place. By default it is active on FBX and BVH and performed after the smoother.

BioVision Hierarchical Data (BVH)

 

BVH files embeds captured motion data in ASCII format which can be imported in many animation applications.

Exporter frame skip (for downsampling) - skips every n frames (n = 0 to 10) of the original file (after smoothing) in the output. Note that if no smoothing is specified, no smoothing will be applied when using frame skip.

Overwrite first frame with T-pose - T-pose will be inserted before the first frame of the data.

Output preset - Motion Builder, 3D Studio Max, Poser 6

Output unit - there are a few options available: millimeters, centimeters, decimeters, meters, kilometers, feet, inches

Coordinate 3D (C3D)

 

C3D files is a file format designed to contain 3D coordinate data, usually in the form of bony landmarks.

Exporter frame skip (for downsampling) - skips every n frames (n = 0 to 10) of the original file (after smoothing) in the output. Note that if no smoothing is specified, no smoothing will be applied when using frame skip.

Overwrite first frame with T-pose - T-pose will be inserted before the first frame of the data.

Output data format - Most systems accept the 16 bit integer output format. However, when this is not the case, the single precision floating point (IEEE 754) can be chosen, which will enhance resolution (less output quantization).

Allow files containing over 65535 frames - In the past C3D was designed to accept no more than 65535 frames. Tick the box to allow trials longer than 65535.

Point set - There are two lists of points that can be exported, “All available points” and “External Points”. External Points are included in the “All available” selection

Filmbox (FBX)

 

FBX files is a platform-independent 3D file format which gives you access to content authored in software packages such as MotionBuilder, Maya, Unity or Softimage and  contain both position and orientation information of all 23 segments.

Exporter frame skip (for downsampling) - skips every n frames (n = 0 to 10) of the original file (after smoothing) in the output. Note that if no smoothing is specified, no smoothing will be applied when using frame skip.

Overwrite first frame with T-pose - T-pose will be inserted before the first frame of the data.

Output preset -  option to choose “Default” and “Skeleton”. “Default” export contains position and orientation information of all 23 segments in global coordinates. “Skeleton” export contains skeleton hierarchy information in a way that is used by many common 3D software packages like MotionBuilder, Maya, Unity and Houdini.

Output unit - there are a few options available: millimeters, centimeters, decimeters, meters, kilometers, feet, inches

Time increment mode - fixed and dynamic

Start at - 0 and real time

Apply the unroll filter - Filter to apply continuous rotation values to animation curves. Due to Euler rotation properties, when a rotation angle cross over the 180 degree value, it becomes -179. This filter tries to keep a continuous rotation effectively by producing increasing values, to actually become 181 degrees, etc...

Walk on the spot - fixes the avatar to the orgin

MVN Open XML Format (MVNX)

MVNX contains as default, 3D segment and position data. Additional values can be exported as shown, including: 3D Position, linear and angular acceleration and velocity of all 23 segments. 3D Joint angles of 22 joints. 3D Orientation, acceleration, angular velocity and magnetic field data of all 17 MT’s.

MVNX Version  - Allows you to choose which version you'd like to export as 3 or 4

Exporter frame skip (for downsampling) - skips every n frames (n = 0 to 10) of the original file (after smoothing) in the output. Note that if no smoothing is specified, no smoothing will be applied when using frame skip.

Movie Exporter

 

Exporting movie data enables the user to export the 3D viewport of MVN Studio to either .m4v or .avi. this facilitates presenting MVN information to audiences without the need for installation of MVN Studio

Resolution  - Allows you to choose the desired resolution for export. There are multiple options all the way up to 1080P.

Frame rate  - Allows you to choose the desired frame rate for export up to 120

Encoder - mpeg-4 and avi is available

Exporting the Data

In order to export the data you will need to navigate to File > Export.

From there you have a few options: Export File, Export All Open Files, Export Selection, Batch Export

Export File

You can specify the output path, output name, and then choose the type of exporter you want to use. You can also append the suit name as well.

Export All Open Files

You can specify the output path and then choose the type of exporter you want to use. You can also append the suit name as well.

 

Export Selection - you can highlight the frames in your recording which you would like to export.

You can specify the output path and then choose the type of exporter you want to use. You can also append the suit name as well.

Batch Exporter - For exporting an entire folder

You can specify the input and output path and then choose the type of exporter you want to use.

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