MVN File Types

MVN has four main types of file: .mtb, .mvn, .mvno and .mvns.

In order to check the extension easily, make sure the file extension is shown in Windows 10. You can follow these steps to do so:

  1. In Windows Explorer , go to “View” tab.
  2. In “View” tab, check the box of “File name extensions” (see below)





.mtb file is On Body Recording (OBR) file. It will be saved in your Body Pack when you start or stop recording in OBR mode.

You need to import .mtb file and convert .mtb into .mvn files by using our MVN software.

For detail, please check this article: On Body Recording (OBR)




.mvn is native file format. It will be saved your motion capture data in your computer when you start and stop recording in live mode.  Also, it can be exported to other file formats. 

For detail, please check this article: Exporting data from MVN




.mvno is for MVN 2020.0 or above. It contains the positional and rotational data from Objects recorded with Object Tracking. This data can be exported to other file formats. 

For detail, please check this article: Exporting data from MVN




.mvns file contains the session data (e.g. multiperson mocap data, object data, reference video files).

This is a text file that includes the name of specific .mvn, .mvno files and/or video files. Once open .mvns, all recordings in .mvns files are opened in the same 3D viewport in MVN and edited at the same time.

The picture below shows the common format of .mvns file. You can edit it simply by using notepad.


Moreover, you can create your own simplified .mvns file. Just input the filename of multiple .mvn files (and .mvno if you have) in notepad. Then save it as .mvns. Please see below example.


Files included in the .mvns file should be saved in the same path.




.mvna is for MVN 2019 or above. It contains the body dimensions that were saved for a certain actor. This file is saved after inserting the body dimensions in the motion capture configuration window and clicking save. The body dimensions can then also be loaded from this file by choosing load and select the corresponding mvna file. 

For detail, on body dimensions:  Body Dimensions




.mvne is for MVN 2020.2 or above. It contains the data from external EMG devices with the original output frequency. This data can be visualized in MVN as graphs or exported to other file formats, such as excel and mvnx. 

For detail, please check this article: EMG integration

Was this article helpful?
0 out of 0 found this helpful
Do you have a question? Please post your question in our Community Forum