Tutorial Video: Remote On Body Recording (rOBR)
Remote On Body Recording (rOBR) makes it possible to set up and activate multiple Bodypacks for On Body Recording through a wireless connection. It also synchronise the data between all the selected Bodypacks.
- In the MVN 2019.1 (Beta) version, rOBR is called Wireless OBR. The main functionality is the same.
- For rOBR to work, the Firmware on the Bodypack requires an update (see https://base.xsens.com/hc/en-us/articles/115001481789-Release-Notes-MVN-Software)
- MVN 2020.2: Wireless Data Transfer (Make sure to update the hardware with the latest firmware. See MVN 2020.2)
You can find the Remote OBR feature in MVN under OBR > Remote OBR. This will bring up the new window (see image below)
You can add Bodypacks by connecting them to your wireless connection (e.g. Access Point).
In the list of Bodypacks, you have the following information:
- Selection and Status of Bodypack
- Bodypack ID
- Bodypack Name
- Recording state
- Battery level
- Connection power
- Recording time left (HH:MM:SS)
- The sync status of the connection
Selecting a Bodypack in the list (image below, A) will bring up the System Configuration window (image below, B).
The On/Off toggle button should automatically be set to On (this enables Remote OBR functionality).
In Configuration window, you should input your actors body dimensions (in Body Dimensions tab). This is mandatory otherwise you cannot start On Body Recording. Also, you can select to have prop (in Prop tab), GNSS (in Position tab) as well as fingers tracking (in Fingers tab) used in the rOBR.
Once all Bodypacks are set up properly, you can start the OBR session by pressing the Start Recording button.
The recording will start after the set Recording Delay. To ensure the time synchronisation between Bodypacks, it is important to set the Recording Delay higher than 0 s.
- The calibration process is the same as in regular OBR (except that the recording is started wirelessly).
- The import files process is the same as regular OBR.
You can stop the OBR session by pressing the Stop Recording button. Afterwards, you can access and use the data the same way as in regular OBR.
To disable the Remote OBR, you can close the rOBR window (image below, step 1), then confirm close window will be popped up. In Confirm Close window, press "Reset" (image below, step 2). All the Bodypacks will be turned back to live mode.
Wireless Data Transfer
From MVN 2020.2 onwards, you can transfer OBR file (.mtb) from Bodypacks to your computer wirelessly. Make sure to update the hardware with the latest firmware. See MVN 2020.2
- Turn on wireless data transfer checkbox
- Progress of File Transfer
- Convert OBR file into .mvn file
Turn on wireless data transfer checkbox
In the bottom of panel, you can find two checkboxes and one user input (see below picture).
- Automatic Download: If this box is checked and Bodypacks are successfully connected via WIFI, OBR file (.mtb file) will be automatically copied from all connected Bodypacks to your host computer. When the file is being recorded, it will not be transferred. Once a recording is finished, it will be automatically transferred for that file. Unchecking this checkbox will stop any active file transfers.
- Remove After Download: If this box is checked, OBR files in Bodypacks will be deleted after successful transfer.
- Download Path: This path is the destination path for saving .mtb file. You cannot change the path during file transfer.
Progress of File Transfer
In the list of Bodypacks, two additional columns are shown during file transfer (see below picture).
- File Transfer: It shows transfer progress in a percentage for the file currently being downloaded.
- Remaining Files: It indicates how many files are still remaining in the transfer queue.
Convert OBR file into .mvn file
When OBR file is successfully transferred to your computer, you need to convert them into .mvn file.
To do this, go to OBR > Import OBR files (.mtb). Select Local Directory and enter input path (i.e. the folder storing OBR files) and output path.
More information can be found in this Base article: On Body Recording (OBR) , Session 3 Import Recordings, no. 4.