This is a video portraying the pipeline for exporting paintings in Tilt Brush for the HTC Vive into your favorite game engine.
You will need to follow the instructions on the following page to install the JSON to FBX exporter:
https://www.reddit.com/r/vive/wiki/tiltbrush
You will need a version of Houdini or Houdini Indie to use my exporter tool. See: http://www.sidefx.com/
You can download the exporter tool here: http://nielsvdiermen.com/wp-content/uploads/2016/04/FBXColorExporter.zip
My website: http://nielsvdiermen.com
Music by Psychoholic: https://soundcloud.com/psychoholic1
Tilt brush art by: Sarah Northway