I looked into this a while back but it looks like BI uses a proprietary database format.
At least I couldn't figure out how to read the db or bvr files.
My use case was that I wanted to 'manually'* add / import footage to the db from mobile recording devices (eg. dashcam & body cameras).
Files from these devices are created with the name of the device and a timestamp. I was looking for a way to import footage into BI so each device would show up as a camera, and footage can be scrubbed through on the timeline view, playback of multiple devices can be synchronised, etc.
...*By 'manually' I mean via an external program that watches for an SD card to be inserted, checks for valid filenames then copies the files and adds them to the BI database.