Hi,
I'm just getting started with our OptiTrack systems. We are going to want to correlate data taken with the mocap rig with external sensor data. Timing precision of ~1 ms is probably good enough for us.
My plan was to stream NatNet data to a custom app that would also integrate data from 3rd party cameras and ROS messages. However, I can't figure out how to get the absolute time from the NatNet packages. The fTimestamp element seems to be time-from-Motive-startup. This would be fine if I knew what time of day (seconds since epoch or whatever) that Motive started up, but that doesn't seem to be present in the API.
Buying hardware for this seems absurd; we don't need very fine timing and NTP is probably sufficient to get the systems synced.
Any suggestions how to do the absolute timing?