On the THETA X, I did notice that there is a CAMM data track on the 8K 2fps video. However, I have not been able to parse it for the sensor data yet.
If you search for this forum, you’ll notice that there is a Google Streetview app that works with the Z1 using low framerate 6.7K video. I’m assuming that there some type of GPS data per frame to get it to work with the 6.7K video. However, this information was not disclosed.
If you have a potential product that may use the THETA Z1 in high volume, we can ask RICOH about this and see if we can get any additional information. You can send an email to email@example.com about that.
If you are in a research institute, the best path is likely to use the separate GPS track with timestamps.