Mi Sphere 360, where is stored the gyro data? I bought a Xiaomi Mijia MI SPHERE 360 Camera, it has an embedded gyroscope. The iOS app allows exporting stabilized movies combining the video and gyro data.

The camera records .mp4 files of the following format: ISO Media, MPEG v4 system, 3GPP JVT AVC [ISO 14496-12:2005]

I would like to retrieve the gyro information of my movie along the movie. I can imagine there is exif like metadata for each frame where the camera would store specific information but I have not found any way yet to put the hand on it.

How could I retrieve the metadata per frame containing this information?

[Edit]
Here is a github project containing 2 short (10sec) clips I made. I recorded in the dark. One is steady (camera laid on the ground) the second one shaking. Both have a useless? audio track.
The data are stored within the file disregarding of the .mp4 file standard.

the chunk containing those per frame data starts with: #¿Ttlyd or 23C05474 6C7964in hex


Each frame has 36 bytes of data, those seem to be 9 floats of normalized (from -1 to 1) numbers

Those numbers seem to be a 3x3 matrix representing the current coordinate system for this frame.