@KathleenHoenke I doubt that the Go Pro Max would support MISB as it is a consumer grade camera. I might suggest a Garmin VIRB Action Camera. There is a good article that discusses these and ArcGIS here
The Garmin VIRB cameras record GPS and camera orientation data with the video. This position and orientation metadata enables FMV for ArcGIS to locate the sensor on the map, and if the camera footprint (field of view) is aimed toward the ground, the moving video footprint can also be displayed in ArcGIS.
Cheers
Gordon