(Rev. 1.15) Using 1080p 60 fps, I started the camera running and came back to it 5+ hours later (external power supply). Checking the SD, I found many files, each covering 3 minutes. Played back, the files seem to be seamless or close to it. The question is; is there a setting controlling the duration of each file (e.g., 30 minutes? 60 minutes?)?