70mai limits

Hi, I have a 70mai Dash Cam (FWversion: 1.0.8.ww 2019-03-14) with 128gb class 10 microSD I have configured it to record in the lowest video quality possible using (usercfg.txt "VideoSize=3" it actually stores at 1280x720@30 each video file of 1minute is about 30MB) to obtain the most of the...