file size limit

I have a need for a dash cam that will record mp4 files in 30 (preferably) or 60 minute increments. (1, 2, 3, 5, 10, & 15 minute files are too small for my purposes and I do not want to have to merge small files into one larger file.) The files need to be in mp4 format and readable on a...

Reading most tech review about Xiaomi Yi; Using just the standard battery, you can record for 1hr+. But if you plug it to a power source(usb charger/powerbank), do not use the waterproof casing(to help ventilate the heat) and use 64Gb memory card. What is the longest recording time, before it...