Hello, Hiking Yosemite Half Dome Cables which takes at least 20 minutes. Settings are 1080, 60 fps and wide. Newly formatted 64GB card only has 4:21 length allowed. Which settings are appropriate and is there any way to get more video time from the card? If I use 128GB card, will I get double time time even though 64GB is supposed to be the max size? Total newbie so any advice would be greatly appreciated, thanks!