I have seen previous threads regarding the need for a high capacity SD card for long recordings as well as needing to keep the camera cool. I have to record a in person training session and already have a 256gb card for the Hero 7 as well as a couple of back up batteries, but the question is that i read that I can maximize the card by changing the settings to record @ 17mbps, but cannot find anything as to how or where to change to those perameters. As for batteries, is it possible or recommeded to run this off of a battery brick (Like what you haul around to keep your phone and other items charged)?
