I have seen other dash cam playback footage showing the front, and sides at the same time. Firstly, I use an iMac. On mine, I have to choose whether I view the front or the left side or right side. How do I show all three at once? Also, when I open my USB, there are two different types of folders shown. One is a quick time player with the quicktime folder displayed on the left, the other is a picture of an actual frame of the movie. When I click on the quicktime folder I get this message: "QuickTime Player can't open 2019-06-29-_16-34-51-right_repeater.mp4". Why can't I open it?