Trying to deal with split files on a gopro is just ridiculous. After a bunch of googling and trying to figure out how to put all of the files together, I tried doing it with the app. It kind of worked, but there's no way to upload the resulting video to my gopro cloud account! I can upload the individual videos, but I can't upload the single video that was produced by putting the files back together. It's absolutely incredible to me what a hassle using a gopro is. You can't just take a single video and have a single file. Even putting a file back together has issues. At the 1-hour mark, my video just turns black. I also took a video that somehow ended up sideways, even though the camera was seated correctly. Only one of four videos did this and the camera was in the same position the whole time. I tried to rotate it with this app, but it DOES NOT WORK. I just want the video to play in the correct orientation, but it won't. The app rotates it and then cuts off the sides. Unbelievable. This thing is absolutely beyond frustrating. I guess I'm going to have to purchase some software just to get a regular video off of my camera with the correct orientation. I really, really, really hate this gopro.