OK it seems I made the mistake of recording Christmas morning in 4K 60 fps. Now I'm accustomed to recording 2-3 minute videos, and transferring to my PC with no problems. But this video is about 35 minutes long and can't seem to complete the process without an error message saying "something went wrong. (after 2 hours downloading). My son even tried transferring to a cloud program and that didn't' work either. What can I do to save the video? Thanks.