Ive just been trying for hours to make a video but my laptop wouldnt let me split the mp4 so I could select different scenes. I then noticed that the sd card was showing up as "sdhd, dcim, ųmedia" thats when I realised it was corrupted. Ive finally got the video edited but I had to jump through hoops by loading it into my tablet and splitting it there but I still couldnt transfer the individual video files to my laptop. I had to dropbox them and then download them to the laptop and finally was able to make the video. A process that should have taken an hour or so turned out to be 7 hours. I never normally format my micro sd but will be doing so in future. Anyone come across this? I'm using a samsung 32gb class 10.