Thank You tinkermeister, I am going to look into that.I could be wrong but this might have something to do with your video having a problem: Understanding File-Size Limits on NTFS and FAT
If you right click on the drive letter then look at the properties it will tell you the drive format being fat32 or ntfs or even fat16. One other problem might be if you run out of battery before the clip is finalized the file does not get saved. Your best answer would come from the manufacturer of the camera.
I will try to video with helmet cam the entire main event, I hope for the best. But do not be to disappointed guys if I end up with no video. I will still have plenty of photos I hope.