Replying to Unintentional Short Videos?

Last weekend I was  filming and when I looked at my videos, about half of them were only 6-10 seconds long!  I may have accidentally pressed the record button more than once, but on some of them I know for a fact I did not (even if I did, how would I get a 9 second video of dropping into a jump?)

I'm going to play with it more until I get it all figured out, but if anyone has some tips on what to look at I would appreciate it.  It was on video at 60 frames per second.