Fairly common when someone goes down at the track. I think the SIM card gets jolted and pops loose and zaps the file. I doubt you'll recover that particular file/video but would like to know if there is a way.I have the sim card....I copied the file but I can't open it....tried a few things....if anyone knows how to do it I can forward the file. I'd love to see it too! It's a big file though