Sometimes these cameras make a bad file and it's back to the maker to tell you if it can be recovered.
If all the files are bad then you talk to the maker what to do next. Here I try a reset and a format of the card to see if I can save the camera.
I've tried to pull a video from my dash cam - but i think i pulled out the SD card whilst it was still recording - so the video won't play - showing code error 0xC00d36E5!
tried changing to AVI file and using VLC player, to no luck - advice appreciated.