Do NOT record on the card again beyond trying to use the cam to view it with. Insert the card, let the cam start normally (even if it records then), and then use the menu to try viewing the last file. After that, shut the cam down normally. If you saw what you need then the file has been repaired and saved. Now you should be able to view and save it on your computer. Try to view it there again even if the cam didn't show it using VLC player or registratorviewer.
Thanks
@kamkar1 for reminding us of the file repair function in registratorviewer- I had forgotten about that and I'll give it a bookmark now for future use
Use that if you've not gotten results yet. I'm wondering if it would be worth trying dashcamviewer here? I don't know if it has this kind of advanced feature in it or if
@traveler could offer any assistance with this as he understands how these things work much better than I do. I'm pretty much at the limit of what help I can offer at this point but I'll watch this thread and continue doing what I can.
Phil