HELP! broken mp4

[RWB713]

Forgive the newbie status, but i desperately need some help.

I have been recording with my GoPro camera and have never had a problem until now.

I was recording on a race car and due to a collision the camera mount was broken and the camera fell off the car, the camera is fine, works great still, records perfectly fine video files still on the same SD card. But the file that was recorded that night cannot be played in quicktime or windows media player due to the following errors:

Quicktime: Error-2048 could not open the file because it is not a file that quicktime understands

WMP: Encountered a problem while trying to play the file

I assume these problems are because the file was never finalized by the camera

i took the SD card to Best Buy (sorry ) and they told me that the file needed to be converted to a vidoe file (mpeg-4 is what the camera normally records the files in, so my attempts have been to convert to that) i downloaded VLC (suggested by best buy) and it will "open" the file but there is nothing to play, and when i attempt to convert the file it just creats a file that is 4KB big and thats it, doesn't give an errors or anything

Please help! the file is there, it's 2GB in size and still shows as an MP4 file in folder view, and i'm told it still salvageable.... any ideas? let me know if you need more info and i'll see what i can get for you I'm semi computer literate but have never been real involved in any video editing really

Thanks!

[davexnet]

Try the repair program mentioned at the end of this thread:
https://forum.videohelp.com/threads/247052-mp4-repair

[lowellriggsiam]

Two + times per week this problem shows up and their is no definitive solution. https://forum.videohelp.com/threads/333853-Video-nightmare-Cannot-open-mp4-please-help?...000&viewfull=1 from an earlier thread that may contain some help.

[Jackie7248]

After a week of trying every program I could find and uninstalling tons of toolbars and other "freeware" goodies that come along with the download, I finally found one that works. The problem is it cost a ton of money. They want a certain fee for a few fixes and then even more for unlimited use. The demo allows you to see if the program works, but only fixes half the file. Then it corrupts the original so that you can't refix it. Crazy. But it does work.

My issue was a hard reboot on a GoPro after recording over 40 gigs of video. SD card wiped. Used a recovery program to get the files back. The recovery program chopped 10 video files into 40--none of them open except in iTunes media player as a green screen. But at least no error codes. File size is still there.

http://grauonline.de/cmsimple2_6/en/?Solutions:HD_Video_Repair_Utility#purchase

This program, which in demo mode, fixed one of the files partially seems to do the trick. I don't know if I trust the payment utility or want to spend 99 Euros on it...I think that is well over 100 bucks.

I'm going to put my 40 chewed up bits of GoPro video in my "to do" file and wait until some altruistic programmer of like-mind offers me a similar program for less than half that price and I'll bite.

But for those of you who NEED to fix a broken or post-recovery mp4, try it out. It also gives you some other data -- a log of what it did, what if found, the codec, the file extensions actually used in the mp4 etc.