Repair damaged video file

Question

Video processing

Good day, HabraPeople.

There was a sad situation that the video file from the registrar on the car was damaged - several megabytes were overwritten from the beginning of the file. That is, information about indexes, key files is lost. The media on which the file was located is an SD card. Video container, so to speak, AVI.

Are there any ways to restore the essentially binary data stream in the video at least partially? For example, based on the whole file from the same registrar? Several data recovery companies said it was impossible/they couldn't handle it. If it helps, the city is Novosibirsk.

Any utilities like DivFix are powerless here, because even the file format is not recognized.

For ethical reasons, if the owner of the video does not mind, I will post a video for experiments.

Sorry that I will not promptly respond to the answers for the next 6 hours - I will be busy. But I think the question is clear enough. Perhaps someone has already encountered a similar situation.

Answer 1

The issue was resolved by googling about the mjpg format, in which, as it was established, the video recorder wrote, and by simple editing in a hex editor. Copied a header from another file of a sufficiently long length.
What struck me was that two data recovery companies failed to do the job. I think it's a fail.
So the question is closed, thanks for your interest!

Answer 2

Put the file if the owner does not mind (you can also in a personal). And put 1 more file from the same registrar, but not broken. I can't promise results, but I'll tinker with it.

Answer 3

If it is beaten not at the beginning, but in the middle, then this usually helps
(Rebuilds the container without compression)
Works under any platform.
mencoder -o out.avi -noidx -oac copy -ovc copy broken.avi

Answer 4

Good afternoon. Help! How to recover a corrupted file using a memory card on your phone. The amount of memory is, but writes the file is corrupted (((
thanks

Answer 5

Good evening! Need help recovering a file from the registrar.