help fixing corrupt JPG files

[EZZ1253]

I accidentally left some images in JPG format for long-term storage. Some of the images have gone bad, with bits corrupted. The images open as corrupted graphics in Preview, Photoshop, and Graphics Converter, and will not open in iPhoto. When opened, the top parts of the images are normal, but the parts that follow the corrupted sections are both color shifted and pixel shifted.

Where can i go for information on fixing these images. I'm searching for instructions on how to either code around the error or a program that can help identify and correct the errors.

Please note, the following circumstances do not apply.


This is not a Windows registry issue. I'm on a Mac.
This is not a problem with a corrupt drive or memory card. I have seen many programs that claim to fix images like this, if the image happens to be on a corrupt or deleted drive or memory card, but i have not found any programs that will actually work on an image file directly.



Thanks for any help people might be able to give.

[MisterMe]

....

Where can i go for information on fixing these images. ...Google is your friend (http://www.google.com/search?client=safari&rls=en&q=JPEG%2Brepair&ie=UTF-8&oe=UTF-8).

[EZZ1253]

Google is the obvious answer. It is also the first answer i tried. Unfortunately, there are no solutions on anything i've found, nor on the page you offered.

Please keep in mind that i had two qualifications.

1) I am working on a Mac, so no software for Windows (registry problems or otherwise) will help me.

2) I am not trying to recover corrupted files from a damaged disk or memory card.

I need some way to correct corrupted JPG files that are on my working hard drive on a Mac OS 10.5 machine (i also have a Mac OS 10.4 machine).

Thanks

[rhett7660]

Have you looked for the invalid jpeg markup error? I have seen this before on a windows box. It almost sounds like what you are talking about. Try doing a search for that also. If you can open it up in photoshop, have you tried resaving it? Or when it opens in photoshop it looks bad also?

[EZZ1253]

It looks bad in all of the applications i open it with. Fortunately, it looks bad in the same way, so i know it's something fairly simply in the encoding.

[nfable]

But I've lost hair over some .jpgs I thought were ruined, turned out I have saved as a .PSD with a .JPG extension - A 'get info' and manual change of the extension to .PSD solved it, but your prob sounds a bit more...