How to repair a damaged jpg file in iphoto Library

Question

I hace some damaged jpegs in my iphoto Library which i want to repair. I've used stellar software but no results.
does anyone know a really good tool to repair jpegs?

Answer 1

civil engineering wrote:
You 're wright, i didn't provide you details how the matter occurred and what kind of damage there is.
So i give you the link of another discussion i've opened to look at.
Mac Pro 3.1 os 10.8.5
iphoto 11 problem with showing up some photos
In your other post, you indicated that
"The whole matter occurred after disk defragmentation with Tech Tools pro 7 or Drive Genius 3, I don't remember which of them i used to the disk that iLibrary exists … Also disk warrior reports that "Detected that the resource header is damaged and cannot be repaired!" "
The jpeg repair tool you were using can sometimes recover a photo file if several pixels are missing. Typically the photo is recovered with some black portions corresponding to those missing pixels, probably not optimal but better than nothing.
Unfortunately, your mention of "defragmentation" in connection with the corrupted files is alarming to me. Files on a computer are not stored in one single place, they are typically stored in pieces all over the physical disk. The file catalog provides a map that the computer uses to put these pieces back together when you, say, view a photo. Defragmentation is almost never required for a modern Mac, and if one exercises a defragmentation tool on a system that has a few small directory or catalog problems (caused maybe by a computer freeze or a forced restart), those can become magnified as all the myriad file pieces are moved around ("defragmentation" tries to unify as many of those pieces as possible by physically moving them around on the disk). Which is why making an archive backup is always necessary before defragmentation -- but disk defragmentation is not needed anymore with modern operating systems, I wonder why you would use such a tool as the benefits are small or nonexistent but the potential to greatly magnify a small issue into a big problem is significant.
Well, that's history now, but you can perhaps try a few of the other jpeg fixing tools that are commercially available. Also, try opening the problem jpegs with some other programs, such as Adobe Photoshop or other software. I fear that your corrupted jpegs are really a symptom of more systemic directory or disk problems. I would (a) back up everything securely [two backups is extra safe], and then (b) run your Apple hardware test suite to test your hardware as a failing hard disk and/or memory can lead to such unfixable file corruption, and if (b) shows everything is ok, then (c) run Disk Warrior to try to detect and repair whatever directory corruption exists. The jpegs may not be fixable, they may be missing essential file components, sort of like losing the first 20 pages and last 20 pages of a 200 page novel plus getting the chapters out of order and losing the chapter numbers, you might never be able to figure out the story in the novel if those pages cannot be found and the right chapter order cannot be determined.