On Wed, 8 Aug 2007 11:44:10 +1000, "Greg" <greg.munro@bigpond.com>
wrote:
>Recently Vista networking/filehandling/PhotoGallery corrupted some of my jpg
>files by trashing the jpg markers.
>
>Does anyone know whether it is possible to use a text editor to replace the
>headers with an intact JFIF header from an uncorrupted file so that software
>can recognise it as a jpg again? Or is each header so integral to that
>particular image (in terms of defining size, etc) that you can't do that?
>And if it is possible, where do the Jpg headers start and end? I don't read
>hexadecimal! (Or whatever that spaghetti is)
>
>There doesn't seem to exist yet any recovery software that works for Vista
>that can recover my files.
You're getting into the tall grass and probably at minimum need a hex
editor. There's more involved than simply substitution. If you want to
give it a shot this may help:
http://www.martinreddy.net/gfx/index-hi.html
Follow to the JPEG link under 2D bitmaps then also check out the FAQ
and tools section.