Re: [PLUG] corrupt jpeg

["John Sladek" <jsladek@comcast.net>]

I've had this happen when ftp'ing graphic files with out changing to binary
mode first.
Not sure if that helps..

John Sladek

----- Original Message ----- 
From: <eric@lucii.org>
To: "PLUG" <plug@lists.phillylinux.org>
Sent: Friday, September 10, 2004 6:27 PM
Subject: [PLUG] corrupt jpeg


> I have two identical jpeg files that are *not quite* identical :-)
>
> The issue is that I've seen this kind of corruption before with
> some of my jpeg files.  Here are the images:
>
>   http://www.lucii.org/eric/Now-Is-Calling-1.original.jpg
>   http://www.lucii.org/eric/Now-Is-Calling-1.entropy.jpg
>
> These are from a package called "Propaganda" that I happened
> to have two copies of on the same hard drive (no, not that one!)
> The corruptions occur in several of the images in one directory
> tree - but not the other
>
> Using od -h and sdiff, I've found the difference is a single
> byte: (don't ask me which is which)  :-)
>
>                                            V
> 0063060 ea55 29fd f004 83c0 3fb2 f93a 899e f529
> 0063060 ea55 29fd f004 83c0 3fb2 f93a 899e 9529
>                                            ^
>
> What concerns me is how it happens and what intrigues me is
> if there is a way to fix it :-)
>
> As usual, google searches return lots of links for software that
> I can buy.  Most, if not all of it does not solve this problem.
>
> Has anyone seen this before or have any thoughts on how to
> deal with it?
>
> Eric
> -- 
> #  Eric Lucas
> #     "Oh, I have slipped the surly bond of earth
> #      And danced the skies on laughter-silvered wings...
> #                             -- John Gillespie Magee Jr.
>
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