it is possible ... but messy.

you'd have to write a program that can process the jpeg (jfif) file 
structure and replace the profile.

I have written a similar program "JPEG & PNG Stripper" 
(http://www.steelbytes.com/?mid=30) that can remove profiles* and other 
uselss metadata from jpeg (and png) files.

*if the profile is sRGB then removing it won't hurt as that is what most 
progs will assume when load an image without a profile embedded.

Louis Solomon
www.SteelBytes.com

----- Original Message ----- 
From: "Guillaume Dargaud" <[EMAIL PROTECTED]>
To: <lcms-user@lists.sourceforge.net>
Sent: Friday, June 29, 2007 6:03 PM
Subject: [Lcms-user] Substituing a profile in a jpg file


> Hello all,
> this is probably an elementary question, but how do you substitute a 
> profile
> in a JPG file without touching the bits ?
>
> If I do:
> jpegicc -i$AdobeICC -o$AdobeICC Input.jpg Output.jpg
> The file gets recompressed
>
> I also tried
> jpegicc -n -o$AdobeICC Input.jpg Output.jpg
>
> The reason I want to do that is that my files contain AdobeRGB profiles 
> that
> are not recognised by some apps. I want to substitute with another similar
> profile that _is_ recognised, without changing anything else (exif info,
> bits...)
>
> Thanks
> -- 
> Guillaume Dargaud
> http://www.gdargaud.net/
>
>
>
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