Wrong exif jpeg orientation

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Corrado Gizzi

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Mar 6, 2007, 6:30:11 PM3/6/07
to jBrout
Hello!

I noticed that some exif jpeg image are shown rotated wrong on jBrout
whereas other Linux jpeg manager, such as Gthumb or even Nautilus
previews are shown with correct orientation. If I rotate them I get
right image in jBrout but wrong on other clients...
Any clue?

Regards,

Corrado

manatlan

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Mar 7, 2007, 7:57:29 AM3/7/07
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jbrout, like no any other programs, use the internal "EXIF thumbnail" ...
it's an exif info which contains the minimez version of the jpeg ....which is already in the jpeg !!!

if your thumbnails are rotated wrong against the original, it's mainly because you had used a program to rotate them which doesn't rotate "INTERNAL exif thumbnail" (a bad program ;-)!!!

(I think i should write a faq entry on this, because every month i must say that, in this forum ;-)

Corrado Gizzi

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Mar 7, 2007, 5:05:46 PM3/7/07
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Hello!

Wed, 7 Mar 2007 13:57:29 +0100
manatlan <mana...@gmail.com> wrote:


thanks for the info; but then how do you explain the fact that after
adjusting the "exif jpeg" orientation with jBrout I get wrong orientated
previews on gThumb and Nautilus ( just two say two popular programs
that I use)?

Regards,

Corrado

manatlan

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Mar 8, 2007, 3:37:09 AM3/8/07
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thanks for the info; but then how do you explain the fact that after
adjusting the "exif jpeg" orientation with jBrout I get wrong orientated
previews on gThumb and Nautilus ( just two say two popular programs
that I use)?

JBrout doesn't touch the "date modification time" of the picture (in a near future : it will change)
so i think nautilus and other are not able to regenerate the ".thumbnails file", according date.
If you manually regenerate them, it should be ok ...

Regards,

Corrado

marc

Corrado Gizzi

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Mar 8, 2007, 6:52:15 AM3/8/07
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Thu, 8 Mar 2007 09:37:09 +0100
manatlan <mana...@gmail.com> wrote:

Thanks for your answer!
What I was missing was that jBrout rotate both the image file and the
image preview inside Exif whereas other apps don't.
The tricky thing was that gThumb does actually show exif info together
with a thumbnail and I assumed that that was the efix image preview, but
it isn't :)

Regards,

Corrado

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