Ristretto doesn't rotate with respect to EXIF data

[Stephan Arts]

On Dec 10, 2007 2:46 PM, (none) <dark_mail at gmx.net> wrote:
> Erik Harrison schrieb:
>
> > On Dec 10, 2007 2:03 AM,  <dark_mail at gmx.net> wrote:
> >> Stephan Arts schrieb:
> >>
> >>> On Dec 10, 2007 1:23 AM,  <dark_mail at gmx.net> wrote:
> >>>> Both the versions (didn't test earlier ones) 0.0.14 and 0.0.15 seem to
> >>>> ignore the orientation information in EXIF metadata, thus not rotating
> >>>> pictures, although the changelog for 0.0.6 claims different (if I read
> >>>> that one correctly).
> >>>>
> >>>> I checked that EXIF data are stored with the pictures (jpeg format), and
> >>>> manual rotating works.
> >>>> System is Gentoo Linux 2.6.23
> >>>>
> >>>> Is that issue known, or is there an error on my side?
> >>>> Can give more info if needed, after a cup of sleep ...
> >>> Are you sure the EXIF-data is correct?
> >>> I have seen several times that even though cameras store the EXIF
> >>> data, (and the Orientation tag which is used to rotate the image) the
> >>> Orientation-tag does not give the correct information.
> >>>
> >>> -
> >>> Stephan
> >>> _______________________________________________
> >>> Xfce mailing list
> >>> Xfce at xfce.org
> >>> http://foo-projects.org/mailman/listinfo/xfce
> >>> http://www.xfce.org
> >>>
> >> Seems like you are right.
> >>
> >> But still it is a bit weird.
> >> Pictures from my Canon A630 are rotated properly with DigiKam, they have
> >> an "Orientation" and an "Auto Rotate" tag, pictures from another camera
> >> have only the "Auto Rotate" tag, and those are rotated by Ristretto
> >> correctly.
> >> But even if I change the AutoRotate and the Orientation tag by hand,
> >> still my pictures aren't rotated at all (changing from 270 CW to 90 CW
> >> should make a change, after all). I even deleted and later readded the
> >> Orientation tag, still no luck.
> >> exiftool and exiftags show the tags, so I thought the format should be
> >> fine, but it looks like it's not.
> >> What's happening here?
> >
> > I realize that it's not my application, and I'm not hugely
> > knowledgeable on the subject, but would it perhaps be handy to post
> > the exif data itself?
> >
> >> _______________________________________________
> >> Xfce mailing list
> >> Xfce at xfce.org
> >> http://foo-projects.org/mailman/listinfo/xfce
> >> http://www.xfce.org
> >>
> >
> >
> >
> Here you go.
> Ristretto only refuses to rotate the pictures of my PowerShot, the
> pictures of the other camera models (IXUS and D400) don't give me any
> problems.
> Strange
>
> By the way: What library/program does Ristretto use to get the EXIF data?

Ristretto uses libexif.

Could you please execute `exiv2 -pt {filename.jpg}` and post the results?

I am having a hunch, but I need that data to confirm.

Regards,

Stephan