[Digikam-users] tools --> creat mpeg slideshow portrait problem

[Arnd Baecker]

On Sat, 12 Jan 2008, cotcot wrote:

> I think I have solved the mpeg slideshow problem.
> I have done a couple of tests to understand better where the 'rotate photo'
> is stored and which rotate info is used during mpeg rendering.
> If I rotate a photo with digikam or gthumb the exiv data do not change. If i
> do so with gimp the exiv data change.

Image rotation is handled by:
  Product:	kipiplugins
  Component:	jpeglossless

To me this sounds like a bug which has been fixed,
maybe this one:
  http://bugs.kde.org/show_bug.cgi?id=148621

I think this fix was done after your version
kipiplugins 0.1.4-1build1  (ubuntu gutsy)

> If a portrait photo is shown as landscape i have 'right-top' in the exiv
> data. Turning it with digikam or gthumb is still 'right-top'; when i open a
> 'right-top' photo in gimp then gimp asks automatically to correct the
> orientation. Answering yes makes the exiv data change to 'top-left'.
> Making a slideshow with digikam, kdenlive or cinelerra shows the photos with
> 'top-left' correctly.

the slideshow should also auto-rotate images correctly ...

> So the digikam mpeg slideshow problem seems solved. I am now somewhat
> confused with the photo orientation. Obviously it does not make sense to
> rotate photos with digikam if you render them to a slideshow with digikam or
> any other tools ? Or do I need to thick 'Embedded preview of the full image
> size' in the Album settings' ?

Everything should work without any additional thoughts.
In current version most of the image rotation issues
should be solved.
If you observe a problem with the latest version,
i.e. digikam 0.9.3 and
kipi-plugins 	0.1.5-rc1
libkipi 	0.1.5
libkexif 	0.2.5
libkexiv2 	0.1.6
libkdcraw 	0.1.3
(see http://www.kipi-plugins.org/drupal/?q=node/5)
and exiv2 0.16 (http://www.exiv2.org/)
then please file a bug report in the bug tracker.
(Note that to check this most likely will mean
that you will have to compile from source ...)

> And another question is that my digital camera (Canon 350D) sometimes does
> the orientation correction and sometimes does not. This needs some
> experimenting but has nothing to do with digikam.

I also have that camera and rarely encounter orientation
problems. Only for very wierd shooting angles
the orientation detection gives incorrect results ...

Best, Arnd