[Digikam-users] Loosing all Metadata when editing

[Gilles Caulier]

Any debug trace if you run digiKam on a console ?

Gilles Caulier

2010/7/26 Max Bedacht <bedachtm at gmail.com>:
> I'm not sure what code bases are being used (I am using a standard Ubuntu
> 10.4 installation (32 bit) with DigiKam installed with the Synaptic Package
> Manager).
>
> There seems to be some irregularity with the problem - not occurring the
> same way all the time - but since I have been verifying step by step I have
> not isolated anything other than I described in the first message.
>
> I did discover that if I save as .jpg after doing the edits that the
> metadata is preserved. I have been using this as a workaround and it has
> been stable.
>
> I'm going to try other formats and look into filing a report in bugzilla.
>
> Max Bedacht
>
>
>
> On Mon, Jul 26, 2010 at 3:56 AM, Gilles Caulier <caulier.gilles at gmail.com>
> wrote:
>>
>> 2010/7/25 Max Bedacht <bedachtm at gmail.com>:
>> > I am loosing all metadata when I edit an image with the built-in editor
>> > or
>> > Showfoto and do a save-as.
>> >
>> > I have processed the images as follows:
>> >
>> > Convert from .cr2 to .png using the Batch Raw Converter tool (after this
>> > the
>> > metadata is still there);
>> > Geotag (after this the metadata is still there);
>> > Edit using F4 or Showfoto - I have done free-rotate and color adjust,
>> > and
>> > just color adjust)
>> > Save as .png with a new name.
>> >
>> > After the save all the metadata is gone.
>> > I get an error if I try to import the metadata from the original
>> > converted
>> > .png
>> >
>> > I have done the editing sequence using Photoshop Elements 4.0 Editor
>> > (installed with WINE) and with this the metadata is preserved.
>> >
>> > Has anybody run into this?
>>
>> Yes, me too. I processed around 130 RAW photo in editor (ARW to PNG),
>> and sometimes, metadata are lost.
>>
>> It's not reproducible each time.
>>
>> I take a look in source code and PNG writter has the right code to
>> backup metadata with Exiv2.
>>
>> I suspect something like this : i use a tool in editor and metadata
>> are lost at this time, but still displayed in right side bar. You see
>> the lossy action after to save and take a look back in target file.
>>
>> I process my RAW files like this : Raw import tool, ratio crop, free
>> rotation, and sometimes some color correction tools, as
>> B&W. I don't use CM there.
>>
>> As developer, i use all code from trunk, kdegraphics/libs, digiKam and
>> exiv2. kipi-plugins is not used there.
>>
>> Can you confirm this ?
>>
>> Another point : can you reproduce this dysfunction if you save your
>> RAW image in TIFF or JPEG ?
>>
>> It can be interresting to see all debug messages from a console, when
>> you process a raw image.
>>
>> I recommend to open a new file in bugzilla about.
>>
>> Gilles Caulier
>> >
>> > DigiKam 1.2.0
>> > Showfoto 1.2.0
>> > Ubuntu 10.4
>> >
>> >
>> >
>> >
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>> > Digikam-users at kde.org
>> > https://mail.kde.org/mailman/listinfo/digikam-users
>> >
>> >
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>
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