[digiKam-users] Is changing the date of a photo a destructive process?

[Gilles Caulier]

Hi Marie,

It have been moved to BQM, to chain this tool with more than one
operations. This is the goal of BQM : batch processing over image. Changing
the date is a batch operation.

There is an entry in bugzilla to improve the data change behaviour as the
older tool do with GUI :

https://bugs.kde.org/show_bug.cgi?id=366777

Best

Gilles Caulier

2018-03-07 22:46 GMT+01:00 Marie-Noëlle Augendre <mnaugendre at gmail.com>:

> I liked better the previous process, outside the BQM. It could be used on
> a selection, displayed a preview of the new date before update and - of
> course - acted on the original picture.
>
> I don't understand why it had been incorporated in the BQM, it is much
> less convenient.
>
> Marie-Noëlle
>
> 2018-03-07 18:50 GMT+01:00 Maik Qualmann <metzpinguin at gmail.com>:
>
>> The BQM needs a target file. If there are no image editing tools in the
>> tool
>> list, a copy is made from the source file and no changes are made to the
>> image
>> data. Even overwrite mode to the target file is safe.
>>
>> Maik
>>
>> Am Mittwoch, 7. März 2018, 16:54:30 CET schrieb woenx:
>> > Hi again,
>> >
>> > I have been doing some tests, comparing images before and after the
>> date was
>> > changed in the Batch Queue Manager using an image comparer (
>> > http://www.softpedia.com/get/Multimedia/Graphic/Graphic-Othe
>> rs/Image-Compare
>> > r.shtml
>> > <http://www.softpedia.com/get/Multimedia/Graphic/Graphic-Oth
>> ers/Image-Compa
>> > rer.shtml> )
>> >
>> > The file generated after a date change is identical to the original,
>> not a
>> > single pixel was changed. File size is different due to changes in the
>> > metadata, but that's it.
>> >
>> > As a comparison, I tried to open and save the same JPG picture using
>> > Microsoft Paint, and the image comparer found lots of differences to the
>> > original.
>> >
>> > Therefore, I conclude that changing the date in digikam is a lossless
>> > process.
>> >
>> >
>> > PS: now, if only the date changing process were more intuitive in
>> digikam...
>> >
>> >
>> >
>> >
>> >
>> > --
>> > Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.
>> html
>>
>>
>>
>>
>>
>
>
> --
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