[Digikam-users] Tags not written to XMP sidecar?
Andreas Mair
amair.sob at gmail.com
Mon May 23 06:52:09 BST 2016
Hi Anders,
> Since I don't find the data in the .xmp with niether exiv2 nor exiftool,
it seems like a problem to write.
have you tried to open the xmp file using your favorite text editor? It's a
simple text file (XML based) so you can see if data is written or not.
I've checked the movies I tagged yesterday and the xmp files contain data
(my keywords for example).
I don't know how to extract the data using exiv2 or exiftool.
Maybe your exiv2 or libexiv2 are too old?
Best regards
Andreas
2016-05-22 22:36 GMT+02:00 Anders Kamf <digikam at kamf.se>:
> Hi!
>
> Since I don't find the data in the .xmp with niether exiv2 nor exiftool,
> it seems like a problem to write. The .cmp is created by digikam though, so
> it writes something. But not the tags which it writes to a jpg-file as it
> seems. It can of course also be that those two programs cannot extract that
> specific data, but even if so digikam should be able to.
>
> Regarding reading metadata it is the same for jpg as for xmp, digikam
> doesn't re-read metadata of a file in that is present in its database
> unless manually told to. It won’t automatically recognize that a file is
> updated outside digikam.
> (Also, when triggered to re-read digikam appends the metadata of the file
> to the metadata already in the database, i.e. it is not possible to delete
> a tag outside digikam and expect it to disappear when re-reading the
> metadata. As designed.)
>
>
> BR
> Anders
>
> 2016-05-22 17:34 GMT+02:00 Martin (KDE) <kde at fahrendorf.de>:
>
>> Hallo
>>
>> So is it a problem in writing the xmp file or reading from them on the
>> new location?
>>
>> I have simmilar problems. Digikam writes xmp files quite fine, but never
>> reads from xmp automatically if they are changed by another program
>> (like darktable). I have to sellect the album/file and hit reread
>> metadata from external file to get it working.
>>
>> I hope this will be fixed in upcomming digikam 5.
>>
>> Regards
>> Martin
>>
>>
>> Am 22.05.2016 um 17:01 schrieb Anders Kamf:
>> > Hi,
>> >
>> > Thanks for your reply Tobias! I'm afraid it doesn't solve the problem or
>> > answers the questions though.
>> >
>> > I indeed write meta data to JPG files, including tags, have done so
>> > since 2009 and it works very well. Sidecar files are created by digikam
>> > for files it cannot write meta data into, e.g. video files, the settings
>> > was described in my initial post. It is from those Filename.mp4.xmp or
>> > Filename.mov.xmp I have tried with both exiv2 and exiftool to extract
>> > the tags.
>> >
>> > I'm moving files from my laptop to my server once I have done tagging
>> > etc (laptop is used because I travel a lot). I usually use rsync, i.e.
>> > the move is done outside digikam. The photo collection on my servers is
>> > accessed with "another" digikam from a desktop PC (Windows) and from a
>> > stand alone Ubuntu (both with setting "Read from sidecar files)". Both
>> > have their own digikam database, hence all the meta data needs to travel
>> > with the files.
>> >
>> > The main question, I'd guess, is whether to expect that the meta data of
>> > the xmp file corresponds to the one of the jpg file in terms of tags,
>> > rating etc.?
>> >
>> > Regards
>> > Anders
>> >
>> >
>> > 2016-05-22 15:31 GMT+02:00 Tobias Margiani <margianit at gmail.com
>> > <mailto:margianit at gmail.com>>:
>> >
>> > Hi,
>> >
>> > I'm not sure if I understand your problem correctly. Are XMP files
>> > created but
>> > without (the right) content or are there no XMP files at all (you
>> > could check
>> > that with a file manager)?
>> > I don't use XMP files normally so there might be people who know all
>> > this
>> > better but from a few quick tests it looks like exiftool only reads
>> > xmp files
>> > if you pass them as argument directly and not if you try to read
>> > tags from an
>> > image file (e.g. if you have image.jpg and image.xmp you have to use
>> > "exiftool
>> > image.xmp" to read the tags). In my checks there is a "Tags List"
>> entry
>> > showing the digikam tags.
>> > To comment on you problem when moving the files. If you only moved
>> > image files
>> > the metadata might indeed be lost but if you have moved the whole
>> > folder the
>> > xmp files could still be there! So check with a file manager. That
>> > the tags
>> > aren't read by digikam may result from your configuration. Are you
>> > sure that
>> > you've configured digikam to read metadata from sidecar files.
>> > Another source of this problem may be that you haven't configured
>> > digikam to
>> > write Tags into file at all. You can check in the metadata tab what
>> > information
>> > is written to the files.
>> >
>> > I hope some of this could help.
>> > Regards
>> > Tobias
>> >
>> > Am Samstag, 21. Mai 2016, 10:12:13 CEST schrieb Anders Kamf:
>> > > Hi!
>> > >
>> > > I have the setting "Write to sidecar files": "Write to XMP sidecar
>> > file for
>> > > read-only image only", which creates xmp sidecar files for the
>> > movie files
>> > > that are in my collection.
>> > > Now, I thought that this would mean that the tags applied to those
>> > movies
>> > > was written to the XMP sidecar file. But that seems not to be the
>> > case! I
>> > > now realise that at least neither exiv2 nor exiftool finds those
>> tags.
>> > > Also, when I access the file from "another" digikam on another
>> > computer, no
>> > > metadata seems to be found.
>> > >
>> > > If this is true, it means that all metadata for those files have
>> > been lost
>> > > when I have moved the files outside Digikam (to another server),
>> which
>> > > truly is a sad awakening.
>> > >
>> > > Is this the intended behaviour, or is it a bug? Or am I doing
>> > something
>> > > wrong (a user-fault...)?
>> > >
>> > > I'm using digikam 4.14.10 on Ubuntu 15.10.
>> > >
>> > > Best regards
>> > > Anders
>> >
>> >
>> > _______________________________________________
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>> >
>> >
>> >
>> >
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>>
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