[Shotwell] metadata exporting RAW

[Bruno Girin]

Simon,

With JPEG, Shotwell embeds the meta-data into the file. From a
previous discussion (which is probably in the mailing list archive but
I can't find it), my understanding is that RAW formats other than DNG
are a bit fidly when it comes to embedding meta-data in them and the
risk is to actually damage the file beyond repair. Having said this,
using a XMP side-car file could be a good solution to this. However,
it would require smarter meta-data handling that can handle meta-data
differently depending on file type. It's not necessarily difficult to
do, it just takes careful design :-)

Now, to make matters more interesting still, you could also consider
using the file system's capabilities when the files are stored on a
file system that supports meta-data (such as HFS+ on OS-X) but let's
park that for now.

Cheers,

Bruno

On 29 December 2010 09:58, Simon Spannagel <simonspa at kth.se> wrote:
> Hej guys,
>
> thanks for your Christmas-Release, I really enjoy the new version and its
> advantages. Especially great (I didn'Ät expect that) is the auto-import
> feature if I develop RAW images and export jpegs with another editor/DAM
> than Shotwell - automatically added. Great.
>
> But I'm wondering: after enabling the "write metadata to files" option, I
> get all my tags written into the jpegs - that works great. But what happens
> to tags assigned to RAW files?
> Mostly, those files get a XMP sidecar file and aren't touched at all (only
> read access). Does Shotwell write tags in XMP files? If not, it would be
> great do ad this as a feature - write them that others can access and read
> them as well so that one gets a unified ta handling in the whole photo
> workflow process.
>
> I attached a sample xmp-file used by darktable (http://darktable.sf.net)
> including three different tags: "Stockholm", "Portrait" and "Gamla Stan"
>
> I created a ticket for this too (see http://trac.yorba.org/ticket/3035) but
> I thought maybe this is something for discussion.
>
> best regards,
> Simon
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-- 
Bruno
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