> I test the full process until exporting on my piwigo gallery... Really
>
> 2014-11-03 23:45 GMT+01:00 GDoirat - GMail <
[hidden email]
> <mailto:
[hidden email]>>:
>
> Hi Elle,
>
> Thanks a lot for your answer.
> Sounds great. I will try this. As I have DNG raw file, i have to
> change to -ext DNG . Hopefully exiftool can read/write DNG !!
> If this is working this will solve my problem.
> My workflow to process my rawfile would be then :
>
> * Import raw files in darktable
> * Rate (star) rawfiles in darktable
> * Developpe rated rawfiles (files not rated aren't good, so i
> don't loose time to developpe them)
> * Export Jpeg
> * Use ExifTool to update embedded JPEG of rawfiles
> * Erase Exported JPEG
> * Open Digikam : he will scan new files and import xmp info
> (number of star) and show me embedded JPEG updated
> * Finish to complete pictures informations in DK (localization,
> face recognition, tags, comments...)
>
> This will avoid me to have duplicated files (RAW + JPEG) which was
> really a pity for me.
>
> I will confirm if this okay in a futur mail, once I could try this
> more precisely.
>
> See you
>
> Gaylord
>
>
> 2014-11-03 11:54 GMT+01:00 Elle Stone
> <
[hidden email]
> <mailto:
[hidden email]>>:
>
> On 11/02/2014 06:04 PM, GDoirat - GMail wrote:
>
> Hello Everybody
>
> I use Digikam to manage my photo database for many years.
> With my first camera, i took my pictures in JPEG...
> Digikam was really
> great.
> I bought a SLR camera and started to took pictures in RAW.
> I prefer to developpe my raw files in another software
> than digikam;
> but i still really like photo database managment of DK.
> But preview of
> raws are not updated when i do changes in the raw file
> (i'm using
> darktable).
> Is there a way (a software included or not in digikam)
> to update
> embedded raws with exported jpeg from darktable in order
> that digikam
> display a raw preview which includes changes done in
> darktable?
> My search on web make me realised that Lightroom seems
> to be abble to
> do that but i didn't succeed in finding a way to to that
> on linux.
>
>
> Hmm, I have also wished that I could overwrite the embedded
> preview jpeg, and also always just assumed that you can't change
> the embedded preview jpeg.
>
> But actually it turns out that you *can* overwrite the embedded
> preview using exiftool. It's a bit round about:
>
> First develop the raw file.
> Then save a copy of the developed raw file as a jpeg.
> Then use exiftool to embed the "new preview" jpeg into the raw
> file, writing right over the top of the orginal embedded jpeg.
>
> See this page:
>
http://u88.n24.queensu.ca/__exiftool/forum/index.php/__topic,2245.0.html?PHPSESSID=__njo90ntbht6qapg9on7i9q4l81> <
http://u88.n24.queensu.ca/exiftool/forum/index.php/topic,2245.0.html?PHPSESSID=njo90ntbht6qapg9on7i9q4l81>
>
> /////// Quoting Phil (exiftool author) from the above link:
> If I understand you correctly, you want to write same-named
> JPEG images as the PreviewImage for a set of CR2 files.
>
> exiftool "-previewImage<=JPGDIR/%f.jpg" -ext cr2 CR2DIR
> /////// end quote
>
> I tested the command and it does work. "JPGDIR" and "CR2DIR"
> need to be replaced with whatever directories the files are in
> (can be the same directory).
>
> It probably wouldn't be too difficult to write a script to
> automate the process. Just make sure you test thoroughly on some
> throwaway images. I managed to mess up a raw file by running the
> command with the wrong syntax.
>
> I believe your new preview image must have the same size (and
> possibly the same orientation) as the original preview, but I
> haven't confirmed.
>
> I don't know which embedded file digiKam shows (there are
> several to choose from), but I will guess it's the previewImage.
>
> Also see reading and writing examples from
>
http://www.sno.phy.queensu.ca/__~phil/exiftool/exiftool_pod.__html> <
http://www.sno.phy.queensu.ca/~phil/exiftool/exiftool_pod.html>
>
> Not every camera raw file has exactly the same set of embedded
> images. For example, my canon raw files don't seem to have the
> "JpgFromRaw" that is referenced in the exiftool reading and
> writing examples.
>
> Elle
>
>
>
>
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>
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