Print Page - xmp, darktable, loop

Title: xmp, darktable, loop
Post by: dtw on February 13, 2019, 01:51:32 AM

Dear all,
may I ask for your valuable advice again?
I am looking for a nice way to rename darktalbe-xmp with information necessarily coming from related nef/dng (and to improve my understanding for exiftool by the way)

The structure is as follows:
%d%f.%e        #nef or dng
%d%f.%e.xmp     # available for every image; darktable, first version
%d%f_01.%e.xmp    # sometimes, if another version is created, eg bw version,
%d%f_02.%e.xmp   # maybe more whatever versions in selected cases, eg 16:9 ratio etc.
...

I thought about a script with a loop:

Code Select


#! /usr/bin/perl

$i=1;
while ($i != 0) {
	$j +=1;
	exiftool -ext nef -ext dng -tagsfromfile @ -d '%Y-%m-%d_%H%M%S' '-filename<${DateTimeOriginal}00_${model;s/\s//g}%+2c.%e.xmp'  '-filename<${DateTimeOriginal}${subsectimeoriginal}_${model;s/\s//g}%+2c.%e.xmp'  -srcfile %d%f_0$j.%e.xmp . ;
	$i=$CountGoodWr;
	}

This loop is not working for other reasons, which I have not sorted out jet. The exiftool command alone works fine aslong as you do not use $j in -srcfile, but instead eg 1 and change that number for every run in my tests...
(so, I can solve my renaming problem by hand, but that is not that nice ...)

My major questions are therefore as follows:

Is it possible to retrieve $CountGoodWr?
Is it possible to use a variable within the filename-definition, like -srcfile %d%f_0$j.%e.xmp ?
Or, in general, is there a smarter way to solve that problem?

Thank you so much,
Dirk

Title: Re: xmp, darktable, loop
Post by: Phil Harvey on February 13, 2019, 07:36:59 AM

Hi Dirk,

I would do it a bit differently, and avoid the looping. I will present the command in argfile (-@) format since the argument list is fairly long:

Code Select

-ext
xmp
-d
%Y-%m-%d_%H%M%S
-tagsfromfile
%d%f
-filename<${DateTimeOriginal}00_${model;s/\s//g}%+2c.%e.xmp
-filename<${DateTimeOriginal}${subsectimeoriginal}_${model;s/\s//g}%+2c.%e.xmp
-tagsfromfile
%d%-.7f%-4f
-filename<${DateTimeOriginal}00_${model;s/\s//g}%+2c.%e.xmp
-filename<${DateTimeOriginal}${subsectimeoriginal}_${model;s/\s//g}%+2c.%e.xmp

- Phil

Edit: Added a missing "%" character in the second -tagsFromFile argument

Title: Re: xmp, darktable, loop
Post by: dtw on February 13, 2019, 05:26:26 PM

OK, one more thing to study :)
Thanks so much!
Dirk

Title: Re: xmp, darktable, loop
Post by: dtw on February 16, 2019, 10:22:49 AM

Hi Phil, dear all,

without the looping, the code will safe a couple of hours when used with a significant number of image files!

In case, someone is interested in that code in the future, here is a little update with two changes:

First, -fileorder preserves the order in the updated image files, that:
oldname_01.DNG.xmp --> newname_01.DNG.xmp.
Second, the %e in -filename now needs to be changed to %-3f, that:
oldname.DNG.xmp --> newname.DNG.xmp

For matters of clarity, here is a simplified example code:

Code Select


-ext
xmp
-fileorder
-d
%Y-%m-%d_%H%M%S
-tagsfromfile
%d%f
-testname<${DateTimeOriginal}00_${model;s/\s//g}%+2c.%-3f.xmp
-tagsfromfile
%d%-.7f%-4f
-testname<${DateTimeOriginal}00_${model;s/\s//g}%+2c.%-3f.xmp

Thanks again!
Best, Dirk

Title: Re: xmp, darktable, loop
Post by: Phil Harvey on February 16, 2019, 01:17:31 PM

Great. Glad you found something that works for you.

- Phil

ExifTool Forum

ExifTool => Newbies => Topic started by: dtw on February 13, 2019, 01:51:32 AM