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Posted on Mon Feb 18 12:35:54 2008
by loloeroket
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| Append value to existing tag |
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Hello,
I am trying to use template files to adjust iptc tags:
exiftool -@ template.args file.jpg
where template.args looks like this:
# template.args
-IPTC:CopyrightNotice=Text
-IPTC:By-line=Text
-IPTC:Credit=Text
-IPTC:Caption-Abstract=$caption-abstract Text
# end
I end up with Caption field looking like that:
$caption-abstract Text.
Is there a way to do this or do I have to use command line?
Thanks,
Laurent
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Posted on Mon Feb 18 12:51:05 2008
by loloeroket
in response to 7120
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| Re: Append value to existing tag |
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I realized that my first post is not readable. I am sorry and repost it:
I am trying to use template files to adjust iptc tags:
exiftool -@ template.args file.jpg
where template.args looks like this:
# template.args -IPTC:CopyrightNotice=Text -IPTC:By-line=Text -IPTC:Credit=Text -IPTC:Caption-Abstract=$caption-abstract Text # end
I end up with Caption field looking like that: $caption-abstract Text. Is there a way to do this or do I have to use command line?
Thanks, Laurent
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Posted on Mon Feb 18 15:50:35 2008
by exiftool
in response to 7121
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| Re: Append value to existing tag |
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Hi Laurent,
This will work if you use the proper argument syntax.
For the caption-abstract, you don't want to assign a new
value (with "="). Instead, you want to "redirect"
the value from another tag (with "<"). Of course,
in this case the tag is itself, but the same syntax applies:
-IPTC:Caption-Abstract<$caption-abstract Text
- Phil
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Posted on Tue Feb 19 11:35:37 2008
by loloeroket
in response to 7124
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| Re: Append value to existing tag |
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Hi Phil,
This is wonderful!
Is there by chance the possibility to replace some text by chance? I know I am pushing my luck.
Also if I want to compile several fields in one, I do like this?
-IPTC:Caption-Abstract<$caption-abstract Text $CreatedDate $City, $Country
I saw in the manual how to format the date.
And a last one for the road. Is there a way to make a carriage return?
Thanks,
Laurent
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Posted on Tue Feb 19 15:41:55 2008
by exiftool
in response to 7132
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| Re: Append value to existing tag |
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Hi Larent,
You can reformat the text any way you want by creating a user-defined
Composite tag to do what you want. Search the forum and you will
see some examples of this.
$/ may be used for a newline. You should read the -p
description in the application documentation because I'm sure you'll
have more questions that this may answer.
- Phil
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Posted on Wed Feb 20 08:45:00 2008
by loloeroket
in response to 7134
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| Re: Append value to existing tag |
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Thanks for the reply,
It sounds interesting this user-defined composite tag. I believe it is perl.. I need to dig into it.
Laurent
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Posted on Fri Feb 22 16:51:09 2008
by loloeroket
in response to 7144
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| Re: Append value to existing tag |
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I am coming back with my stupid questions.
I tried the '$/' in the .args but it prints ...'$/'. Also when the field IPTC:caption-abstract doesn't exist in the file there is an error Warning: [minor] Tag 'caption-abstract' not defined - -, I read the manual (If a tag does not exist, the output value is set to '-' if the -f option is used.) but I tried to put -f but without success and my file is corrupted (4K).
I tried the -p option but it doesn't seem to work either in case of .args file. Or simply I don't get the syntax.
Laurent
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Posted on Fri Feb 22 17:24:29 2008
by exiftool
in response to 7164
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| Re: Append value to existing tag |
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> cat t.args
-IPTC:Caption-Abstract<$caption-abstract Text $CreatedDate $City, $Country $/ new line
> exiftool a.jpg -iptc:all
> exiftool a.jpg -@ t.args
Warning: [minor] Tag 'caption-abstract' not defined - a.jpg
0 image files updated
1 image files unchanged
> exiftool a.jpg -@ t.args -f
1 image files updated
> exiftool a.jpg -iptc:all
Caption-Abstract : - Text - -, - . new line
Application Record Version : 4
> exiftool a.jpg -caption-abstract -b
- Text - -, -
new line
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Posted on Fri Feb 22 20:32:38 2008
by loloeroket
in response to 7166
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| Re: Append value to existing tag |
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Then it must come from my piping then.
//Image is first processed in ImageMagick then Piped to exiftool
>convert $file_in -quality 85% -auto-orient - | exiftool -@ template.args -f ->$file_out
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Posted on Fri Feb 22 21:10:15 2008
by exiftool
in response to 7169
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| Re: Append value to existing tag |
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Yes. That is the problem. Currently tags can not be copied
in a pipeline. This is because the copy is effectively a read
followed by a read/write, but a pipe can only be read once.
This is easier to understand when you realize there is an implicit
-tagsFromFile option whenever you copy tags. So
your command is effectively:
... | exiftool -tagsfromfile - ... - > ...
- Phil
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Posted on Fri Feb 22 21:23:17 2008
by exiftool
in response to 7170
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| Re: Append value to existing tag |
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But of course, I should have realized that you don't need to
copy the tags in a pipeline anyway, since you should be able to
read the tags from the original file. What about this?:
convert $file_in -quality 85% -auto-orient - | exiftool -tagsfromfile $file_in -@ template.args -f
+->$file_out
- Phil
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Posted on Fri Feb 22 23:39:23 2008
by loloeroket
in response to 7171
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| Re: Append value to existing tag |
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I am getting the following error:
Error: File not found - +-
convert: Output file write error --- out of disk space? `-'.
Laurent
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Posted on Fri Feb 22 23:47:53 2008
by loloeroket
in response to 7170
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| Re: Append value to existing tag |
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But this is working!!
convert $file_in -quality 85% -auto-orient - | exiftool -tagsfromfile $file_in -@ template.args -f
+ ->$file_out
What to say?? you rock!!
Thanks for this, it makes a killer sequence now. I will try to do the same with a directory now, Actually if the metadatas are the same I can simply take the same file as reference. I think I start to understand how the whole thing is working. And just for fun, I will try in the same pipe sequence to rename and ftp. It must be funny!
Laurent
PS: Now by previewing my message I realize the + sign was added by the forum. What a dummy I am ;-)
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