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NoClue
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Post subject: EXIF Stuff
 Posted: May 29, 2010 - 02:45 PM
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Site Admin
Joined: Jan 17, 2001
Posts: 10454
Location: Blackwood, NJ USA
Status: Offline
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I've got a lot of pictures, and I'm starting to use metadata to help organize (or help search through) them.
I found lots of apps that will let you edit metadata...Reveal, even Gwenview has an editor.
I recently needed a list of filename, caption and creation date for a group of files. So far, the easiest way I've found to do that is to use exiftool, a platform-independent (yes, there's one for Windows too.  )command-line tool.
The command I was looking for was:
exiftool -T -filename -caption-abstract -createdate work_folder > textfile.txt
...where work_folder is the folder that contains all the images that you need the metadata from, and textfile.txt is a tab-delimited output file.
To see a list of all tags in a file, I ran:
exiftool -a -u myphoto.jpg |
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hubtones
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Post subject: RE: EXIF Stuff
Posted: May 30, 2010 - 12:17 AM
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Member
Joined: Feb 28, 2001
Posts: 1035
Location: Philadelphia, PA USA
Status: Offline
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| You must be renaming your pics as you store them. Otherwise exiftool would leave you with a collection of names like img0009.jpg, img0010.jpg ad-nauseam with really only the creation date to guide you. I have yet to find an easy way to do this. |
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NoClue
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Post subject: RE: EXIF Stuff
Posted: May 31, 2010 - 02:52 PM
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Site Admin
Joined: Jan 17, 2001
Posts: 10454
Location: Blackwood, NJ USA
Status: Offline
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I don't bother renaming them. I just create folders based on the date and location (yyyy-mm-dd_place). That's why I'm starting to use metadata to describe them. There's certainly plenty of fields available to you. There's even an embedded thumbnail.
I had a couple of files that had their thumbnails hammered by the GIMP. I used jhead to regenerate the embedded thumbnails:
jhead -rgt filename.jpg
Jhead also has lots of command line options, but it too looks like it'll rename based on date/time, or file date. What would you like a renamer to do?
Jhead was available from one of the repos. |
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NoClue
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Post subject: RE: EXIF Stuff
Posted: Jun 02, 2010 - 03:36 PM
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Site Admin
Joined: Jan 17, 2001
Posts: 10454
Location: Blackwood, NJ USA
Status: Offline
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Speaking of renaming...
I had a handful of photos that had been recovered with recoverjpeg. They were all named 'image#####', in a seemingly random order...IOW, when viewed in Konqueror, one image had nothing to do with the next.
To get them in some sort of order, I renamed them based on the DateTimeOriginal EXIF field:
jhead -n%Y-%m-%d_%H%M%S *.jpg
...which gave me filenames like '2007-12-24_103804.jpg'.
Much better. |
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NoClue
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Post subject: RE: EXIF Stuff
Posted: Jun 08, 2010 - 10:59 PM
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Site Admin
Joined: Jan 17, 2001
Posts: 10454
Location: Blackwood, NJ USA
Status: Offline
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Grr...
I had been using Gwenview's 'Plugins->Images->Metadata->Edit EXIF' to add captions to a bunch of files.
About halfway through, I noticed Gwenview's 'Plugins->Images->Metadata->Edit Captions'. Using 'Edit Captions' will add whatever you type to JFIF Comment, EXIF Comment, XMP Caption and IPTC Caption tags.
Having a handful of protocols like that will probably mean that other apps would be more likely to see the tags.
But...I don't feel like copying/pasting the tags in each individual file. 
Never fear:
exiftool "-caption-abstract>comment" *.jpg
...did the copying for me. It also renamed the original files for me. IOW, myphoto.jpg is now myphoto.jpg_original, and the newly tagged file is myphoto.jpg.
Oh...almost forgot:
exiftool -a -u -g myphoto.jpg
...will show you which group each of the tags are in. |
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