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"Metadata R Us"
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2025-07-02: ExifTool 13.32 is now available
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#1
The "exiftool" Application / Re: Is there a way to select t...
Last post by wywh - Today at 03:04:11 PMI have used this workflow. Edit example.config file, if needed.
#2
Other Discussion / Re: Newbie's Plea for Help
Last post by Treat - Today at 03:01:53 PMThank you for your follow up.
It would appear that there is currently a connection in the names of the image file and the JSON file.
I am attaching a .jpg file which was part of my data download from Flickr.
Also included in the download was the JSON file photo_53347553061 which contained the following code:
{
"id": "53347553061",
"name": "The Wawa Goose (15 May 2022)",
"description": "We made the compulsory stop at the Wawa goose. Carlos found that the grass at the far end offer a nice, quiet place to pee.",
"count_views": "0",
"count_faves": "0",
"count_comments": "0",
"date_taken": "2022-05-15 11:59:18",
"count_tags": "0",
"count_notes": "0",
"rotation": 0,
"date_imported": "2023-11-21 14:47:45",
"photopage": "https://www.flickr.com/photos/juniperrock/53347553061/",
"original": "https://live.staticflickr.com/65535/53347553061_a51c34dbc2_o.jpg",
"license": "All Rights Reserved",
"geo": [
],
"groups": [
],
"albums": [
],
"tags": [
],
"people": [
],
"notes": [
],
"privacy": "friend & family",
"comment_permissions": "any flickr member",
"tagging_permissions": "people you follow",
"safety": "safe",
"comments": [
]
}
It would appear that there is currently a connection in the names of the image file and the JSON file.
I am attaching a .jpg file which was part of my data download from Flickr.
Also included in the download was the JSON file photo_53347553061 which contained the following code:
{
"id": "53347553061",
"name": "The Wawa Goose (15 May 2022)",
"description": "We made the compulsory stop at the Wawa goose. Carlos found that the grass at the far end offer a nice, quiet place to pee.",
"count_views": "0",
"count_faves": "0",
"count_comments": "0",
"date_taken": "2022-05-15 11:59:18",
"count_tags": "0",
"count_notes": "0",
"rotation": 0,
"date_imported": "2023-11-21 14:47:45",
"photopage": "https://www.flickr.com/photos/juniperrock/53347553061/",
"original": "https://live.staticflickr.com/65535/53347553061_a51c34dbc2_o.jpg",
"license": "All Rights Reserved",
"geo": [
],
"groups": [
],
"albums": [
],
"tags": [
],
"people": [
],
"notes": [
],
"privacy": "friend & family",
"comment_permissions": "any flickr member",
"tagging_permissions": "people you follow",
"safety": "safe",
"comments": [
]
}
#3
The "exiftool" Application / Is there a way to select the h...
Last post by brandony - Today at 02:55:14 PMHey all, I'm trying to use exiftool to select the highest quality (resolution) preview for a bunch of images. However, these preview types don't seem to be standardized, so I'm trying to figure out if theres a command that selects the best one, or if there's way to sort them by resolution so I can just choose the top one. For example, currently when I run exiftool -j -preview:all myimage.NEF, I get
but I don't know which one is the highest resolution without downloading all of them, which I don't want to do since I need to do this for a ton of files. Does anyone have any ideas?
I appreciate the help.
Code Select
exiftool -j -preview:all myimage.NEF
[{
"SourceFile": "myimage.NEF",
"JpgFromRaw": "(Binary data 1232426 bytes, use -b option to extract)",
"OtherImage": "(Binary data 601734 bytes, use -b option to extract)",
"PreviewImage": "(Binary data 109671 bytes, use -b option to extract)",
"ThumbnailImage": "(Binary data 8336 bytes, use -b option to extract)",
"PreviewTIFF": "(Binary data 98514 bytes, use -b option to extract)",
"ThumbnailTIFF": "(Binary data 210 bytes, use -b option to extract)"
}] but I don't know which one is the highest resolution without downloading all of them, which I don't want to do since I need to do this for a ton of files. Does anyone have any ideas?
I appreciate the help.
#4
The "exiftool" Application / Re: Concatenating several exif...
Last post by Kloomnik - Today at 12:24:39 PMMany thanks, Phil!
And for a final request (I hope): My caption is becoming very long... Is there a way to insert a newline? I searched the documentation without success.
And for a final request (I hope): My caption is becoming very long... Is there a way to insert a newline? I searched the documentation without success.
#5
Metadata / Re: Need a favor from a Exifto...
Last post by StarGeek - Today at 10:02:43 AMAlternatively, you could use the Basename tag.
exiftool "-iptc-caption<${Basename;s/^(\d+-)//}" DIR
What these commands are doing is stripping away any leading numbers followed by a dash from the filename. Hopefully, that is what you want done.
exiftool "-iptc-caption<${Basename;s/^(\d+-)//}" DIR
What these commands are doing is stripping away any leading numbers followed by a dash from the filename. Hopefully, that is what you want done.
#6
The "exiftool" Application / Re: Add thumbnail and preview ...
Last post by Phil Harvey - Today at 09:09:23 AMThe extracted ThumbnailImage and PreviewImage .dat files are not complete HIF files. They contain only a proprietary header plus the raw hvcC image data.
- Phil
- Phil
#7
The "exiftool" Application / Re: Add thumbnail and preview ...
Last post by Hans Kraus - Today at 05:42:54 AM@StarGeek: thanks, the correct link is: https://jottacloud.com/s/1169adcc51758064d6f9d81adc709cbef13
In the subdir 'pv1' are the two output files of
The output of
I know that "It didn't work" is very vague. But I tried it with the GUI of Win 11, therefore I don't have any commands to show. And from the outputs only screenshots.
The output form "IrfanView" is: "Can't read file header! Unknown Image Format, empty/damaged file or file doesn't exist!" (translation by me).
The HIF file is only readable with Adobe Lightroom Classic. I tried IrfanView, CaptureOne, Photoshop too. And Adobe Lightroom Classic is the only tool which shows a correct preview of "20250302_144047.170__R5m2-8486.CR3". Only a pale and pink preview of the file "20250302_144047.170_CR5m2-8486.HIF" is shown by Adobe Lightroom Classic.
Kind regards, Hans
In the subdir 'pv1' are the two output files of
Code Select
exiftool -a -b -W pv1/%f_%t%-c.%s -preview:all 20250302_144047.170__R5m2-8486.CR3. The command is copied from the thread "https://exiftool.org/forum/index.php?topic=7227.0", ExifToolVersion: 13.32.The output of
Code Select
exiftool -a -G1 -s 20250302_144047.170__R5m2-8486.CR3 >20250302_144047.170__R5m2-8486.CR3.txt is of course in the .txt file. The same for Code Select
exiftool -a -G1 -s 20250302_144047.170_CR5m2-8486.HIF >20250302_144047.170_CR5m2-8486.HIF.txt. It is a guess by me that the format of the preview files is the same as that of the 'HIF' file.I know that "It didn't work" is very vague. But I tried it with the GUI of Win 11, therefore I don't have any commands to show. And from the outputs only screenshots.
The output form "IrfanView" is: "Can't read file header! Unknown Image Format, empty/damaged file or file doesn't exist!" (translation by me).
The HIF file is only readable with Adobe Lightroom Classic. I tried IrfanView, CaptureOne, Photoshop too. And Adobe Lightroom Classic is the only tool which shows a correct preview of "20250302_144047.170__R5m2-8486.CR3". Only a pale and pink preview of the file "20250302_144047.170_CR5m2-8486.HIF" is shown by Adobe Lightroom Classic.
Kind regards, Hans
#8
Metadata / Re: Need a favor from a Exifto...
Last post by Phil Harvey - July 07, 2025, 07:53:16 PMHi Chris,
You want the file descriptor written to the IPTC Caption-Abstract? The first time I read your post I thought you wanted the descriptor to be set from Caption-Abstract, and I wrote out a whole response then figured you probably meant the other way around. So here goes again...
The command would be something like this:
exiftool "-iptc-caption<${filename;s/^(\d+-)//;s/\..*//}" DIR
The quoting is for Windows. But I wouldn't be surprised if you are talking about some tag other than IPTC:Caption-abstract because the old IPTC/NAA is becoming obsolete. Use exiftool -s on a file that already contains a caption to determine which tag you should be using.
- Phil
You want the file descriptor written to the IPTC Caption-Abstract? The first time I read your post I thought you wanted the descriptor to be set from Caption-Abstract, and I wrote out a whole response then figured you probably meant the other way around. So here goes again...
The command would be something like this:
exiftool "-iptc-caption<${filename;s/^(\d+-)//;s/\..*//}" DIR
The quoting is for Windows. But I wouldn't be surprised if you are talking about some tag other than IPTC:Caption-abstract because the old IPTC/NAA is becoming obsolete. Use exiftool -s on a file that already contains a caption to determine which tag you should be using.
- Phil
#9
The "exiftool" Application / Re: Concatenating several exif...
Last post by Phil Harvey - July 07, 2025, 07:36:41 PMHere is the command to do what you asked. There is added complexity to handle the case where Caption-Abstract doesn't exist, and to insert commas before the added keywords only if it does:
exiftool '-caption-abstract<${caption-abstract;s/(.)$/$1, /}${keywords;my @a=split /##/;$_="$a[2], $a[3]"}' -sep ## -m FILE
The quoting is for Unix/Mac.
The -m option causes $Caption-Abstract to return an empty string in the case it doesn't exist in the file, rather than returning an undefined value which would mean the command wouldn't do anything.
The -sep ## is to change the list separator to "##" in case any of the Keywords contains a ", " combination. If this is not an issue, then the command may be simplified:
exiftool '-caption-abstract<${caption-abstract;s/(.)$/$1, /}${keywords;my @a=split /, /;$_="$a[2], $a[3]"}' -m FILE
- Phil
exiftool '-caption-abstract<${caption-abstract;s/(.)$/$1, /}${keywords;my @a=split /##/;$_="$a[2], $a[3]"}' -sep ## -m FILE
The quoting is for Unix/Mac.
The -m option causes $Caption-Abstract to return an empty string in the case it doesn't exist in the file, rather than returning an undefined value which would mean the command wouldn't do anything.
The -sep ## is to change the list separator to "##" in case any of the Keywords contains a ", " combination. If this is not an issue, then the command may be simplified:
exiftool '-caption-abstract<${caption-abstract;s/(.)$/$1, /}${keywords;my @a=split /, /;$_="$a[2], $a[3]"}' -m FILE
- Phil
#10
The "exiftool" Application / Re: Concatenating several exif...
Last post by Kloomnik - July 07, 2025, 06:25:14 PMWow! Thanks for the quick and expert reply. I am aware of the different metadata groups, but I use EXIF to refer to all tags (as the name EXIFtool suggests :-).
Your example of concatenation was great help!
Assigning values to the metadata fields that will be picked up by Mac Photos is a challenge of "reverse engineering" of sorts. First, I concluded the Photos caption comes from IPTC:Caption-Abstract, but after the concatenation I had to write it to IPT0:ImageDescription...
Now I have another challenge :-)
I have a metadata field [IPTC]:Keywords with 8 keywords separated by commas. Is it possible to extract only the 3 and 4 keywords and append them to the caption?
I am an old Unix hack and can manipulate Unix tools such as sed, cut, awk and so on when needed.
Again, thanks of your help.
Your example of concatenation was great help!
Assigning values to the metadata fields that will be picked up by Mac Photos is a challenge of "reverse engineering" of sorts. First, I concluded the Photos caption comes from IPTC:Caption-Abstract, but after the concatenation I had to write it to IPT0:ImageDescription...
Now I have another challenge :-)
I have a metadata field [IPTC]:Keywords with 8 keywords separated by commas. Is it possible to extract only the 3 and 4 keywords and append them to the caption?
I am an old Unix hack and can manipulate Unix tools such as sed, cut, awk and so on when needed.
Again, thanks of your help.