Recent posts

#51

The "exiftool" Application / Re: Add thumbnail and preview ...

Last post by blue-j - July 03, 2025, 01:56:40 PM

hey hans, can you share a sample? - J

#52

The "exiftool" Application / Add thumbnail and preview imag...

Last post by Hans Kraus - July 03, 2025, 12:05:36 PM

Hi,
I have a lot of CR3 files without embedded thumbnail and preview images. I tried:

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exiftool "-thumbnailimage<=thumb8486.jpg" "-previewimage<=preview8486.jpg" 8486.CR3but got:
    0 image files updated
    1 image files unchanged
Are these commands not available/valid for CR3 files?
Regards, Hans

#53

Newbies / Re: custom tag

Last post by Phil Harvey - July 03, 2025, 06:34:31 AM

If you check the XMP, the property name is "APP".  ExifTool will normalize the case to "App" when reading unless you also use the config file when reading back the tag.

- Phil

#54

Bug Reports / Feature Requests / Re: Bug with -fileNUM option

Last post by ywzc - July 03, 2025, 04:53:10 AM

Version 13.32 works as expected. Great, thank you.

#55

Newbies / custom tag

Last post by ofelia - July 03, 2025, 01:49:02 AM

I created a custom tag named "APP",  but after writen the tag into a picture, the tag automaticaly became "App", what should I do if I want the tag to keep what it was, following is my config file：

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%Image::ExifTool::UserDefined = (
    'Image::ExifTool::XMP::Main' => {
        CUSTOM => {
            SubDirectory => {
                TagTable => 'Image::ExifTool::UserDefined::CUSTOM',
            },
        },
    },
);
%Image::ExifTool::UserDefined::CUSTOM = (
    GROUPS => { 0 => 'XMP', 1 => 'XMP-CUSTOM', 2 => 'Other' },
    NAMESPACE => { 'CUSTOM' => 'http://yourdomain.com/xmp/custom/1.0/' },
    WRITABLE => 'string',
    APP => {
      Name => 'APP',
      Writable => 'string'
    },
);

#56

Metadata / Re: Remove Photoshop Ancestors...

Last post by StarGeek - July 03, 2025, 12:05:40 AM

But I can't help with the Xinet-specific details.

To be fair, you already did help. The reason I asked for a sample was because I suspected that there was probably more tags than in your original config. I was planning on updating that config file.

#57

Metadata / Re: Remove Photoshop Ancestors...

Last post by Phil Harvey - July 02, 2025, 08:34:15 PM

There are no Perl files in the example you linked.  However, there are shell scripts, and you could run exiftool commands from them (using the command-line interface -- no need to use the Perl API).

But I can't help with the Xinet-specific details.

- Phil

#58

Bug Reports / Feature Requests / Re: Bug with -fileNUM option

Last post by Phil Harvey - July 02, 2025, 08:20:57 PM

Great, thanks for this report, and for the detailed description to allow this bug to be reproduced.

This will be fixed in version 13.32.

- Phil

#59

Bug Reports / Feature Requests / Re: Adding QuickTime:Rotation ...

Last post by Phil Harvey - July 02, 2025, 08:16:07 PM

Asking wouldn't help, even if they answered (which they wouldn't).  I know what to do already.  The problem is the work involved in doing it.

- Phil

#60

Bug Reports / Feature Requests / Re: Adding QuickTime:Rotation ...

Last post by golemus - July 02, 2025, 01:50:44 PM

ExifTool can edit QuickTime:Rotation if it exists, but can't yet create it if it doesn't.

The reason is because of the overly-complex format of HEIC, and the associated difficulty adding this feature.  But I'll add this to my to-do list, and maybe I'll find some time to look into it.

- Phil

Maybe you could ask insights/help from MS Photos team @ Microsoft or related team @ Apple? As they have already done it. Or is their policy to ignore open source developers? I really don't know how these things work. Anyway reinventing the whole wheel feels a bit pointless. IMO its not like NTFS where MS made (AFAIK) open source community to reverse-engineer the whole thing. Even MS/Apple might benefit from these formats becoming more common as they host a lot of content which consumes a lot of bandwidth.

Anyway is it not kind of 2 flies with one hit problem as both HEIC and AVIF share the same HEIF container format? So that if you solve it for HEIC it is at same time solved for AVIF?