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#21
The "exiftool" Application / Should be given a notice when ...
Last post by ww408 - February 10, 2025, 08:27:45 PM
When I download an important image I like to at least tag it with the page URL from which it came (and if anyone has an idea on how images saved from a browser could be automatically tagged as such, let me know). After tagging an image just now, I said to myself, a person like this might have added metadata to her image, and sure enough, it was filled with redundant metadata, including the tag that I wrote. So, that made me realize that I should have been alerted to the fact that I had just erased metadata. When writing to a tag that isn't empty, one could receive a notice, like, "xmp-dc:source data replaced". And there could also be more involved options that one can configure: (1) A prompt to overwrite the metadata, (2) A prompt to append/prepend the new data to the existing metadata.
#22
The "exiftool" Application / Re: MIE 1.1 Meta Information E...
Last post by ww408 - February 10, 2025, 06:17:39 PM
No, it's the image.

exiftool a.mie -exif:artist=test -trailersignature=1

exiftool "-trailer<=a.mie" <img>


I just tried the second command on a GIF and a PNG and it failed, and I tried it on another JPG and it made it .2 KB bigger...
#23
Newbies / Re: Matching Windows Explorer ...
Last post by StarGeek - February 10, 2025, 05:14:09 PM
Quote from: Ad_Astra on February 10, 2025, 03:44:50 PMmy code to update XMP file for NEF files fails to add either tag to the XMP file. it is using the same arg file and the other tags in the arg file are updated which puzzles me.
...
Wondering if XMP files support EXIF tags?

XMP files only support XMP data.
#24
The "exiftool" Application / Re: MIE 1.1 Meta Information E...
Last post by StarGeek - February 10, 2025, 05:08:42 PM
Quote from: ww408 on February 10, 2025, 03:18:19 PMJust tried it on a jpg and the resulting file has a smaller file size than the original.

Yes, because all it is nothing but the metadata. There is no image data in an MIE file.

There are a few people here who use it mostly use it to back up the metadata in their files. To be honest, I'm not sure what other uses there are for it.

When I say it's "great", it's the fact that you don't need to do any "translation" between groups. What I mean by that is that you can save your EXIF, IPTC, and XMP metadata into a MIE sidecar file, and you don't have to figure out what tags you would have to copy between. For example, the property of "Description" can be held in three tags. In EXIF, you would save the description to EXIF:ImageDescription. In IPTC, it would be IPTC:Caption-Abstract. And XMP would be XMP:Description. If you had a file that didn't have any XMP data, just the EXIF and IPTC description tags, to save this data to an XMP sidecar which a program such as Lightroom would read, you would have to "translate" the data from the EXIF/IPTC locations into the XMP location, because an XMP sidecar can only have XMP data.

All that said, the MIE file has an extremely narrow scope. It can only be used with exiftool (or a program that uses exiftool).
#25
Newbies / Re: Matching Windows Explorer ...
Last post by Ad_Astra - February 10, 2025, 03:44:50 PM
-EXIF:XPComment=Copyright myname still fails to update the Comment field on my Windows 10 but -EXIF:UserComment=Copyright myname did.

I can only update these two tags in JPEG files, my code to update XMP file for NEF files fails to add either tag to the XMP file. it is using the same arg file and the other tags in the arg file are updated which puzzles me.

exifCmd -P -q -overwrite_original -srcfile %d%f.xmp -ext nef . -@ CopyrightReplace.args
Looks OK to me as the other tags are added, are these two tags compatible with XMP files?

-EXIF:XPSubject=photo by myname
-EXIF:UserComment=Copyright myname

Wondering if XMP files support EXIF tags?




#26
Newbies / Re: Can you rename a raw file ...
Last post by Ad_Astra - February 10, 2025, 03:28:30 PM
Thanks Phil, would %-nc be sufficient to create NAME-1.EXT and NAME-2.EXT?
#27
Newbies / Re: Matching Windows Explorer ...
Last post by StarGeek - February 10, 2025, 03:28:26 PM
XPComment still works here on min Win10 system. You can also try EXIF:UserComment and XMP:UserComment.

See the Windows Metadata thread. I don't have Win11, so I can't test any updates for that, but I hear PNG files have better support.
#28
Newbies / Matching Windows Explorer meta...
Last post by Ad_Astra - February 10, 2025, 03:22:45 PM
Hi

I am interested in adding the metadata tags to display in Windows Explorer for the subject and comments fields.

I found useful discussion on the forum back in the days of Windows 7. I created an args file with the following:

-EXIF:XPSubject=photo by myname
-EXIF:XPComment=Copyright myname

and ran against some JPEG files. The Subject field is updated but the comments field is not. Does anybody have a suggestion as to the correct tag to update for the Windows Explorer to display in the comments field?
#29
The "exiftool" Application / Re: MIE 1.1 Meta Information E...
Last post by ww408 - February 10, 2025, 03:18:19 PM
Just tried it on a jpg and the resulting file has a smaller file size than the original.
#30
The "exiftool" Application / Re: dashcam GPS latitude/longi...
Last post by Phil Harvey - February 10, 2025, 01:18:40 PM
To clear something up about the change in scaling factor for values starting with 0x44 and 0x45 from 1/16384 to 1/8192...  Since it is a standard IEEE float, the next-most significant bit (ie. bit 23, which you didn't report) would have also had to change from a 1 to a 0 to see this scale change.

Looking back at this thread, there seems to have been much wasted time and brain power over this issue.  The GPS encoding could have been determined 5 years ago if you had sent me a sample back then.

BTW, 13.19 is now available.

- Phil