Use -globalTimeShift to change tags and file attributes

[tux23]

Hi,

I found the

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-globalTimeShift parameter in the documentation. Unfortunately, it only lists the shifted dates, but doesn't change the tags and the file attributes (e.g. created at, modified at...), when I ran the example from the docs:

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exiftool -globalTimeShift -1 -time:all test.jpg

I have a lot of photos from my last holiday, where I forgot to switch the timezones. So now, all photos and videos are +6 hours and some are +9 hours. Is the

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-globalTimeShift parameter the right way to change the Exif Tags and the file attributes?

Thank you very much!

[Phil Harvey]

No.  The -globalTimeShift option is needed only when you want to copy a shifted date/time value to another tag.

To simply shift the common EXIF date/time tags, plus the system date/time tags back by 1 hour, do this:

exiftool -alldates-=1 -filemodifydate-=1 -filecreatedate-=1 FILE

(Note that writing FileCreateDate is only supported in Windows.)

- Phil

[tux23]

Ah great, thank you!