[Originally posted by canebuono on 2008-06-11 20:59:27-07]Date/Time Shift Feature
Hello. I have to subtract 1 day and 49 minutes from EXIF of a group of pictures.
I read "Date/Time Shift Feature" paragraph, and I also read
http://search.cpan.org/dist/Image-ExifTool/lib/Image/ExifTool/Shift.plbut I couldn't find a well-formulated example which could let me understand how to shift date/time.
I read:
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For example, say that your camera clock was reset to 2000:01:01 00:00:00 when you put in a new battery at 2005:11:03 10:48:00. Then all of the pictures you took subsequently have timestamps that are wrong by 5 years, 10 months, 2 days, 10 hours and 48 minutes. To fix this, put all of the images in the same directory ("DIR") and run exiftool:
exiftool "-DateTimeOriginal+=5:10:2 10:48:0" DIR
****
After reading this, I put all pics in c:\
, I put "exiftool.exe" in c:\
too, and from the DOS prompt on c:\
I wrote
exiftool "-DateTimeOriginal-=0:0:1 0:49:0" c:\
Was it right?
What should I have written?
I ask this because it had no success: EXIF remained the same...
Thanks
[Originally posted by exiftool on 2008-06-16 11:41:23-07]I'm sorry, I thought I responded to this question a long time ago,
but I probably forgot to hit the "Submit" button.
Your command line looks OK, so there must be some other
problem. Were there any errors or warnings? If not, then
perhaps your file just didn't contain the DateTimeOriginal
tag. Did exiftool say that it changed the file? If it did, then
maybe you are looking at another date/time tag. Try shifting
all the common date/time tags with -AllDates-= ...
Also it might help to read
FAQ
number 3.
- Phil