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Image-ExifTool
Posted on 2007-04-21 11:43:19-07 by exiftool in response to 4946
Re: -if with DateTimeOriginal
I don't understand the 0000:00:00 case (maybe I'll think about this more when I get a chance), but the 2007:00:00 case should make sense (if done left-to-right as you mentioned):

2007:01:01 is Jan 1, 2007
2007:00:01 is Dec 1, 2006 (1 month before)
2007:00:00 is Nov 30, 2006 (1 day before, November has 30 days)

So 2007:00:00 becomes 2006:11:30

- Phil
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