EXIF Partial Dates

[Archive]

[Originally posted by dschless on 2010-02-15 05:47:54.634783-08]

When a file's EXIF Date/Time Original contains a partial date, e.g. 2009:01 - year and month but no day, there is an inconsistency when extracting the date field:

exiftool -DateTimeOriginal file.jpg

Date/Time Original              : 2005:01:   00:00:00

exiftool -exif:DateTimeOriginal -d "y=%Y m=%m d=%d" file.jpg

Date/Time Original              : y=2004 m=12 d=31

I understand why it is happening, but the formatted date has the wrong value.  Also if %d is returning the last day of the previous month instead of blank or nothing, is there any way to list files that are missing the day value using an -IF EXPR?

Thanks,

Dan Schless

[Archive]

[Originally posted by exiftool on 2010-02-15 08:51:34.833446-08]

Hi Dan,

You could try -if "$datetimeoriginal =~ /: /" to find dates
with a missing value.  Also, it is possible that the StrictDate
option may help avoid invalid values as it adds a bit more
checking on the date/time format.  This option may only
be enabled via the config file.

 - Phil

[Archive]

[Originally posted by dschless on 2010-02-15 10:10:36.512425-08]

Phil,

Thanks for the suggestion.  After playing around, it seems that this might be a better, more generic solution

Code:

exiftool -exif:DateTimeOriginal -if "not $datetimeoriginal =~ /\d{4}:\d{2}:\d{2} \d{2}:\d{2}:\d{2}/" *.jpg

Dan Schless