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Image-ExifTool
Posted on 2008-07-18 19:51:26-07 by justin in response to 8359
Re: Problem Setting FileModifyDate

Hi Phil, it looks like you've cracked it! Below, I have tested both setting the -filemodifydate from the -createdate and shifting the -filemodifydate back and forward one hour - all with DST enabled on my machine. As far as I can tell it looks perfect!

D:\Photos\Library\2007\03\25>exiftool -alldates -filemodifydate * ======== 2007-03-25_D50_DSC_4513.NEF Date/Time Original : 2007:03:25 18:35:16 Create Date : 2007:03:25 18:35:16 Modify Date : 2007:03:25 18:35:16 File Modification Date/Time : 2007:03:25 19:35:16 ======== 2007-03-25_D50_DSC_4514.NEF Date/Time Original : 2007:03:25 18:35:37 Create Date : 2007:03:25 18:35:37 Modify Date : 2007:03:25 18:35:37 File Modification Date/Time : 2007:03:25 19:35:37 ======== 2007-03-25_D50_DSC_4515.NEF Date/Time Original : 2007:03:25 18:35:59 Create Date : 2007:03:25 18:35:59 Modify Date : 2007:03:25 18:35:59 File Modification Date/Time : 2007:03:25 19:35:59 3 image files read D:\Photos\Library\2007\03\25>exiftool "-filemodifydate<createdate" * 3 image files updated D:\Photos\Library\2007\03\25>exiftool -alldates -filemodifydate * ======== 2007-03-25_D50_DSC_4513.NEF Date/Time Original : 2007:03:25 18:35:16 Create Date : 2007:03:25 18:35:16 Modify Date : 2007:03:25 18:35:16 File Modification Date/Time : 2007:03:25 18:35:16 ======== 2007-03-25_D50_DSC_4514.NEF Date/Time Original : 2007:03:25 18:35:37 Create Date : 2007:03:25 18:35:37 Modify Date : 2007:03:25 18:35:37 File Modification Date/Time : 2007:03:25 18:35:37 ======== 2007-03-25_D50_DSC_4515.NEF Date/Time Original : 2007:03:25 18:35:59 Create Date : 2007:03:25 18:35:59 Modify Date : 2007:03:25 18:35:59 File Modification Date/Time : 2007:03:25 18:35:59 3 image files read D:\Photos\Library\2007\03\25>exiftool -filemodifydate-=1 * 3 image files updated D:\Photos\Library\2007\03\25>exiftool -alldates -filemodifydate * ======== 2007-03-25_D50_DSC_4513.NEF Date/Time Original : 2007:03:25 18:35:16 Create Date : 2007:03:25 18:35:16 Modify Date : 2007:03:25 18:35:16 File Modification Date/Time : 2007:03:25 17:35:16 ======== 2007-03-25_D50_DSC_4514.NEF Date/Time Original : 2007:03:25 18:35:37 Create Date : 2007:03:25 18:35:37 Modify Date : 2007:03:25 18:35:37 File Modification Date/Time : 2007:03:25 17:35:37 ======== 2007-03-25_D50_DSC_4515.NEF Date/Time Original : 2007:03:25 18:35:59 Create Date : 2007:03:25 18:35:59 Modify Date : 2007:03:25 18:35:59 File Modification Date/Time : 2007:03:25 17:35:59 3 image files read D:\Photos\Library\2007\03\25>exiftool -filemodifydate+=1 * 3 image files updated D:\Photos\Library\2007\03\25>exiftool -alldates -filemodifydate * ======== 2007-03-25_D50_DSC_4513.NEF Date/Time Original : 2007:03:25 18:35:16 Create Date : 2007:03:25 18:35:16 Modify Date : 2007:03:25 18:35:16 File Modification Date/Time : 2007:03:25 18:35:16 ======== 2007-03-25_D50_DSC_4514.NEF Date/Time Original : 2007:03:25 18:35:37 Create Date : 2007:03:25 18:35:37 Modify Date : 2007:03:25 18:35:37 File Modification Date/Time : 2007:03:25 18:35:37 ======== 2007-03-25_D50_DSC_4515.NEF Date/Time Original : 2007:03:25 18:35:59 Create Date : 2007:03:25 18:35:59 Modify Date : 2007:03:25 18:35:59 File Modification Date/Time : 2007:03:25 18:35:59 3 image files read D:\Photos\Library\2007\03\25>

I understand that moving to a new version of Pearl is not to be taken lightly but in this case, it does seem to resolve the problem. Many thanks for all your help. Justin..

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