Despite changing Filecreatedate and FileModifydate its still...

[questionexif]

its still unchanged in sites like http://exif-viewer.com/

I confirm it changed on the system exif viewer. But somehow the sites still sees it as the unchanged date.  What's the issue?

I used the following commands
-fileCreatedate="2018:10:10 10:10:10"
-fileModifydate="2018:10:10 10:10:10"

[StarGeek]

The issue is that you're changing the file system time stamps.  These are not embedded in the file and exist only on the drive where the files reside.  When you upload a file to another computer as you do with that site, those time stamps are lost.

If you want data to travel with the file, you need to use embedded tags such as EXIF tags.  The AllDates shortcut tag will write to the three most common EXIF time stamps

Example:

Code Select Expand

C:\>exiftool -P -overwrite_original -AllDates="2022:05:12 12:00:00" y:\!temp\Test4.jpg
    1 image files updated

C:\>exiftool -G -a -s -AllDates y:\!temp\Test4.jpg
[EXIF]          DateTimeOriginal                : 2022:05:12 12:00:00
[EXIF]          CreateDate                      : 2022:05:12 12:00:00
[EXIF]          ModifyDate                      : 2022:05:12 12:00:00

[questionexif]

The issue is that you're changing the file system time stamps.  These are not embedded in the file and exist only on the drive where the files reside.  When you upload a file to another computer as you do with that site, those time stamps are lost.

If you want data to travel with the file, you need to use embedded tags such as EXIF tags.  The AllDates shortcut tag will write to the three most common EXIF time stamps

Example:

Code Select Expand

C:\>exiftool -P -overwrite_original -AllDates="2022:05:12 12:00:00" y:\!temp\Test4.jpg
    1 image files updated

C:\>exiftool -G -a -s -AllDates y:\!temp\Test4.jpg
[EXIF]          DateTimeOriginal                : 2022:05:12 12:00:00
[EXIF]          CreateDate                      : 2022:05:12 12:00:00
[EXIF]          ModifyDate                      : 2022:05:12 12:00:00

Ah so these tags are useless outside of the computer itself? So how is that site showing today date all the time?

[StarGeek]

No, the EXIF tags I listed are embedded in the file.  The FileCreateDate and FileModifyDate are local to that computer only.  They are part of the file system and exist on every file on the computer. 

If you're on Windows, then when you Right Click->Properties on a file, the file dates show up here


If you continue to the Details tab, then the EXIF dates, specifically DateTimeOriginal shows up here


As to what that site shows, I wouldn't know, but I'd suggest running the command in FAQ #3 to view all the tags in the file.

[questionexif]

That's clear. thank you.