trying to change original time for canon CR3 file

[cheendwa]

I've tried to follow recommendations in other threads to change the original time to 6 hours earlier (forgot to change time zone setting).

I created a folder c:\tocorrect and created a batch file with the single instruction:

exiftool -DateTimeOriginal-="0:0:0 6:0:0"c:\tocorrect1

Am I missing something?

[StarGeek]

Where is the problem?  Is exiftool returning an error?  Are you checking for change with exiftool or are you using some other program to look at the data?

Canon CR3 files are tricky, as they are based upon the MP4 format instead of the TIFF format like CR2 files. This means that some of the time stamps are saved as UTC. So if you are in a different time zone than where the image was taken, there might be a difference, depending upon the program.

Use this command to look at all the time stamps in the file
exiftool -time:all -G1 -a -s file.cr3