I have run exiftool on quite big folder with the following parameters:
exiftool -progress --ext pdf -api QuickTimeUTC '-CreateDate<DateTimeOriginal' '-FileModifyDate<DateTimeOriginal' '-filename<CreateDate' '-filename<DateTimeOriginal' -d target/pictures/%Y/%m/%d/%Y-%m-%d_%H:%M:%S%%+c.%%e -r source -overwrite_original
...
...
20357 directories scanned
3 directories created
7 image files updated
107881 image files unchanged
213 files weren't updated due to errors
How do I know which are those files in each category (with errors, unchanged, updated etc) ?
For the errors, there should have been a message on the command line.
The -progress option (https://exiftool.org/exiftool_pod.html#progress-:-TITLE) will give you info as exiftool processes the files. Ones with no changes will return a Nothing changed in message.
There's also the -efile option (https://exiftool.org/exiftool_pod.html#efile-NUM-ERRFILE). Add -efile3 errors.txt and exiftool will write the names of files that gave errors or were unchanged.
I have thousands of files processed and monitoring all of the messages live would be difficult.
Thanks for the -efile3 errors.txt tip - will use it from now on.