Extract Date from Filename

[jj168]

Hi,

I am trying to extract the date from the filename and update the dates in the meta of jpgs. I don't really care about the time. I'm using MacOS 14.

My filenames are in the form of:

2024-03-01-in.jpg
2024-03-01-out.jpg

I've tried many commands from this forum but haven't found a working solution.

In particular, I've tried these 2 commands:

Code Select Expand

exiftool "-AllDates<filename" 2024-03-01-in.jpg
Warning: Invalid date/time (use YYYY:mm:dd HH:MM:SS[.ss][+/-HH:MM|Z]) in ExifIFD:DateTimeOriginal (PrintConvInv) - 2024-03-01-in.jpg
    0 image files updated
    1 image files unchanged


Code Select Expand

exiftool "-AllDates<${filename;s/in/000000/}" 2024-03-01-in.jpg
zsh: bad substitution

Can you please help?

Thank you very much.

[StarGeek]

On Mac/Linux, using single quotes instead of double quotes.  Double quotes around a $ causes the shell to interpret it as a shell variable instead of an exiftool one.

The three tags that make up the AllDates shortcut require date and time, 14 numbers.  That is also why the first command fails.  You can use a substitution like in your second command as long as the quotes are correct, but as long as there are no other numbers, like a copy number, you can just append the 00 time
exiftool "-AllDates<$filename 00:00:00" /path/to/files/

[jj168]

Thank you! Now it works perfectly

[SybrBlue]

Can you expand JJ?  Which code worked?  I suppose I will try on my own, but can you use this to process an entire directory?

[StarGeek]

Can you expand JJ?  Which code worked?  I suppose I will try on my own, but can you use this to process an entire directory?

Yes.  Where I put /path/to/files/ you can put any number of directory paths and/or individual filenames.  Add the -r (-recurse) option to recurse into subdirectories.