Exiftool
Snippets for everyday photo/video metadata editing

As per Exitool unix instructions:

$ wget https://exiftool.org/Image-ExifTool-12.25.tar.gz

$ tar xvf Image-ExifTool-12.25.tar.gz

$ cd Image-ExifTool-12.21

$ perl Makefile.PL

$ make test

$ mv exiftool lib/ ~/bin/

Note: If above is not done after version upgrade, a warning is displayed:

~$ exiftool -ver
12.25 [Warning: Library version is 12.21]

Finally, make sure that ~/.profile has:

if [ -d "$HOME/bin" ] ; then
     PATH="$HOME/bin:$PATH"
fi

Then logout and ssh back in for ~/.profile changes to take effect. Exiftool is installed:

$ type exiftool
exiftool is /home/users/pyyhttu/bin/exiftool

$ sudo aptitude install libimage-exiftool-perl

To achieve with minimal amount of work a tagged and organized file structure.

1. Move photos to one Upload directory. Doesn't matter if photos are scattered around in subdirectories in it.
2. Update with Exiftool FileModifyDate using CreateDate that has it.

Those that don't, are reported with Warning: No writable tags set, and can be left behind for the second run:
$ exiftool -m -r '-FileModifyDate<CreateDate' -overwrite_original Upload/:

$ exiftool -m -r '-FileModifyDate<CreateDate' -overwrite_original Upload/
  10 directories scanned
  19 image files updated

1. Rename with Exiftool every photo based on their CreateDate tag:
   $ exiftool -m -r -ext jpg -ext jpeg -ext png -ext bmp -ext eps -ext nef -ext heic '-filename<${createdate}_$filename' -d 'Photo_%Y-%m-%d' Upload/ && exiftool -m -r -ext mov -ext mp4 -ext wmv -ext avi -ext wmv '-filename<${createdate}_$filename' -d 'Video_%Y-%m-%d' Upload/

$ exiftool -m -r -ext jpg -ext jpeg -ext png -ext bmp -ext eps
'-filename<${createdate}_$filename' -d 'Photo_%Y-%m-%d' Upload/ && exiftool -m -r -ext mov -ext mp4 -ext wmv -ext avi -ext wmv
'-filename<${createdate}_$filename' -d 'Video_%Y-%m-%d' Upload/
   10 directories scanned
   19 image files updated
   10 directories scanned
    0 image files read

1. Move with Exiftool every photo to their respective year and month directories:
   $ exiftool -m -r '-Directory<CreateDate' -d %Y/%m Upload/

$ exiftool -m -r '-Directory<CreateDate' -d %Y/%m Upload/
Error: '2022/06/Photo_2022-06-05_DSC_0001.JPG' already exists - Upload/2021/02/Photo_2022-06-05_DSC_0001.JPG
   10 directories scanned
    2 directories created
   18 image files updated
    1 files weren't updated due to errors

Note: If the command does not move images, it is an indication there are duplicates in the destination, and exiftool refuses to overwrite them.

1. For second pass, run update in Upload directory for those that weren't updated with CreateDate but use DateTimeOriginal:
   $ exiftool -m -r '-FileModifyDate<DateTimeOriginal' -overwrite_original Upload/
2. Rename based on DateTimeOriginal:
   $ exiftool -m -r -ext jpg -ext jpeg -ext png -ext bmp -ext eps -ext nef -ext heic '-filename<${createdate}_$filename' -d 'Photo_%Y-%m-%d' Upload/ && exiftool -m -r -ext mov -ext mp4 -ext wmv -ext avi -ext wmv '-filename<${createdate}_$filename' -d 'Video_%Y-%m-%d' Upload/
3. Move based on DateTimeOriginal
   $ exiftool -m -r '-Directory<DateTimeOriginal' -d %Y/%m Upload/
4. If no hits (xxx image files unchanged), then run third run and create CreateDate from FileModifyDate:
   $ exiftool -m -r '-CreateDate<FileModifyDate' -overwrite_original Upload/ && exiftool -m -r '-FileModifyDate<CreateDate' -overwrite_original Upload/
5. Rerun steps 3. (Rename) and 4 (Move).
6. Finally, while working in __groupfolders/2/Photos/, merge all year 2000 directories to their correct place

$ cp -r --interactive --preserve=all 20* ~/siilo/sites/pyyhttu-siilo.kapsi.fi/www/nextcloud/data/Heidi/files/Photos/