Rijifi wrote:
exiftool adventure (should I need to use it!), I'll come back for more advice! 😉
A short Terminal and exiftool manual:
Using exiftool via the command line is not so difficult as it sounds. Just download the MacOS Package .pkg from exiftool main page and install it. Depending on the macOS version there might be an alert that the .pkg was not opened but do not worry: exiftool is from a trusted developer who has just not a bought a certificate from Apple. So dismiss the alert with "Done", and open System Settings > Privacy & Security > Security and click Open Anyway and proceed to install.
Then, for example, put copies (just in case when testing this) of the images or movies you want to process on the Desktop to a folder named 'test' (don't put anything else there).
Then open Applications > Utilities > Terminal.app, type 'cd ' (without quotes, notice the space at the end) and drag that 'test' folder to the Terminal window and press Return to change to that folder (or type 'cd ~/Desktop/test' followed by Return. The tilde '~' means your home folder).
Then copy & paste the desired command to the Terminal, press Return, and wait for all files in that folder to be processed. For example check almost all metadata for all files in that folder:
exiftool -a -G1 -s .
The dot '.' at the end of a command means 'this folder'. Or alternatively, omit that dot '.' at the end, and instead type the exact name of the file you want to process. Or type just the start of the filename, and then press Tab to use autocomplete and maybe insert '*' to the end, and hit Return to process all files that start with the same letters. Or add '-ext jpg' switch to the command to process only files that have .jpg suffix. That was a rather clumsy instruction but I guess you get the idea to get you going.
https://exiftool.org/