Metadata are the additional data added to multimedia files. It's an open-source program for reading, modifying, and manipulating images, videos, audios, and PDF metadata. /mnt/drive/folder is the absolute path to the top folder holding all the images to be renamed (your path will be different, of course).You may have come across ExifTool while searching for image recovery software.-r means execute this command recursively for every image file in the top “source” folder (that is, the folder where all the files to be renamed are located), and also for the image files in all the source folder’s subfolders, sub-subfolders, and so on.To rename all image files in the source folder, don’t specify any extensions. -ext jpg -ext mp4 means only rename files with the “jpg” or “mp4” extension.%%le means keep the original file name extension, but make it lower-case if it was originally upper-case, a nice option if the cameras uses “ JPG” instead of “jpg”. The “-” before the “c” isn’t really necessary, but it puts a dash before the copy number. %%-c means that if two images have the same file name up to this point in the naming process, add “ a copy number which is automatically incremented” to give each image a unique name.This ensures a mostly unique filename, the next option will ensure it. %H%M%S means add the hour, minute, and second of the creation time, all represented by two digits.The underscore **_** means put in an underscore after the date part of the file name. %Y%m%d_ means the first part of the new file name should be composed of the four digit creation-date year, followed by the two digit month month and day, both represented by two digits.%Y%m%d_%H%M%S%%-c.%%le, used in conjunction with “ -d” specifies the format to use for the date and time when renaming the file.-d means “ Set format for date/time values”.

‘-filenameExiftool '-filename

Exiftool linux