CODEWITHSUNDEEP
file-extensionbatch-renameexiftool
Ved Varun
Ved Varun

Reputation: 1

Automatically renames files with correct file extention in bulk

I have a folder with multiple types of file ( mp4, mp4, jpg, wma .etc) and these files have either have no extension, or all messed up extensions extension such as mp3.mp3, mp3.jpg, or just file name. I was reading that exiftool or even python magic can be used to assign correct file extension on understanding filetype. I am looking for exiftool based solution where these file can be renamed with correct file extension.

eg filename (this is mp3 file) filename1.jpg ( this is again mp3 file, with jpg as file extension) filename.mp3.mp3.mp3 (repetition of extension)

Upvotes: 0

Views: 987

Answers (1)

StarGeek
StarGeek

Reputation: 5781

At the simplest, try this (change double quotes to single quotes if on Mac/Linux):
exiftool -ext "*" "-filename<$filename.$filetype" TargetDir
or
exiftool -ext "*" "-testname<%f.$filetype" TargetDir

That will simply add the extension all the files in TargetDir. To recurse, add -r. If there was already an extension, this will add the proper extension at the end of the false extension e.g. filename.mp3 would become filename.mp3.jpeg.

For a more complex version which strips away some of the previous, false extensions, you could try something like this:
exiftool -ext "*" "-filename<${filename;s/(\.(mp3|mp4|jpe?g|png|wma|mov))*($)//i}%-c.$filetype" TargetDir
which would strip away extensions that are in the center parens in the regex. The %-c will add a number if the resulting rename would be a duplicate e.g. filename.jpeg, filename-1.jpeg, … filename-n.jpeg.

Edit: added -ext option to deal with files without an extension.

Upvotes: 2

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