Irfanview and jhead will both do what you want. Exiv2īeware that with lowercase -t (or without any -T) Exiv2 will also rename the file to a new name based on the timestamp, which may be very confusing. (Remove the -r if you don't want recursion, and if you do that, you can also give a list of files or a wildcard instead of directoryname.) And be careful with those quotes - if you're running this on Windows, you want " instead of '. Just for completeness, though, I did look at the documentation, and with ExifTool, do this: exiftool -r '-DateTimeOriginal>FileModifyDate' directoryname I can never remember offhand the right options to do anything with those and have to look at the documentation every time, but jhead -ft is easy to remember with the mnemonic "fix time". Other utilities like ExifTool or Exiv2 are much more capable, but at the price of complexity. found, without executing any other command (like jhead): find. You can also use find to just show all the files that would be. In order to perform recursion into subdirectories, you could to combine it with the find command available on Linux/Unix/Mac (or Cygwin for Windows): find. jhead with find, for going through subdirectories Sets a bunch of files so that the file timestamp matches EXIF.
Of these, for this very simple task, jhead is my suggestion.
#Batch edit exif metadata software
This is the inverse of Is there any software which will set the EXIF Dates based on the file's modification date?, and I'm sure all of the programs listed there will apply.
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