How to really overwrite ?

[fotoschubser]

Hi!

I have a lot of videos that do not have a CrateDate tag. So I would like to set it by using the following command:

exiftool -r -overwrite_original "-AllDates<FileModifyDate" "-FileCreateDate<FileModifyDate" "-FileModifyDate<FileModifyDate" "\\share\videos"

But this takes ages... even with -overwrite_original a copy of the video is created. This is very time consuming.
Is there a real "overwrite" option which justs writes the meta data to the header of the original file ?

Kind regards
fotoschubser

[Hayo Baan]

But this takes ages... even with -overwrite_original a copy of the video is created. This is very time consuming.
Is there a real "overwrite" option which justs writes the meta data to the header of the original file ?

No, there is no way around this. This is simply the way exiftool was designed to work; it will always rewrite the whole file.