How to change date format from "20230620" to "2023-06-20" ?

[Roland]

Good evening.

I don't find how (if it's even possible) to change date and hour format in file names.

I have files where the date and hour is the file name in the format "yyyymmdd_hhmmss".
For example 20230620_125237.jpg
Is there a way to automatically rename such files like this :
2023-06-20_12-52-37.jpg

Thank you in advance for any hint !

Roland

[hi5]

Select the files, press ctrl-m for the Multi Rename Tool, press F1 to read and study the help

Method 1 "easy" - Enter this in the NAME field

[N1-4]-[N5-6]-[N7-8]_[N10-11]-[N12-13]-[N14-15]

The preview should show the correct file names, press start.

OR

Method 2 "RegEx" - Tick the RegEx box

Enter this in the Search field

(\d{4})(\d{2})(\d{2})_(\d{2})(\d{2})(\d{2})

This in the replace

$1-$2-$3_$4-$5-$6

Preview OK? -> Start

You can save this solution so you can load it again via F2 Load/Save settings

[Roland]

Thanks for the answer !

Meanwhile I found another method that works :

In the rename tool , in the name field (the upper left field, called "Masque p. renom.: nom fichier" in french) I wrote [Y]-[M]-[D]_[h]-[m]-[s] and voilà this did the trick.
Total Commander seems smart enough to understand that my file name contains the date and the hour.

Your method 1 is nice too, method 2 is also interesting but a little too masochistic I think !

Roland

[Hacker]

Roland,
Not really. Those placeholders take the date and time from the files' timestamps.

Roman

[ghisler(Author)]

Indeed [Y]-[M]-[D]_[h]-[m]-[s] is NOT equivalent to the solutions posted by [b]hi5[/b]. Normally they are the same for unchanged photos (e.g. from a smart phone), but the file timestamp can change, e.g. when you resize or rotate and then save the image. Then [Y]-[M]-[D]_[h]-[m]-[s] will change the name to that new date and not the original date.