Another great tool, with a little bit of a learning curve though, is exiftool:

I am using it to reorganize a large photo library (which it's awesome for), but 
this page talks about updating tags:

It can be as simple as:

#exiftool "-DateTimeOriginal+=5:10:2 10:48:0" IMG_1234.JPG

To update the DateTimeOriginal tag.

-----Original Message-----
[] On Behalf Of Susan Joslyn
Sent: Tuesday, June 11, 2013 5:14 AM
To: 'Manu Fernandes'; 'U2 Users List'
Subject: Re: [U2] Writing into metadata

Thanks, Manu.  This does look like it would do everything I need - both now and 
future things I hadn't even considered!  It does look like a bit of a learning 
curve, but worth it.

-----Original Message-----
From: Manu Fernandes []
Sent: Tuesday, June 11, 2013 7:47 AM
To:; U2 Users List
Subject: RE: [U2] Writing into metadata


We use ImageMagick ( ; It provides OS command line 
to read / write picture properties ; and many other tools for image 
Check "identify -verbose picturefilename" then parse what you need ; or use 
"escapes" ( to pick elements. 

Free, Available on win / linux


> -----Message d'origine-----
> De : [mailto:u2-users- 
>] De la part de Susan Joslyn Envoyé : mardi
> 11 juin 2013 12:53 À : Objet : [U2] 
> Writing into metadata
> Hi everyone,
> Does any one know how to use a unibasic program to write into the 
> metadata of a .jpg file in windows?  Or to read, rename and write that
> If someone knows how to do it with a windows tool I'm game, but I've 
> looked into some that require me to learn a lot of new skills that I 
> cannot invest in for this particular little project.
> Appreciate any thoughts or ideas.
> Susan
> _______________________________________________
> U2-Users mailing list

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