dateTimeOriginal is missing Time

[LisainIL]

I have some .jpgs that have a dateTimeOriginal but the time is missing.  It looks like this:
DSC05177.JPG has date 2016:12:25 20:00:42
DSC05180.JPG has date 2016:12:25 20:01:22
DSC05189.JPG has date 2016:12:25
DSC05190.JPG has date 2016:12:25
DSC05192.JPG has date 2016:12:25
DSC05193.JPG has date 2016:12:25
IMG_4459.JPG has date 2016:12:25 14:45:31
IMG_4463.JPG has date 2016:12:25 14:46:34

I'd like to search for these and update the time, but I can't use  -if "not $datetimeoriginal" - it doesn't work because the field is filled in.

Any ideas on how to search for .jpgs that are missing the time?

Thanks!
Lisa

[StarGeek]

Try this (on mobile so I it may need some tweaks)
-if "not $DateTimeOriginal=~/\d{4}:\d\d:\d\d \d\d:\d\d:\d\d/"

[LisainIL]

Thanks for responding.  That didn't work, though.  I'm trying to decipher what might be wrong about it, but I need to research what you're doing there...

[LisainIL]

Actually hold on, I ran that on the wrong directory!  I'll try it again and report back!  SORRY!!

[LisainIL]

YAY!  It looks like it worked.  Thank you!  The expression didn't look wrong to me so I was really stumped at why it didn't work the first time!  I forgot I had changed the directory I was in and that directory had no incorrect dateTimeOriginal stamps!

[StarGeek]

Happy to have helped.

[LisainIL]

Thank you so much... maybe you can help me with the next step....
Now that I can search for all the files that are missing the time.  How can I update JUST the time?

In other words, assume I have a folder filled with .jpgs that all have different DateTimeOriginal but are all missing the time.  I want to leave the date part of the DateTimeOriginal in tact, but I just want to update the time to "something", 14:00:00 for instance.  Is there an easy way to do this? Something like:
"-DateTimeOriginal<DateTimeOriginal 14:00:00" (which didn't work).

[StarGeek]

Very, very close. Try
"-DateTimeOriginal<$DateTimeOriginal 14:00:00"

[LisainIL]

That worked!  Thank you! 
Next question:
I have a directory named 2018, within that multiple directories naming based on the date and some description like:
2018.01.03 Snow Storm

I want to recurse the 2018 directory looking for any file named "img_1597 amb.jpg" in any directory (also using the -if from earlier in the post) and print some info.  (Then I'll use the same thing to change the info.  But first I want to just *view* it to make sure the command is not hitting the wrong files.)  So I tried this:

exiftool -p "$dateTimeOriginal $filepath" -q -f  -if "not $DateTimeOriginal=~/\d{4}:\d\d:\d\d \d\d:\d\d:\d\d/" -r "img_1597 amb.jpg"

That didn't work.

[StarGeek]

Unfortunately, I'm stuck using Mobile, so it's hard for me to respond, but take a look at this previous answer.

https://exiftool.org/forum/index.php/topic,8096.msg41445.html#msg41445

[LisainIL]

No worries, it's not urgent by any means. 
I did look at that thread and I had started down that path at one point... using another "-if ".  I probably was just doing it wrong.  I'll give it another go.
Thanks!

[Phil Harvey]

You can test the $filename in the -if statement, but that won't be very efficient since ExifTool will extract metadata from all files.  It would be better to use something like the Mac/Unix "find" utility to find the file, then pass that name to ExifTool.

You can't use the -fast3 as in the other thread if you want to extract actual metadata from the file.

- Phil