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Hi, I hear you when you say you have been doing the same thing for a long time and are experienced, but regarding problem #1, I'll ask this anyway just in case - is there any chance that you renamed the files the first time around? Lightroom won't detect as duplicates files that have different names.
Regarding #2, in Mac Finder or Windows Explorer, are the file creation dates correct? If so, in LR, try going in the menu bar to Metadata>Edit Capture Time and just hitting OK without making any changes - does that correct it? If so, select all your videos from affected imports and do this.
Hi Laura, thanks for looking at my concerns. I really apreciate the time you spend on my issues. Ilooked at your questions and suggestions, here are my updates :
on problem#1 : I did not renamed filenames. In the "process" I am using to import files, I am keeping original filenames from the cameras. I add a look at the filenames and attributes in my computer folders and could not find any modification... Now, I have some file that are "duplicates" that have now a "_2" added to the file name before the extension (ex : IMG2021_2.jpg)
on problem#2 : I confirm that files creation dates in Windows Explorer are correct ! (ex : 14/04/2017 for a video file IMG_1991.MOV while the creation date in Ligthroom is 16/10/2013... so the Windows explorer has the right creation date.
Now, I noticed that I have a picture file with similar name but with jpg extension (ex : IMG_1991.JPG) and this picture was created on 16/10/2013. So it looks like if lightroom is diplaying the creation date of the JPG file ! this is very strange !
Now, I tried your proposed corrective action ( going in the menu bar to Metadata>Edit Capture Time and just hitting OK without making any changes). unfortunately, It did not work. ( I have a "Modify all dates" option instead of an "OK" option, but I guess it should work).
I also tried to manually modify dates on some videos, and it does not work properly. I have a very, very strange behavior ! Lets take an example :
- when I select video IMG_1991.MOV and apply a modification moving creation date manually from "16/10/2013" to "14/04/2017", It does not change the dates on the capture date in lightroom... but... another video is modified !!! : IMG_1003.MOV creation date has been modified !!.
Now, to make it more strange : just after that, I reselect the initial video IMG_1991.MOV and try again to apply the same modification, moving creation date manually from "16/10/2013" to "14/04/2017". The result is that the video IMG_1991.MOV is not modified... but another video file (always the same IMG_1003.MOV creation date has been modified again and the new creation date is now in 2022 ! (... created in the future...).
Note that I have been very carefull in making sure I selected the right video. The "metada-> Edit Capture time" dialog box displays a snapshot of the video, so no error possible.
Hope you'll be able to sort this out....
Thanks for your help
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You're welcome, OlivierAll! I'm afraid that I don't have the expertise to sort this out for you. Since no one else has chimed in, I would recommend posting your issues on a different Adobe forum where there is more of a focus on buggy behavior: Photoshop Lightroom | Photoshop Family Customer Community . Adobe experts participate there regularly.