P: Edit Capture Time issue - Need a way to set all photos selected to same date & time

Hi OlivierA. You are now talking about adjusting the time for videos, and this thread was started to talk about adjusting the time for photos. There are different bugs and limitations for these two cases, and I only (perhaps) understand the issues for photos. Your comment above that I responded to mentions "photos"--if you meant "videos" please ignore anything I said because it is likely to not apply. Wish I could help.

Hello Alan, 
Let's take an example : I am selecting 6 vicdeos in my catalog. All of them have a capture date of "17/02/2013" (Which was an error from lightroom when importing).
In the dialog box "Adjust to a specific date and time" I select "set specific time and date" option, than I specify the following date : "22/01/2017 11:0:00" and apply to the selection.
Result : the first 4 pictures capture date are now "22/01/2017 11:14:50" (good date, wrong time !) and the last 2 pictures have "24/01/2017 09:13:01" so a "random" offset...

Hello, Thanks for your reply. Here are details. Let's take example of video file IMG_1984.MOV. file was imported by LR from an iPhone to the LR catalog and copied on folder P:/photos/iphone on my laptop Hard drive.

In windows : "Modified = 14/04/2017" (which is the capture date) "Created = 15/04/2017" (which is the date the file was copied on the laptop hard drive)
in Lightroom : "Capture date = 15/10/2013"

Now, I notice the following : in the same catalog and same folder there is a picture with the following filename : IMG_1984.JPG  and this picture cature date is... 15/10/2013.  So it sounds like, when importing the video, LR took the capture date if the Image with same filename. It is a strange behavior from LR. If LR does not consider extensions, than it should have been identified as a duplicate when importing.... 

"Videos capture time are not correct in LR while they are correct in the windows explorer."

LR has numerous problems with video metadata, and there are existing topics in this forum for them.  If you describe in detail the symptoms you're seeing, including the date/time you see in LR and the date you see in Explorer, we can point you to the right topic.

Regarding Metadata > Edit Capture Time, see this reply earlier in this topic: https://feedback.photoshop.com/photoshop_family/topics/edit_capture_time_issue_need_a_way_to_set_all...

LR recently updgraded to 6.10 created issues when importing videos : Videos capture time are not correct in LR while they are correct in the windows explorer.
I tried to use "Metada -> Modify capture time" option, but experience an issue : 
When I select several videos, it modifies correctly only the two first vdeos of the selection. The other videos capture dates are also modified but to "random dates" (!)

I have made a separate post (which I hope is not merged into this thread), which explains how I set the capture time of batches of photos.

Are you sure that they are random? The discussion above notes that they are set as offsets from the current date. This confused me too.

I am experiencing similar issue in LR 6.10 when applying "Adjust to a specific data and time" to a selection of photo. Only the frist 2 or 3 of the selection are modified tothe correct date, than the other ones are modified to "random dates".
Very poor behavior for a very basic fucntion.

Thanks, John