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Timestamp in Photos

Dave Braine

Dave Braine

macrumors 601
Original poster
Mar 19, 2008
4,002
359
Warrington, UK
I have a Panasonic FZ82(although I'm not entirely sure that is relevant) with which I take a mixture of photographs(JPEGs) and video(MP4).

Photos is set to show these in order oldest first. I noticed that the order between photographs and mp4s was jumbled up: eg 101(jpeg), 102(jpeg), 108(mp4), 109(mp4), 103(jpeg).

Upon investigation within Photos, it transpires that the timestamp on the mp4 clips has had an hour added, so what shows on the camera as 11:30 becomes 12:30 in Photos.

Has anyone else come across this?
 
To clarify. When viewing the timestamp of a video clip when still on the camera, it is correct, eg: 9:30. After importing that clip into Photos on my MBA, 1 hour has been added to the time, eg: 10:30.

This doe not happen to photos, ie: jpegs.
 
My guess is there's something wrong with the metadata as stored by the camera for videos. Do you have an original image and video you could post here or send me? I'm happy to look at the metadata to see if we can figure out the issue. If we can determine the cause, I have a tool I've created that can bulk-adjust the date/time/timezone in Photos to fix it (osxphotos timewarp).

Alternatively, export originals of a photo and video and use exiftool to output the metadata which you can then post here:

Code: 
exiftool -G filename.JPG
 
Photos itself can adjust time stamps very easily. Just select whatever photos/videos you want and then go to Image > Adjust Date & Time. It lets you adjust them relatively, so you can just subract one hour from the timestamp of each photo/video.

Note, it's easier to find just the stuff you just imported in the "Imports" folder in the sidebar.
 
ignatius345 said:
Photos itself can adjust time stamps very easily. Just select whatever photos/videos you want and then go to Image > Adjust Date & Time. It lets you adjust them relatively, so you can just subract one hour from the timestamp of each photo/video.

Note, it's easier to find just the stuff you just imported in the "Imports" folder in the sidebar.
Click to expand...
Prior to Monterey you could bulk adjust date/time but not time zone and I think the OP's issue is likely timezone. (hence the reason I created a tool for this). According to OP's bio he's on macOS 11. If he's on 12, 13, 14, then yes, you're right: select the images then Image > Adjust date/time and you can bulk adjust the timezone. However, when you adjust the timezone in Photos, it also changes the time which may not be what you actually want (e.g. the camera time was correct for the local timezone but the timezone was wrong). `osphotos timewarp` has an option to deal with this.

> M1 MBA, 11.7.3
 
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It's seems that it's something to do with Photos. If I drag a video out of Photos to Finder, and then put it in the online exif site below, it displays the correct timestamp.
www.metadata2go.com

Check files for metadata info

This online metadata viewer will show you all hidden metadata info of audio, video, document, ebook & image files. Online exif data viewer without installation!
www.metadata2go.com www.metadata2go.com
 
This may seem off-the-wall, but what's the timezone setting on your Mac, vs. what's in the media itself?

Maybe Photos is trying to present the media's data-time in the local timezone, and it's somehow botching that calculation.
 
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