Issue with Video Trimming and Chronological Order in Photos App

flying_turtles wrote: …I ultimately just want to save space.

Saving a clip makes two videos, so that way is more space. The clip is smaller than the original, so if you delete the original and replace it with the clip, it will take less storage.

I hope your backups preserve the originals.

Here is a 27 second video:

Here is a 9 second clip from that video:

You can see that the dates are the same.

Are you comparing the same sorts of things? If you export either of these videos, then a File Manager like Mac's Finder or Windows Explorer will show the date the file was created, not the date that the video was created. If you look at these in an Image Manager like Photos, then it will show the created date. What are you looking at?

Honestly, I just quickly made these. You could do the same, yourself, and compare.

flying_turtles wrote: … I understand that "Save Video" preserves the date, but this option overwrites the original video.

Actually, no. The original Photos and videos in Photos are never changed. Photos is a non-destructive editor. Photos remembers the edits you make and applies them when you to see them. If you look a a "saved video" you see that the entire video is there, it just offers a restricted view. A shortened "new clip" is useful if you don't want anyone to see the deleted parts, or the original date.