(Note that you have to "view" the image, to see it, full size.)
See the discussion of "Item date",
Item date does not display seconds.
And note that not all of your files actually have "Item dates" (within them).
(BRU pulls that information from Windows, & seemingly Windows does not see said information from a number of the files.)
If you check the (Windows) Properties of IMG_2714.MOV, does it display your wanted "Item date"?