1s Movies are automatically generated systematically by selecting photos and videos uploaded to FamilyAlbum during the target period based on factors such as visibility settings, who appears in the photo/video, and whether the photo/video has comments.
For normal Album Members, these videos are created using only photos and videos shared with the whole family, so the content may differ from 1s Movies made for Album Admins.
A balanced selection of photos and videos is chosen from the entire target period, based on factors such as visibility settings, how faces/people appear, and whether the photo/video has comments.
1s Movies include short portions of videos.
Please note that even if you delete or set a photo/video to Admins Only, it cannot be removed from a previously created 1s Movie (including those sent to normal Album Members).
Similarly, photos and videos uploaded after a 1s Movie has been created cannot be added to that 1s Movie.