I can't get my video album to have a highlight unless I put a picture in it 🙁 I have noticed that everybody else does it but I can't figure out how. Please tell me if you know how.
The gallery no longer supports the highlight images for video files. It was an unintentional feature in an earlier version of the gallery software. When Gilby upgraded to a later version of the gallery that feature disappeared. The old trick was to upload a picture with the same name as the video and it would show up as the highlight for the video. That trick no longer works.
You can mark photos as hidden. Then they won't show up in the gallery (unless you're the owner of the gallery and are logged in). Add a photo, mark it as hidden, then mark it as the highlight photo.