The secret of a good movie is in the editing. Well, the script, the lightning, the directing, the photography, and the acting are all important, but for home movies, you have little control over those.
So it’s down to the edit. And the most basic of edits is to lop the ends off a clip, to trim video and make it shorter. Watching excessively long clips is the equivalent of a conversation with someone who can’t ever get to the point. “Let me tell you about that time I fell out of the plane. It was a Tuesday. No, I think it was Wednesday. Wait, it must have been a Tuesday because …”
It’s painful. So, do yourself a favor and trim your video clips. Even if you’re not planning on combining your edits into a short movie, you should at least remove the cruft from anything you’re going to show. The good news is that it’s dead easy to trim video on Mac and iOS.