Use "Kıps" for the create photo from the videos you captured. You catched the moments only as video? It's okay. This is the what "Kıps" do best. Just select the video and see your photos frame by frame. Save every photo that you liked to your album.
I especially like ui/ux stuff in this app. Very simple to use and app speed's so good enough. Also i have not seen any another alternative app, that can do this.