CutStory does exactly what its name says it does.
“Just import a long video, and CutStory will cut it up and save it in your smartphone’s camera roll as fragments of 15 seconds or any other length” in order to create a seamless Instagram story.
Since I am a novice when it comes to maximizing the impact of my own social media presence, Rachel used this app for my wedding video story.
CutStory is free… For now. Although, I assume it will stay that way and be powered by in-app purchases, such as sticker add-on’s.