How To Write Script For Animated Movie . As well analysing animated short. This may look something like this: D'source Story and Script Layout Design for Animation Part I D from www.dsource.in Keys to write an animated video script: There are three main keys that can be kept in mind when writing a script for animated video: Screenplay format is relatively simple, but it’s one of those things that can seem a bit daunting until you’ve actually learned how to do it.