The Ants has a better wrap up inducing the reader to find out in the book. Both videos are good, but I can see great improvement in your second one. You must have a frame which identifies you as author of the video and a frame which provides credit to the book and author. Please add these two frames. It is a quick edit.Thanks.
I really like "The Ants Go Marching". You had a different approach than many other videos. I liked the narration. If you have time you can check out my movie trailers for books.Awesome job!