Congratulations on this APP. But I have some points to mention that I don't like or are missing.
It lacks logical utility that a user would do in real life when it comes to video marketing. Below I comment on some points. Which I consider logical in an APP like this.

1. Videos created cannot be shortened when there is an unwanted end or beginning of several seconds in the video. Because I have seen videos where I would have to make those arrangements and their APP does not allow me to do so. Could you add the possibility of shortening the videos?

2. B-Roll cannot upload images or videos of my product. It is an unprofessional limitation, since many times we want to show our product when we talk about our product.