Ebook with embedded video

I am looking for the right software package to write an ebook with embedded videos. I will be writing repair manuals and then putting them on a customer portal. So after trying to speak to Adobe I have been left with little clear guidance from their various teams. I spent over two hours on the chat system without speaking to anyone with an iota of knowledge or comprehension of what I needed. I emailed ebooks@adobe.com twice and no joy there either, they have not had the decency to reply. I am hoping that someone here can help. Otherwise I will have to go elsewhere. To say I'm disappointed is an understatement.