Hi, pals!

I have an issue, over here!
Some time ago, I bought a video book, but it cames in vbk files, and only can be played with VitalSource bookshelf player. Totally sux!
This files contains some PDF´s and, of course, mp4 vídeos. PDF´s doesn´t matter to me ... I want video files!
Here are the links:

Inside this one, there is a PDF file and a mp4 file. My question is: it´s possible to extract them?

Here are other links:

http://online.vitalsource.com/books/9788530953164/epubcfi/6/12%5B%3Bvnd.vst.idref%3Dca...l%5D!/4/6/2%5BTribut_Cap_15_Bl_01.mp4%5D/2%400:529 [Note that mp4 file]

I really want the video files and I know that could use some other program that grabs the vídeo from the screen, but there are soooo many files! It´s a lot of work and not productive. There is any way to download this?

Thanks a lot!!!!