I find most of the Zend and CodeIgniter tutorials (from google results) useful even if they are not in video format. If you really want to learn about the 2 frameworks, I suggest you start by taking a look at their websites (
Zend[
^],
Code Igniter[
^]). Install the framework, read the getting started tutorials, and do the exercises. Also, Code Igniter is not a part of Zend, they are 2 different frameworks.