Workflow requires employee to view videos before completing the workflow step.
Video's have not been added to the workflow module. This will be reviewed on the next service pack.
In order to create workflows that include videos you will need to create a workflow that utilizes the format tools. When creating the workflow step, under the Step Instructions is the hyperlink tool.
This tool will allow you embed a link of your video. Be sure that the video is located online, at a website like youtube. Using this tool will allow you to configure the link to open in a new window, giving you the ability to redirect the employee to the location of the video. Be sure to use the instructions that will need to be taken by the employee before they mark the step complete.