The videos will take the Prezis and add narration, to build another level of detail on the content of the Prezis and to reinforce the key points presented in the infographics.  Video narration also provides a way to present a clear, concise and hence memorable story.  The creation of the narration is itself a test of the clarity of thought and the logic of the organisation of ideas.

Why not try making your own videos?  It is really easy with Jing (free but time limited), Snagit (50 USD) or Camtasia (299 USD), depending on the level of sophistication you need and the depth of your pockets.  When you play back your videos you will find that your ideas are not quite as well organised as you thought.  When you think you have got your story straight, try showing your videos to your colleagues and invite comments.