Msg#: 4544789 posted 10:08 pm on Feb 12, 2013 (gmt 0)
In my experience, video content - or still images or audio for that matter - does not register as a duplicate to text content. I'm doing something that is parallel to what you describe and have had nothing but good results.
Msg#: 4544789 posted 10:57 pm on Feb 12, 2013 (gmt 0)
So long as the text content still exists on your pages, I don't see how embedding a video version of the same content would hurt. If anything the I would expect the rich content to help, especially from a user perspective. Should reduce over all bounce rates and increase time on site.