I have a large database driven section of a site I am building that lists all the videos this section has to offer. There are numerous categories that categorize all these videos, and each video can belong to a number of relevant categories. Thus if a visitor comes to the main video page, they can select a category they are interested in to view it's associative videos. Within the category page, each video has some pictures and about a paragraph description about that video, in which they can click the link to go on to the specific page for that video.

The problem I am worried about with this setup is that having each video belong to multiple categories causes google to see duplicate content across the various categories. While some videos only belong in one category, there are quite a few that belong to 2-3 categories that are relevant to the subject matter it pertains to. Am I at any risk here by having google index all the different categories, but allow each video to belong to numerous of those categories? I would hate to see some sort of penalization for duplicate content, or just as bad, those pages get dumped into the supplemental index.

Any guidance on this matter would be greatly appreciated. Thank you.