Add Video To Multiple Categories

[kpness]

I know if it were done now, the videos would be two entries in the database. I know it's possible though. Big porn networks do it all the time.

In the video tables in the database, could you make it possibly to input two or more variables in the category? Or maybe add up to 3 categories, say cat1 cat2 cat3 and link add them that way? I'm not very efficient in php script, but I would think it's possible.