Paging IP Nerds

I know it's not one of the bar exam topics, but I have an IP question that someone might be able to answer. In short, Friend T asked me about this situation and it struck me as an interesting legal question worth exploring, so here it is.

Friend T recently held an engagement party at some Armenian banquet hall (if you're Armenian, you know the routine: lots of food and envelopes stuffed with cash as gifts...yes, it's a bit like the wedding scene from Goodfellas, but we're not all named Paulie). She hired a certain videographer to forever memorialize the event. Said videographer also freelances as an ad producer. Much to her shock, videos of her celebration are now being used for ads for a different banquet hall. She has no K or other agreement with the videographer. Who owns the copyright in the video? Is there fair use defense?

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For those studying for the Bar, late-June and July are the best times to seek out distractions. Please nominate how you are taking your mind off "Gooooooood ideaaaaaaaaaaaaa????"

UPDATE: First off, big thanks for the quick responses. Now, this story in today's LAT cracks me up. Smoking's such an addiction, that the very banquet halls I mentioned in the original post are almost always filled with cigarette smoke and riddled with ash trays for the convenience of the smokers. On the one hand, no proprietor wants to confront drunks who are addicted to cigarettes or lose their property when someone puts the cigarette down on table cloth. On the other hand, you're violating the law. Personally, if I were the Glendale F.D. or the LAFD, I'd make it a "habit" of crashing Armenian weddings to enforce the smoking ban. In 3 weeks, you'll have a budget surplus from all the fines.