I don't know where video might be off the top of my head, and I'm at work so I can't search for video (not that they won't let me, but I am busy at the moment...)
But remember that there are more types of IC's being made than just microprocessors, so there are a lot more companies who might have the type of video you are looking for online.
TI, Micron, IBM, National Semiconductor, TSMC, UMC are just a few companies who probably have their own semiconductor fabs (and might have made videos to show them off) that I can think of off the top of my head, and there are tons more.