NEXUS , YouTube as a network

The NEXUS show at the Phoenix is on Flickr but the link is not that clear.

The photos are "all rights reserved" . Would Creative Commons make it clear they can be mashed up? Maybe this is not expected?

I ask this in general though Nexus is an example.

Is it ok to take video? Ask questions? Often not allowed inside a gallery.  Exmouth beach was a good location in my view. Marginal behaviour is ok at the seaside.

maybe there are other video links that relate?