[KIPAX]

I cant see it being much different from photography. I had to look into this as an amatuer photographer. This is what I got told by a proffesional photograpy company

"The legal side says that if you are on public land and you are only photographing what everyone else can see then it's okay. That's how the paperazzi get away with the photos on beaches of celebrities."

Once its in your camera and legally obtained then you the taker of the photograph own the copyright and can do what you want with it.. including selling it.

If video is different then its different.. but I would be surprised if it is much different.