I've just been in touch with Nikon and asked why when you download a movie, you cannot add details in the Meta Data section. I thought I was missing something. This can be done with stills in View NX2 (name, date, subject, address, copyright etc). The answer that came back was this:
"The information you want to add to a movie file is called the IPTC. However, the embedded information of a still image file is not part of a video file and hence, I'm afraid that you cannot edit this section of the software when you have a movie file selected.
Nikon."