In documentaries, when there is a need to disguise a peron's face (or an offensive slogan, etc) the offending part is often pixellated or blurred, or disguised in some such way.
How can I achieve this in VMS? I'm guessing some kind of mask is required, but I can't figure out how to do it. No doubt is is so simple... when you know how!
Many thanks,
Worley