It is that bit in a news article where the person about to be interviewed is seen walking across a room or down a street, etc before giving their story.
What a load of sh*te! Just tell us what they have to say!
I understand they can walk, look at some article in a paper, type/click mouse on a pc. It doesn't add anything.
'OMG Songs of Praise isn't live!' uproar a year or so back springs to mind).
Well it really would be nice to see great uncle bob singing his heart out on the christmas songs of praise knowing he had been dead since august and this was filmed in july.