I think I figured out the Obama footage post by Q.
Lead in was cover. Exit out was missing what?
'Cover' is an editing term (I'm an editor).
Q is saying that the speech we see in the video, is NOT the one given to that room.
The original video has been edited. The real speech has been kept from us.
The speech in the video is NOT what was delivered to that specific crowd / room we see at the beginning of the video.