Hi ,
VBI - is the vertical blanking Interval ( non-active region)
The full video data is transmitted from ADV7282-M.
This is the full video lines 525 lines - ( 480 active lines and 45 blanking lines).
The ADV7282-M does not adjust the video frame. It digitizes the full video signal and outputs it in standard output timing. In the case of the ADV7282-M it convert it from interlaces to progressive and then provides it as a MIPI signal.
Rgds,
Ray