AFD Status Fix

Program Segment	CHOY014012B
AFD	SD 4x2
AFDStart	2018-08-20 19:31:07.0
AFDFinish	2018-08-20 19:31:07.0
MXFAvailable	2018-08-21 15:36:00.0

Unknown means assumed SD-MXF 4x2

SD-MXF 4x3 means SD full-screen, HD pillar-box

SD-MXF 4x2 means SD letter-box, HD full-screen

HD-MXF 16x9 means SD letter-box, HD full-screen

HD-MXF 4x3 means SD full-screen, HD pillar-box

How to recongize and fix an AFD error.

Change to: If the picture is cropped top and bottom, change to: