AFD Status Fix

Program Segment	MF000013S
AFD	SD 4x2
AFDStart	2020-04-19 07:54:59.0
AFDFinish	2020-04-19 07:54:59.0
MXFAvailable	2020-04-19 08:01:52.0

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: