AFD Status Fix

Program Segment	CHOYP220003S
AFD	HD 16x9
AFDStart	2022-05-11 14:09:53.0
AFDFinish	2022-05-11 14:09:53.0
MXFAvailable	2022-05-11 16:16:40.0

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 postage-stamp, change to: