AFD Status Fix

Program Segment	TMC000017A
AFD	HD 4x3
AFDStart	2019-04-30 08:35:42.0
AFDFinish	2019-04-30 08:35:42.0
MXFAvailable	2019-05-20 18:10:09.0

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: