Grass Valley K2 Media Client User Manual v3.3 - Manual (Page 269)

June 5, 2009 K2 Media Client User Manual 269
VBI/Ancillary/data track specifications
Supported conversions from HD to SD using AFD
VBI/Ancillary/data track specifications
This section contains the following topics:
• “Definitions”
• “Data track support on K2 Summit Production Client HD channels”
• “Subtitling system support”
• “Data compatibility between K2 Summit Production Client and PVS models”
a
The SMPTE standard describes two valid AFD codes. The K2 system uses the
second value.
Source
AFD and aspect ratio Source image Conversion
performed Converted
AFD and
aspect ratio Converted
image
AFD = 1010
a
AR = 16:9
a
The SMPTE standard describes two valid AFD codes. The K2 system uses the sec-
ond value.
Scale down
letterbox AFD = 1010
AR = 4:3
AFD = 1001
AR = 16:9 Scale down
crop horizontal AFD = 1001
AR = 4:3
AFD = 1010
a
AR = 16:9
Scale down AFD = 1010
a
AR = 16:9
AFD = 1011
AR = 16:9 Scale down
Crop horizontal
letterbox AFD = 1011
AR = 4:3
AFD = 1111
AR = 16:9 Scale down crop
horizontal AFD = 1001
AR = 4:3