Crystal Vision
AFD, WSS and VI
8.3 Widescreen Signalling
Output widescreen signalling can be set to automatically follow the input AFD data or be
manually selected. If WSS data should be present on the input video this can either be
passed to the output unchanged or substituted for a user selected code. WSS data can also
be set to be blanked. It is only possible to insert WSS information into a PAL output.
Outgoing WSS codes
Explanation
Conversion
0001
Full format 4:3
Centre cut
1000
Box 14:9 centre
Letterbox
1101
Box 16:9 centre
Letterbox
1110
Full format 16:9
Anamorphic
8.4 Video Indexing
SMPTE RP186 describes Video Index information coding for 525 and 625-line television
systems. Video indexing, although not commonly used today, is still in use by some major
broadcasters.
Video indexing can also be inserted into the output video for use by downstream equipment.
Output video indexing is enabled by selecting the required output aspect ratio. Although in
most applications the output selection will mirror the conversion setting the output video index
control remains independent from the conversion setting, so that a user specified aspect ratio
can have assigned the most appropriate ratio information. It is also possible to either insert
blank video index data or pass the input data to the output unchanged.
The 4-bit AFD codes are identical to those for SMPTE 2016.
UP-DOWN-VF User Manual R1.1
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23 June 2017