Crystal Vision
AFD, WSS and VI
8 AFD, WSS and VI
UP-DOWN-VF models ATX and ATXS offer AFD insertion of SMPTE 2016 AFD, WSS or
Video Index for use by downstream equipment.
8.1 Introduction
SMPTE 2016 AFD data can be inserted into the output video for use by downstream
equipment – either manually or by automatically following the incoming AFD data. One of 16
AFD codes is embedded in an ANC data packet, which is carried in the vertical blanking.
Widescreen signalling information can be inserted in 625 line SD outputs for use by
downstream equipment. WSS can be inserted manually or be set to automatically follow the
incoming AFD value and the conversion used. If WSS data is present on the input video this
can either be passed to the output unchanged or substituted for a user selectable code. WSS
data can also be set to be blanked. Video index can be inserted into the output video for use
by downstream equipment. The Video index AFD value can be selected manually or
automatically based on the incoming AFD value and the conversion used. Video index data
can be set to be blanked or pass the input data to the output unchanged
8.2 AFD
There are three sets of controls associated with Active Format Descriptor (AFD). These are:
the inserter mode control, entire image aspect ratio selector (coded frame) and the group of
16 AFD codes. These controls are repeated for both SD and HD.
The HD output will have the ANC data packets containing the AFD information inserted within
the active line portion on the appropriate line.
The 16 available codes defined in SMPTE 2016 are described in the following table:
AFD
code
Description
AFD
code
Description
0
Undefined
8
Full Frame (as coded frame)
1
Reserved
9
4:3 Centre
2
16:9 Centre
10
16:9 Centre
3
14:9 Centre
11
14:9 Centre
4
16:9+
12
Reserved
5
Reserved
13
4:3 with shoot and protect 14:9
centre
6
Reserved
14
16:9 with shoot and protect 14:9
centre
7
Reserved
15
16:9 with shoot and protect 4:3
centre
Note
: When inserting SMPTE 2016 data the inserter will blank any incoming SMPTE 2016
data.
UP-DOWN-VF User Manual R1.1
56
23 June 2017