Operating the Equipment Locally — Setup Menu: Video Menu
Page 4-54
Reference Guide: Voyager E5784 and E5788 HD DSNG Encoder
ST.RE.E10137.3
VBI on PID Option
This option allows the transmission of VBI data on its own PID to be turned
On or Off.
VBI PID Option
This option defines the PID to be used for VBI data.
VBI Component Tag Option
This option sets the component tag for the VBI stream. The valid range is
0 to 255.
VBI In Picture Option (SD Only)
NOTES…
1. The
VBI in Picture option is only accessible if the selected video profile/level is 422P@ML
8
.
2.
VBI in Picture transmits the VBI waveform as part of the picture and as such will be subject to
some distortion. Most analogue VBI types are robust against this type of distortion but others,
e.g. video index and ITS, are intended for SDI transmission and will not survive MPEG
coding/decoding in VBI in Picture mode.
This enables the extended picture format available in the MPEG 4:2:2
specification to be selected. When selected, the Encoder compresses and
transmits the VBI data as part of the active picture. This mode requires up
to 3 Mbit/s of bit-rate, depending on the amount and complexity of the VBI
present. It may be necessary to increase the video bit-rate accordingly to
maintain picture quality.
NOTE…
When encoding VBI in this way 3:2 Pulldown should be switched off. If it is not, then occasionally
fields may not be encoded because of the inverse pulldown process. This results in some VBI lines not
being transmitted.
When this option is not selected (or when 4:2:0 format video is used), VBI
data must be transmitted in its original digital form either in an
independent data stream (in the case of Teletext) or in user data fields
within the MPEG video transport stream.
Table 4.45: VBI in Picture Options
Selected Option
Description
On
VBI is coded as active video.
Off
Off (Bit-rate too low)
Insufficient bit-rate.
VPS (Line 16) Option (SD Only)
This enables or disables the extraction of VPS (Video Programming
System) data from line 16 of the video input.
8
4:2:2 is only available when software option M2/ESO2/422 is purchased.
Содержание Voyager E5784
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