Product Description
25
User Manual | 2906.2506.02 - 01
Features
R&S VENICE S
Subtitles
R&S VENICE S allows pass-through of embedded subtitles, insertion from
subtitle files and SD/HD up and down conversion.
R&S VENICE S supports embedded subtitling information in MXF OP1a files
or additional in separate *.stl files. Subtitles can be read and written
according to EBU Tech 3264-E.
For playout purposes, external *.stl files for multiple languages
can be
inserted into the SDI signal.
The subtitles configuration for R&S VENICE is done in the R&S
®
Device
Manager tool. If the respective "Record Subtitle Type" is enabled in the
Subtitle Settings, the system automatically uses subtitles, if available. The
"Subtitle File Path" setting in the "VDCP Settings" section is used to specify
the directory where the system looks for subtitle files.
Currently R&S VENICE S supports Latin and Greek character sets.
Aspect Ratio
There are many technical issues while dealing with SD and HD content. SD
content can be available in 16:9 or 4:3. HD content is always 16:9. A broad-
caster must be able to playout all three types of material and switch seam-
lessly between them all. The aspect ratio can be changed at various points
in the broadcast chain.
To get an optimal picture it is important that the format bring accurate infor-
mation with it. Outside the US, WSS (Wide Screen Signaling) was some-
times used with SD signals to define the aspect ratio. The information was
stored on VBI line 20 for NTSC and line 23 for PAL. Meanwhile AFD has
replaced WSS for both, SD and HD material.
AFD (Active Format Description) describes the video picture in terms of the
aspect ratio and other characteristics of the active image within the coded
frame.
If transcoding one file format into another file format during ingest
as well as transcoding the closed caption information could be lost
with the following format: MXF (OP Atom, Sony XDCam IMX,
AS02, AS11, IMF).
Closed Captions cannot be lost with the following formats: MOV,
MXF (OP1a Generic, RDD09, Sony XDCam DV, XAVC) and
MPEG-2.
For working instructions on how to perform these settings, see sec-
tion "Configuring the Subtitles" on page 92.
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