Product Description
Features
19
VENICE S | User Manual | 2906.1345.02 - 02
Rohde & Schwarz GmbH & Co. KG
A closed caption track will only be added to QuickTime files if
valid closed caption data is detected on the first frame of the
provided input or if writing of such a track has been enforced in
the R&S
®
VENICE software (available with software version
3.5), in the R&S
®
Device Manager (available with software
version 4) or via VENICE web service command
configureCodecRequest
.
Furthermore, closed captions are stored in MXF OP-1a files as
defined in the SMPTE 436M standard. The closed captions are
preserved with a head and tail trim. Then they can be played
out to SDI again.
Multiple languages can be inserted into four data channels on
line 21 from separate closed caption files. The first and the
second closed caption track will be placed into field 1 of the
video frame. If more tracks
will be necessary closed caption
information also can be written in a separate *.scc file. For this
additional scc 3 files have to be enabled in the video settings of
the R&S
®
Device Manager. Field 2 of a video frame then
transfer closed caption tracks three and four.
For playout purposes external *.scc files can be inserted to the
SDI signal.
Subtitles
VENICE S allows pass through of embedded subtitles, insertion
from subtitle files and SD/HD up and down conversion.
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 to the SDI signal.
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 couldn‘t be lost with the following for-
mats: MOV, MXF (OP1a Generic, RDD09, Sony XD-
Cam DV, XAVC) and MPEG-2.
