Grass Valley SSP-3801 Installation v.1.2 - Manual (Page 8)

4
Introduction
Carriage of ancillary data in clips
Carriage of ancillary data in clips
The SSP-3801 card can insert vertical ancillary (VANC) data from clips so that data such as
closed captions can be played out in sync with the video. VANC data can be carried in clips
in one of three ways:
• As a SMPTE 436M data track within the MXF
• As VBI lines encoded in the MPEG2 data (SD only - all Sony IMX files carry 16 lines of VBI)
• As user data within the MPEG bit stream (not supported by SSP-3801)
Currently the SSP-3801 only supports handling of VANC data from the SMPTE 436M data
track or from the VBI lines encoded in the MPEG2 picture.
The card operates with an “outside-in” model for handling vertical ancillary data. All SD
clips must be in the Sony IMX format and will therefore insert the first 16 lines of the MPEG
picture into the VBI space on the output. If VBI lines are present in SMPTE 436M, this will
overwrite the entire line on the output and will consequently override the VBI lines in the
MPEG2 picture.
Supported media file formats
The SSP-3801 card supports the following formats. If the media files that you want to use
are not in a supported format, you can use the GV STRATUS Playout File Processing Node to
convert the files and the GV STRATUS Playout Media Import Application to register the
media files as assets in the GV STRATUS Playout service. For more information, see the
“Managing Assets” chapter of the GV STRATUS Playout Operator Guide.
What’s included with your product
Each SSP-3801 package consists of two separate hardware components:
• One HD/SD SSP-3801 card
• One SSP-3801 rear connector panel
Type Extension Description
Off Air slide OXT Oxtel Still format
Still OXT Oxtel Still format
Voice-over WAV 48kHz multi-channel WAV file (8, 16, 24
or 32 bit)
Graphic GMJ Transcoded by the GV STRATUS
Playout File Processing Node
Logo • OXT
• OXA • Oxtel Still format
• Oxtel Animation format
Clip MXF Op1A XDCAM HD or Sony IMX
VANC VANC Created by csvanccreate.exe tool. For
more information, see
VANC Packet
Creation Tool in the SSP-3801 User
Guide.