Introduction to the Basic Encoder
Page 1-12
Reference Guide: EN8000 MPEG-4 Part 10 (H.264/AVC) Encoders
ST.RE.E10233.1
The Encoder has the ability to extract VBI data from line number ranges 10-22 and 272-285
for 525 lines and 6-23 and 318-335 for 625 lines. The specifications surrounding VBI data are
covered in great detail in the Application Note ST.AN.1097 - VBI in TANDBERG Television
Systems.
Table 1.4: Supported VBI Data Formats
Data Format
MPEG-4 AVC over TS
Closed Caption and V-chip
Included within SEI Message within the video ES.
Wide Screen Signaling
Contained within the GOP sequence header, inserted when this value changes
Neilson AMOL 1, Neilson AMOL 11 Included as a separate PID.
Different Teletext systems including
System B (WST)
Included as a separate PID.
Teletext Extraction
Line filters can be invoked to selectively disable any individual lines in this range. The filters
are provided to allow the user to ensure that non-Teletext lines (e.g. ITS lines) are not
erroneously extracted. The extracted Teletext lines are formatted into PES packets according
to the DVB specification. The Teletext PES packets are time stamped to allow correct
alignment of subtitling captions with decoded video.
The following Teletext services are extractable:
•
System B (WST) Teletext
•
Video Programming Teletext (VPT)
•
Programme Delivery Control (PDC)
•
Inverted Teletext
1.6 Guided
Tour
1.6.1 Enclosure
The enclosure is 1U height and can be freestanding or mounted in a 19-inch rack. All inputs
and outputs are via rear panel connectors.
1.6.2 Front
Panel
Description
The Encoder provides navigation keys to access and input data. There are two LED
indicators, located on the left of the front panel (see Figure 1.2).
The front panel display and navigation keys are used as a local control method to set up and
configure the Encoder (see Chapter 4, Operating the Equipment Locally). They can also be
used as a quick method for accessing the status of the equipment.
Table 1.5: Front Panel Indicators
Indicator Colour Description
Alarm
Red
This LED is lit when the Encoder has detected an alarm condition.
Power
Green
This LED is lit when the Encoder is receiving power.
