Ericsson SPR1100 Operations Instructions download pdf (Page 183)

Stream Processing and Networking

6.2.5.2 Transport Packet Headers

PIDs used in the transport packet headers are configurable and have valid continuity

counter values inserted.

6.2.5.3 Packetized Video Elementary Streams

The compressed video data is packetized within MPEG-2 PES packets which are

configurable

to be per picture or per GOP.

6.2.5.3.1 GOP Structure

6.2.5.3.1.1

Supported Structure

Support is included for standard IBP GOP structures with between 0 and 3 B

pictures. If H264 ‘Baseline’ profile is selected, no B frames are inserted irrespective

of the GOP structure setting on the UI (since the H264 specification prohibits

B frames in Baseline profile).

6.2.5.3.1.2 GOP Size

The maximum GOP size is configurable with an upper limit of 250.

6.2.5.3.1.3 B/P-Frames

The maximum number of successive B-frames (bidirectional prediction frames) in a

GOP is configurable. It is possib

le to have up to three B-frames successively.

GOPs may be forced to be closed if the appropriate checkbox is selected in the

Video Component Encode tab. Irrespective of this setting, the GOP is always closed

at a segment boundary.

6.2.6 VBI Data on a Separate PID

The SPR1100 supports pass-through of Closed Caption data which is embedded in

the input video stream. This is the only VBI supported.

6.3 SPR1100 Redundancy

6.3.1 Introduction to Redundancy

The following sections describe the possible operating modes, configurations and

network interconnections that may be employed in a redundant system. A

combination of techniques is normally required to create a working system.

The Ericsson SPR1100 is capable of providing:

 Source Redundancy - using input source to protect against source or network

failure and ensure delivery of the Transport Stream. In the event of a source or

2/1553-FGC 101 1400 Uen B

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Ericsson SPR1100 Operations Instructions Page 183