SOLH264TX Broadcast Transmitter
H264TX, H264ENGTX, H264ENC
UNCLASSIFIED
Part A - User Guide
DS000091
Rev 1.2 2013-05-02
UNCLASSIFIED
Page 13-95
13.3
What is an MPEG Transport Stream?
MPEG Transport Stream (MPEG-TS) is a standard format for transmission and storage of
audio, video and Program and System Information Protocol (PSIP) data. It is used in
Broadcast systems such as DVB.
Transport stream specifies a container format encapsulating packetized elementary
streams, with error correction and stream synchronization features for maintaining
transmission integrity when the signal is degraded.
A Transport Stream may carry multiple programs.
13.4
What is a PID?
Each table or elementary stream in a transport stream is identified by a 13-bit packet ID
(PID). A demultiplexer extracts elementary streams from the transport stream in part by
looking for packets identified by the same PID. In most applications, Time-division
multiplexing will be used to decide how often a particular PID appears in the transport
stream.
13.5
About Cobham Default PIDs
Cobham transmitters have a set of Default values for PIDs.
PID
Default Value
PMT
32
Video
300
Audio 1
200
Audio 2
500
RS232 Data
100
CCU Return Data
400
Metadata
600
PCR
8190
Table 13-1 – Cobham Default PIDs